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Analysis of the characteristics of silver nanowires (AgNW) random network for transparent heater applications Nanotechnology (IF 3.5) Pub Date : 2024-04-23 Thinh-Vuong Duc, Van-Cuong Nguyen and Huyn-Chul Kim
Transparent heaters (THs) find widespread application in various indoor and outdoor settings, such as LCD panels and motorcycle helmet visors. Among the materials used for efficient TH performance, the AgNW network stands out due to its high conductivity, substantial transmittance, and minimal solution requirement. Extensive research has been directed towards enhancing AgNW characteristics, focusing
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Electrochemical synthesis of 2D-silver nanodendrites functionalized with cyclodextrin for SERS-based detection of herbicide MCPA Nanotechnology (IF 3.5) Pub Date : 2024-04-23 Robert Daly, Tarun Narayan, Fernando Diaz, Han Shao, Jose Julio Gutierrez Moreno, Michael Nolan, Alan O’Riordan and Pierre Lovera
Surface enhanced Raman spectroscopy (SERS) is a powerful analytical technique that has found application in the trace detection of a wide range of contaminants. In this paper, we report on the fabrication of 2D silver nanodendrites, on silicon chips, synthesized by electrochemical reduction of AgNO3 at microelectrodes. The formation of nanodendrites is tentatively explained in terms of electromigration
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Self-assembled peptide nanotubes (SPNTs)/SnO2 nanocomposites for high-performance NO2 sensing at room temperature Nanotechnology (IF 3.5) Pub Date : 2024-04-23 Yang Li, Lili Li, Zhihua Ying, Wei Wu, Gaofeng Wang and Ranran Zhang
Nitrogen dioxide (NO2) is a major pollutant that poses significant risks to sustainable human life. As a result, a growing focus has been placed on the development of highly selective and sensitive gas sensors for NO2. Traditional cutting-edge non-organic NO2 gas detectors often necessitate stringent production conditions and potentially harmful materials, which are not environmentally friendly, and
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Functionalized MBenes as promising anode materials for high-performance alkali-ion batteries: a first-principles study Nanotechnology (IF 3.5) Pub Date : 2024-04-23 Sheraz Ahmad, Hu Xu, Letian Chen, H U Din and Zhen Zhou
The discovery of novel electrode materials based on two-dimensional (2D) structures is critical for alkali metal-ion batteries. Herein, we performed first-principles computations to investigate functionalized MXenes, Mo2BT2 (T = O, S), which are also regarded as B-based MXenes, or named as MBenes, as potential anode materials for Li-ion batteries and beyond. The pristine and T-terminated Mo2BT2 (T
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Reference-free x-ray fluorescence analysis with a micrometer-sized incident beam Nanotechnology (IF 3.5) Pub Date : 2024-04-23 Philipp Hönicke, André Wählisch, Rainer Unterumsberger, Burkhard Beckhoff, Janusz Bogdanowicz, Anne-Laure Charley, Hans Mertens, Névine Rochat, Jean-Michel Hartmann and Narciso Giambacorti
Spatially resolved x-ray fluorescence (XRF) based analysis employing incident beam sizes in the low micrometer range (μXRF) is widely used to study lateral composition changes of various types of microstructured samples. However, up to now the quantitative analysis of such experimental datasets could only be realized employing adequate calibration or reference specimen. In this work, we extent the
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Building a cm2 scale CVD graphene-based gas sensor: modelling the kinetic with a three-site adsorption/desorption Langmuir model Nanotechnology (IF 3.5) Pub Date : 2024-04-23 V Malesys, A Andrieux-Ledier, P Lavenus and L Simon
In this article, we aim to develop and study a highly sensitive and selective cm2 scale graphene-based gas sensor. We present the technology used to fabricate sensors which integrate monolayer chemical vapour deposition graphene: photolithography and transfer of layers. Characterization techniques (optical microscopy, AFM, micro-Raman spectroscopy, transport electrical measurements) ensure a diagnosis
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Enhanced oxygen reduction activity of α-MnO2 by NH3 plasma treatment Nanotechnology (IF 3.5) Pub Date : 2024-04-23 Bing Li, Xiang Liu, Yuling Liu, Tianjian Xu, Zhanglong He, Shan Liu, Jianan Xie, Yilong Chen, Xiaohui Ning and Hao He
Oxygen vacancies and heteroatom doping play important role in oxygen reduction activity of metal oxides. Developing efficient modification method is one of the key issues in catalysts research. Room temperature plasma treatment, with the advantages of mild working conditions, no emissions and high efficiency, is a new catalyst modification method developed in recent years. In this work, hydrothermal
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Dynamics of non-Newtonian methanol conveying aluminium alloy over a rotating disc: consideration of variable nanoparticle radius and inter-particle spacing Nanotechnology (IF 3.5) Pub Date : 2024-04-23 E Ragupathi, D Prakash, M Muthtamilselvan and Qasem M Al-Mdallal
The advancement of non-Newtonian nanofluid innovation is a crucial area of research for physicists, mathematicians, manufacturers, and materials scientists. In engineering and industries, the fluid velocity caused by rotating device and nanofluid has a lot of applications such as refrigerators, chips, heat ex-changers, hybrid mechanical motors, food development, and so on. Due to the tremendous usage
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Effects of gamma-ray irradiation on material and electrical properties of AlN gate dielectric on 4H-SiC Nanotechnology (IF 3.5) Pub Date : 2024-04-22 Xiaogang Zhu, Zhanwei Shen, Z J Wang, Zhengran Liu, Yuyang Miao, Shizhong Yue, Zhao Fu, Zihao Li, Yuning Zhang, Rongdun Hong, Shaoxiong Wu, Xiaping Chen, Jiafa Cai, Deyi Fu and Feng Zhang
This article investigates the radiation effects on as-deposited and annealed AlN films on 4H-SiC substrates under gamma-rays. The AlN films are prepared using plasma-enhanced-atomic-layer-deposition on an n-type 4H-SiC substrate. The AlN/4H-SiC MIS structure is subjected to gamma-ray irradiation with total doses of 0, 300, and 600 krad(Si). Physical, chemical, and electrical methods were employed to
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SnO2 QDs sensitized ZnFe2O4 spheres with enhanced acetone sensing performance Nanotechnology (IF 3.5) Pub Date : 2024-04-22 Qiming Yuan, Weichao Li, Zhangcheng Xia, Jingjie Hu, Lifang He, Ling Jin, Liqiang Zhang, Xiangfeng Chu and Kui Zhang
Herein, SnO2 QDs (<10 nm) with small size instead of conventional nanoparticles was employed to modify ZnFe2O4 to synthesize porous and heterogeneous SnO2/ZnFe2O4 (ZFSQ) composites for gas sensing. By an immersion process combined with calcination treatment, the resultant porous ZFSQ composites with different contents of SnO2 QDs were obtained, and their sensing properties were investigated. Compared
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DNA nanostructure decoration: a how-to tutorial Nanotechnology (IF 3.5) Pub Date : 2024-04-22 Luca Piantanida, J Alexander Liddle, William L Hughes and Jacob M Majikes
DNA Nanotechnology is being applied to multiple research fields. The functionality of DNA nanostructures is significantly enhanced by decorating them with nanoscale moieties including: proteins, metallic nanoparticles, quantum dots, and chromophores. Decoration is a complex process and developing protocols for reliable attachment routinely requires extensive trial and error. Additionally, the granular
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Real-time imaging reveal anisotropic dissolution behaviors of silver nanorods Nanotechnology (IF 3.5) Pub Date : 2024-04-22 Meng Dong, Yuchen Pan, Jingfang Zhu, Haiyang Jia, Hui Dong and Feng Xu
The morphology and size control of anisotropic nanocrystals are critical for tuning shape-dependent physicochemical properties. Although the anisotropic dissolution process is considered to be an effective means to precisely control the size and morphology of nanocrystals, the anisotropic dissolution mechanism remains poorly understood. Here, using in situ liquid cell transmission electron microscopy
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Synergistic reduction of nitrophenols by Au-CDs nanoconjugates with NaBH4 Nanotechnology (IF 3.5) Pub Date : 2024-04-22 Eepsita Priyadarshini, Mohd Minzar, Saurabh Pandey and Kamla Rawat
Developing sustainable and innovative approaches for the efficient reduction of nitrophenols is crucial for environmental remediation, for managing health concerns posed by their widespread presence as hazardous pollutants in industrial effluents and contaminated water. We report the use of 12.9 ± 1 nm (TEM data) sized gold carbon dot nanoconjugates (Au@CDs) for catalytic conversion of o, m, p-nitrophenols
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Magnetic tunnel junction random number generators applied to dynamically tuned probability trees driven by spin orbit torque Nanotechnology (IF 3.5) Pub Date : 2024-04-22 Andrew Maicke, Jared Arzate, Samuel Liu, Jaesuk Kwon, J Darby Smith, James B Aimone, Shashank Misra, Catherine Schuman, Suma G Cardwell and Jean Anne C Incorvia
Perpendicular magnetic tunnel junction (pMTJ)-based true-random number generators (RNGs) can consume orders of magnitude less energy per bit than CMOS pseudo-RNGs. Here, we numerically investigate with a macrospin Landau–Lifshitz-Gilbert equation solver the use of pMTJs driven by spin–orbit torque to directly sample numbers from arbitrary probability distributions with the help of a tunable probability
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Gate-bias stability of triple-gated feedback field-effect transistors with silicon nanosheet channels Nanotechnology (IF 3.5) Pub Date : 2024-04-22 Hyojoo Heo, Yunwoo Shin, Jaemin Son, Seungho Ryu, Kyoungah Cho and Sangsig Kim
In this study, we investigate the gate-bias stability of triple-gated feedback field-effect transistors (FBFETs) with Si nanosheet channels. The subthreshold swing (SS) of FBFETs increases from 0.3 mV dec−1 to 60 and 80 mV dec−1 in p- and n-channel modes, respectively, when a positive bias stress (PBS) is applied for 1000 s. In contrast, the SS value does not change even after a negative bias stress
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Advanced three-dimensional hierarchical porous α-MnO2 nanowires network toward enhanced supercapacitive performance Nanotechnology (IF 3.5) Pub Date : 2024-04-21 Xiaohui Su, Zicong Liang, Qingqing He, Yanxin Guo, Gaodan Luo, Shengbo Han and Lin Yu
Hierarchical α-MnO2 nanowires with oxygen vacancies grown on carbon fiber have been synthesized by a simple hydrothermal method with the assistance of Ti4+ ions. Ti4+ ions play an important role in controlling the morphology and crystalline structure of MnO2. The morphology and structure of the as-synthesized MnO2 could be tuned from δ-MnO2 nanosheets to hierarchical α-MnO2 nanowires with the help
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Laser-induced transverse voltage effect in c-axis inclined La x Sr1−x TiO3 thin films prepared by MOCVD Nanotechnology (IF 3.5) Pub Date : 2024-04-19 Tian Xie, Bowan Tao, Ruipeng Zhao, Tong Zhang, Xi Chen, Kai Yang, Zhenzhe Li, Yudong Xia, Hongbo Tian, Guoliang Ming
Light and thermal detectors based on the laser-induced transverse voltage (LITV) effect have garnered significant interest for their rapid and broad spectral response. In this study, we prepared the La-doped SrTiO3 (STO) epitaxial thin films on the 12° inclined single crystal LaAlO3 (LAO) (100) substrates using our home-designed metal–organic chemical vapor deposition system. Under the illumination
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MOF-derived NiCo hydroxide for highly efficient non-enzymatic glucose biosensing Nanotechnology (IF 3.5) Pub Date : 2024-04-19 Shupei Sun, Ping Sun
An efficient and robust electrocatalyst is significant for glucose biosensing. The emergence of metal–organic framework (MOF) derived materials opens up new avenues for the development of high-performance glucose sensing catalysts. Herein, MOF derived nickel-cobalt hydroxide supported on conductive copper sheet (NiCo-OH/Cu sheet) is prepared at room temperature. The as-obtained NiCo-OH is endowed with
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Size-induced exchange bias in single-phase CoO nanoparticles Nanotechnology (IF 3.5) Pub Date : 2024-04-18 Vikash Sharma, Sudip Pal, Divya Sharma, Dinesh Kumar Shukla, Ram Janay Chaudhary, Gunadhor Singh Okram
The tuning of exchange bias (EB) in nanoparticles has garnered significant attention due to its diverse range of applications. Here, we demonstrate EB in single-phase CoO nanoparticles, where two magnetic phases naturally emerge as the crystallite size decreases from 34.6 ± 0.8 to 10.8 ± 0.9 nm. The Néel temperature (T N) associated with antiferromagnetic ordering decreases monotonically with the reduction
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Plasma enhanced atomic layer deposition of silicon nitride using magnetized very high frequency plasma Nanotechnology (IF 3.5) Pub Date : 2024-04-18 You Jin Ji, Hae In Kim, Ji Eun Kang, Seung Yup Choi, Ki Hyun Kim, Doo San Kim, A R Ellingboe, Hye Min Kim, Geun Young Yeom, Dong Woo Kim
To obtain high-quality SiN x films applicable to an extensive range of processes, such as gate spacers in fin field-effect transistors (FinFETs), the self-aligned quadruple patterning process, etc, a study of plasma with higher plasma density and lower plasma damage is crucial in addition to study on novel precursors for SiN x plasma-enhanced atomic layer deposition (PEALD) processes. In this study
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Grating-assisted hot-electron photodetectors for S- and C-band telecommunication Nanotechnology (IF 3.5) Pub Date : 2024-04-15 Weijia Shao, Weihao Cui, Yixiao Xin, Junhui Hu, Xiaofeng Li
Although outstanding detectivities, InGaAs photodetectors for optic fiber communication are often costly due to the need for cooling. Therefore, cryogen-free and cost-effective alternatives working in telecommunication bands are highly desired. Here, we present a design of hot-electron photodetectors (HE PDs) with attributes of room-temperature operation and strong optical absorption over S and C bands
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Innovative synthesis technique for high-performance dielectric resonator antennas: laser-induced shockwave sintering of potassium sodium niobate (KNN) Nanotechnology (IF 3.5) Pub Date : 2024-04-15 Hao Zhang, Yun Hwan Joo, Yue Wang, Tongqiang Yi, Tae Hyun Sung
This study explored the synthesis and sintering of potassium sodium niobate (KNN) nanoparticles, emphasizing morphology, crystal structure, and sintering methods. The as-synthesized KNN nanoparticles exhibited a spherical morphology below 200 nm. Solid state sintering (SSS) and laser-induced shockwave sintering (LISWS) were compared, with LISWS producing denser microstructures and improved grain growth
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Circumventing the ammonia-related growth suppression for obtaining regular GaN nanowires by HVPE Nanotechnology (IF 3.5) Pub Date : 2024-04-12 Elias Semlali, Geoffrey Avit, Yamina André, Evelyne Gil, Andriy Moskalenko, Philip Shields, Vladimir G Dubrovskii, Andrea Cattoni, Jean-Christophe Harmand, Agnès Trassoudaine
Selective area growth by hydride vapor phase epitaxy of GaN nanostructures with different shapes was investigated versus the deposition conditions including temperature and ammonia flux. Growth experiments were carried out on templates of GaN on sapphire masked with SiN x . We discuss two occurrences related to axial and radial growth of GaN nanowires. A growth suppression phenomenon was observed under
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In-plane anisotropic two-dimensional materials for twistronics Nanotechnology (IF 3.5) Pub Date : 2024-04-12 Hangyel Kim, Changheon Kim, Yeonwoong Jung, Namwon Kim, Jangyup Son, Gwan-Hyoung Lee
In-plane anisotropic two-dimensional (2D) materials exhibit in-plane orientation-dependent properties. The anisotropic unit cell causes these materials to show lower symmetry but more diverse physical properties than in-plane isotropic 2D materials. In addition, the artificial stacking of in-plane anisotropic 2D materials can generate new phenomena that cannot be achieved in in-plane isotropic 2D materials
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Exploring the weak visible-near-infrared and NO2 detection capabilities of PbS/Sb2O5 heterostructures with DFT interpretations Nanotechnology (IF 3.5) Pub Date : 2024-04-10 Utkarsh Kumar, Yu-Che Tsou, Zu-Yin Deng, B C Yadav, Wen-Min Huang, Chiu-Hsien Wu
The need for photosensors and gas sensors arises from their pivotal roles in various technological applications, ensuring enhanced efficiency, safety, and functionality in diverse fields. In this paper, interlinked PbS/Sb2O5 thin film has been synthesized by a magnetron sputtering method. We control the temperature to form the nanocomposite by using their different nucleation temperature during the
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Structural and chemical properties of anion exchanged CsPb(Br(1−x)Cl x )3 heterostructured perovskite nanowires imaged by nanofocused x-rays Nanotechnology (IF 3.5) Pub Date : 2024-04-10 L A B Marçal, N Lamers, S Hammarberg, Z Zhang, H Chen, D Dzhigaev, M A Gomez-Gonzalez, J E Parker, A Björling, A Mikkelsen, J Wallentin
Over the last years metal halide perovskites have demonstrated remarkable potential for integration in light emitting devices. Heterostructures allow for tunable bandgap depending on the local anion composition, crucial for optoelectronic devices, but local structural effects of anion exchange in single crystals is not fully understood. Here, we investigate how the anion exchange of CsPbBr3 nanowires
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Induced ferromagnetism in Ni(II) doped ZnO monolayers via Al co-doping and their optical characteristics: ab initio study Nanotechnology (IF 3.5) Pub Date : 2024-04-10 Muhammad Sheraz Khan, Bingsuo Zou, Arfan Bukhtiar, WeiGuo Huang
For applications in magneto-electronic devices, diluted magnetic semiconductors (DMSs) usually exhibit spin-dependent coupling and induced ferromagnetism at high Curie temperatures. The processes behind the behavior of optical emission and ferromagnetism, which can be identified by complicated microstructural and chemical characteristics, are still not well understood. In this study, the impact of
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Quality by design (QbD) approach-based development of optimized nanocarrier to achieve quality target product profile (QTPP)-targeted lymphatic delivery Nanotechnology (IF 3.5) Pub Date : 2024-04-10 Rahul Maurya, Suman Ramteke, Narendra Kumar Jain
Background. Insulin, commonly used for diabetes treatment, needs better ways to improve its effectiveness and safety due to its challenges with poor permeability and stability. Various system has been developed for oral peptide delivery. The non-targeted system can prevent gastric and enzymatic degradation of peptides but cannot increase the bulk transport of peptides across the membrane. However,
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Efficiently tuning the electrical performance of PBTTT-C14 thin film via in situ controllable multiple precursors (Al2O3:ZnO) vapor phase infiltration Nanotechnology (IF 3.5) Pub Date : 2024-04-10 Zhen Jia, Weike Wang, Chuang Ma, Xuelian Zhang, Ruihang Yan, Jiankang Zhu
Conjugated polymer-based organic/inorganic hybrid materials become the current research frontier and show great potential to integrate flexible polymers and rigid solid materials, which have been widely used in the field of various flexible electronics and optical devices. In this study, based on the multiple vapor phase infiltration (VPI) process, various precursor molecules (diethylzinc DEZ, trimethylaluminum
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Integration of statistical and simulation analyses for ternary hybrid nanofluid over a moving surface with melting heat transfer Nanotechnology (IF 3.5) Pub Date : 2024-04-09 Aqeel ur Rehman, Zaheer Abbas, Zawar Hussain, Jafar Hasnain, Mir Asma
In industrial and engineering fields including lamination, melt-spinning, continuous casting, and fiber spinning, the flow caused by a continually moving surface is significant. Therefore, the problem of ternary hybrid nanofluid flow over a moving surface is studied. This study explores the stability and statistical analyses of the magnetohydrodynamics (MHD) forced flow of the ternary hybrid nanofluid
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Probe chip nanofabrication enabled reverse tip sample scanning probe microscopy concept and measurements Nanotechnology (IF 3.5) Pub Date : 2024-04-09 Hyeon-Su Kim, Nemanja Peric, Albert Minj, Lennaert Wouters, Jill Serron, Chiara Mancini, Serkan Koylan, Stefanie Sergeant, Thomas Hantschel
We introduce a new scanning probe microscopy (SPM) concept called reverse tip sample scanning probe microscopy (RTS SPM), where the tip and sample positions are reversed as compared to traditional SPM. The main benefit of RTS SPM over the standard SPM configuration is that it allows for simple and fast tip changes. This overcomes two major limitations of SPM which are slow data acquisition and a strong
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Transient N-GQDs/PVA nanocomposite thin film for memristor application Nanotechnology (IF 3.5) Pub Date : 2024-04-09 Akshaya Pisal Deshmukh, Kalyanee Patil, Kanchan Barve, Tejashree Bhave
In recent years quantum dot (QDs) based resistive switching devices(memristors) have gained a lot of attention. Here we report the resistive switching behavior of nitrogen-doped graphene quantum dots/Polyvinyl alcohol (N-GQDs/PVA) degradable nanocomposite thin film with different weight percentages (wt.%) of N-GQDs. The memristor device was fabricated by a simple spin coating technique. It was found
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Design and tribological performance of graphene nanofluids dispersed by dragging effect of bicomponent gelator Nanotechnology (IF 3.5) Pub Date : 2024-04-09 Ruochong Zhang, Zhuoli Ding, Haojie Zhang, Yu Xia, Minghuan Wang, Xiaodong Hu, Xuefeng Xu, Yongzhen Zhang
Nanofluids have excellent lubrication and high thermal conductivity. However, the agglomeration and sedimentation produced by the large surface energy of nanoparticles in base liquid threaten the long-term dispersion stability and impact the wide application of nanofluid. In this work, based on the self-assemble behavior and continuous network structure formed by low molecular weight organic gelator
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Synthesis of silicon carbide in a matrix of graphite-like carbon prepared via carbonization of rigid-rod polyimide Langmuir–Blodgett films on silicon substrate Nanotechnology (IF 3.5) Pub Date : 2024-04-09 Svetlana Goloudina, Vyacheslav Pasyuta, Demid Kirilenko, Aleksandr Smirnov, Igor Kasatkin, Evgeny Zhizhin, Aleksandra Koroleva, Evgeny Sevostiyanov, Mikhail Panov, Valentina Trushlyakova, Iosif Gofman, Valentin Svetlichnyi, Viktor Luchinin
Silicon carbide (SiC) is a wide-band gap semiconductor that exceeds other semiconducting materials (except diamond) in electrical, mechanical, chemical, and radiation stability. In this paper, we report a novel approach to fabrication of SiC nano films on a Si substrate, which is based on the endotaxial growth of a SiC crystalline phase in a graphite-like carbon (GLC) matrix. GLC films were formed
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Green synthesized Cu-doped CeO2 nanoparticles for Congo red dye adsorption and antibacterial action Nanotechnology (IF 3.5) Pub Date : 2024-04-09 Aleena Norbert, Surya Mary A, Sareen Sarah John, Sadasivan Shaji, Mohan V Jacob, Rachel Reena Philip
The removal of pollutants from water bodies is crucial for the well-being of humanity and is a topic of global research. Researchers have turned their attention to green synthesized nanoparticles for wastewater treatment due to their eco-friendly nature, biocompatibility, and cost-effectiveness. This work demonstrates the efficient removal of organic dye and both gram-positive and gram-negative bacteria
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Formation-free resistive switching in nanocrystalline tellurium oxide Nanotechnology (IF 3.5) Pub Date : 2024-04-09 0000-0003-1558-9818Keerthana1keerthanavenu@gmail.com, Adyam Venimadhav
In this work, we report on the observation of resistive switching (RS) in the nanocrystalline tellurium oxide (TeO x ) in ITO/TeO x /Ag device configuration. The TeO x films grown in an O2/Ar environment have dominant β-TeO2 along with other polymorphs and amorphous TeO2. From the RS characteristics, it is suggestive that the β-TeO2 phase promotes the conductive filament formation across the highly
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Enhancing piezoelectric performance of CNTs through B and N substitution under combined mechanical loads: insights from MD simulations Nanotechnology (IF 3.5) Pub Date : 2024-04-09 Nitin Luhadiya, S I Kundalwal
The piezoelectric properties of carbon nanotubes (CNTs) doped with boron (B) and nitrogen (N) were studied using the classical molecular dynamics (MD) simulation software package large scale atomic/molecular massively parallel simulator. The interactions among the nanotube atoms C, N, and B were calculated using the Tersoff potential. MD simulations were performed to observe the changes in the piezoelectric
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UV photodetectors based on W-doped ZnO thin films Nanotechnology (IF 3.5) Pub Date : 2024-04-09 R Jalal, K Ozel, A Atilgan, A Yildiz
W-doped ZnO thin films deposited on Si substrates with (100) orientation by sol–gel spin coating method at temperature 500 °C. W/Zn atomic ratio varies from 0% to 4%. Then, the UV detection performance analysis of p–n heterojunction UV photodetectors based on W-doped ZnO/Si is analyzed. The current–voltage curves of W-doped ZnO/Si are investigated in dark and exhibit diode-like rectifying behavior
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Nano antenna-assisted quantum dots emission into high-index planar waveguide Nanotechnology (IF 3.5) Pub Date : 2024-04-09 X Yu, J-C Weeber, L Markey, J Arocas, A Bouhelier, A Leray, G Colas des Francs
Integrated quantum photonic circuits require the efficient coupling of photon sources to photonic waveguides. Hybrid plasmonic/photonic platforms are a promising approach, taking advantage of both plasmon modal confinement for efficient coupling to a nearby emitter and photonic circuitry for optical data transfer and processing. In this work, we established directional quantum dot (QD) emission coupling
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Biosynthesis and antibacterial activity of ZnO nanoparticles using Buchanania obovata fruit extract and the eutectic-based ionic liquid Nanotechnology (IF 3.5) Pub Date : 2024-04-09 Kadhim Qasim Jabbar, Azeez Abdullah Barzinjy
The fruit extract of Buchanania obovata and the eutectic-based ionic liquid were utilized, in an eco-friendly, inexpensive, simple method, for synthesizing zinc oxide nanoparticles (ZnO NPs). The influence of the reducing, capping and stabilizing agents, in both mediums, on the structure, optical, and morphological properties of ZnO NPs was extensively investigated. The surface plasmon resonance peaks
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A study on the high power microwave effects of PIN diode limiter based on deep learning algorithm Nanotechnology (IF 3.5) Pub Date : 2024-04-09 Huikai Chen, Wenze Gao, Yinfen Zhao, Shulong Wang, Xingyuan Yan, Hao Zhou, Shupeng Chen, Hongxia Liu
PIN diodes, due to their simple structure and variable resistance characteristics under high-frequency high-power excitation, are often used in radar front-end as limiters to filter high power microwaves (HPM) to prevent its power from entering the internal circuit and causing damage. This paper carries out theoretical derivation and research on the HPM effects of PIN diodes, and then uses an optimized
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Activation of polyimide by oxygen plasma for atomic layer deposition of highly compact titanium oxide coating Nanotechnology (IF 3.5) Pub Date : 2024-04-09 Chi Yan, Hua Tong, Cui Liu, Xiaojun Ye, Xiao Yuan, Jiahui Xu, Hongbo Li
Titanium oxide (TiO2) coated polyimide has broad application prospects under extreme conditions. In order to obtain a high-quality ultra-thin TiO2 coating on polyimide by atomic layer deposition (ALD), the polyimide was activated by in situ oxygen plasma. It was found that a large number of polar oxygen functional groups, such as carboxyl, were generated on the surface of the activated polyimide, which
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Composition and optical properties of (In, Ga)As nanowires grown by group-III-assisted molecular beam epitaxy Nanotechnology (IF 3.5) Pub Date : 2024-04-09 M Gómez Ruiz, A Castro, J Herranz, A da Silva, P John, A Trampert, O Brandt, L Geelhaar, J Lähnemann
(In, Ga) alloy droplets are used to catalyse the growth of (In, Ga)As nanowires by molecular beam epitaxy on Si(111) substrates. The composition, morphology and optical properties of these nanowires can be tuned by the employed elemental fluxes. To incorporate more than 10% of In, a high In/(In+Ga) flux ratio above 0.7 is required. We report a maximum In content of almost 30% in bulk (In, Ga)As nanowires
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A novel sonoelectrochemical approach for preparing of ZnO nanoparticles Nanotechnology (IF 3.5) Pub Date : 2024-04-09 Pham Huong Quynh, Hoang Minh Trang, Nguyen Thanh Trung, Nguyen Nang Dinh, Dang Van Thanh, Le Phuoc Anh, Nguyen Thi Luyen, Nguyen Thi Khanh Van
A novel, rapid, and facile method for one-step sonoelectrochemical synthesis of zinc oxide nanoparticles (UEZ) was introduced in this study. The optimum operating parameters have been selected at a voltage of 7.5 V, KCl concentration of 0.5 M, and the reaction time of 60 min. The as-prepared UEZ were characterized by XRD, SEM, and HRTEM. It was found that the UEZ has a hexagonal wurtzite structure
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Thermal scanning probe and laser lithography for patterning nanowire based quantum devices Nanotechnology (IF 3.5) Pub Date : 2024-04-04 Lior Shani, Jana Chaaban, Alec Nilson, Eliott Clerc, Gavin Menning, Colin Riggert, Pim Lueb, Marco Rossi, Ghada Badawy, Erik P A M Bakkers, Vlad S Pribiag
Semiconductor nanowire (NW) quantum devices offer a promising path for the pursuit and investigation of topologically-protected quantum states, and superconducting and spin-based qubits that can be controlled using electric fields. Theoretical investigations into the impact of disorder on the attainment of dependable topological states in semiconducting nanowires with large spin–orbit coupling and
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Cathodoluminescence investigations of dark-line defects in platelet-based InGaN nano-LED structures Nanotechnology (IF 3.5) Pub Date : 2024-04-04 Anders Gustafsson, Axel R Persson, Per O Å Persson, Vanya Darakchieva, Zhaoxia Bi, Lars Samuelson
We have investigated the optical properties of heterostructured InGaN platelets aiming at red emission, intended for use as nano-scaled light-emitting diodes. The focus is on the presence of non-radiative emission in the form of dark line defects. We have performed the study using hyperspectral cathodoluminescence imaging. The platelets were grown on a template consisting of InGaN pyramids, flattened
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Fabrication of SU-8 polymer micro/nanoscale nozzle by hot embossing method Nanotechnology (IF 3.5) Pub Date : 2024-04-04 Ran Guo, Gaige Yan, Weilong Niu, Xuan Li
Electrohydrodynamic-jet printing (E-jet printing) is a direct-writing technology for manufacturing micro-nano devices. To further reduce the inner diameter of the nozzle to improve the printing resolution, a large-scale manufacturing method of SU-8 polymer micro/nanoscale nozzle by means of a process combining UV exposure and hot embossing was proposed. To improve the adhesive strength between the
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Flower like-novel nanocomposite of Mg(Ti0.99Sn0.01)O3 decorated on reduced graphene oxide (rGO) with high capacitive behavior as supercapacitor electrodes Nanotechnology (IF 3.5) Pub Date : 2024-04-03 Syadza Aisyah Hermadianti, Murni Handayani, Muhammad Aulia Anggoro, Desinta Dwi Ristiana, Isa Anshori, Agung Esmawan, Yosephin Dewiani Rahmayanti, Andi Suhandi, Gerald Ensang Timuda, Gagus Ketut Sunnardianto, Bambang Wisnu Widagdo, Frida Ulfah Ermawati
In this study, ceramic materials of Mg(Ti0.99Sn0.01)O3 were synthesized and decorated on reduced graphene oxide, forming a nanocomposite of rGO/Mg(Ti0.99Sn0.01)O3 (rGO/MTS001). The successful synthesis results were confirmed by XRD, UV–vis analysis, FT-IR, and SEM-EDS. The MTS001 has a flower-like morphology from scanning electron microscopy (SEM) analysis, and the nanocomposites of rGO/MTS001 showed
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The effects of nontoxic bio-based substances (egg white) on the performance and passivation of ZnO nanorods arrays-based light emitting devices Nanotechnology (IF 3.5) Pub Date : 2024-04-03 Sung-Hao Chuang, Denice Navat Feria, Yan-Shawn Lo, Tung-Han Hsieh, Tai-Yuan Lin
An innovative approach is proposed to passivate the existing defects from metal oxide semiconductors by functionalizing nontoxic bio-based substances. As a demonstration, we synthesized zinc oxide nanorods (ZnO NRs) using a hydrothermal method and incorporated chicken egg white (albumen) as a passivator to the defects. X-ray diffraction analysis of ZnO NRs shows enhanced quality and crystallinity features
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NiCo2O4@SnS2 nanosheets on carbon cloth as efficient bi-functional material for high performance supercapacitor and sensor applications Nanotechnology (IF 3.5) Pub Date : 2024-04-03 Maria Bibi, Yanlong Yu, Amjad Nisar, Amina Zafar, Yanguo Liu, Shafqat Karim, Sheeraz Mehboob, Yasir Faiz, Hongyu Sun, Tahir Ali, Atia Khalid, Amna Safdar, Faisal Faiz, Mashkoor Ahmad
Bi-functional materials provide an opportunity for the development of high-performance devices. Up till now, bi-functional performance of NiCo2O4@SnS2 nanosheets is rarely investigated. In this work, NiCo2O4@SnS2 nanosheets were synthesized on carbon cloth by utilizing a simple hydrothermal technique. The developed electrode (NiCo2O4@SnS2/CC) was investigated for the detection of L-Cysteine and supercapacitors
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Novel silicene-mesoporous silica nanoparticles conjugated gemcitabine induced cellular apoptosis via upregulating NF-κB p65 nuclear translocation suppresses pancreatic cancer growth in vitro and in vivo Nanotechnology (IF 3.5) Pub Date : 2024-04-03 Yuhang Chen, Chien-Shan Cheng, Peiwen Yang, Shu Dong, Lianyu Chen
Pancreatic cancer’s high fatality rates stem from its resistance to systemic drug delivery and aggressive metastasis, limiting the efficacy of conventional treatments. In this study, two-dimensional ultrathin silicene nanosheets were initially synthesized and near-infrared-responsive two-dimensional silicene-mesoporous silica nanoparticles (SMSNs) were successfully constructed to load the clinically-approved
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Disentangling the intrinsic relaxivities of highly purified graphene oxide Nanotechnology (IF 3.5) Pub Date : 2024-04-03 Giulia Fioravanti, Angelo Galante, Paola Fattibene, Laura Torrieri Di Tullio, Silvia Colacicchi, Giorgio De Thomasis, Francesco Perrozzi, Niccolò De Berardinis, Gianni Profeta, Luca Ottaviano, Marcello Alecci
The chemistry of contrast agents (CAs) for magnetic resonance imaging (MRI) applications is an active area of research and, in recent work, it was shown that CA-based graphene oxide (GO) has valuable properties for biomedical uses. GO has a potential as MRI CAs thanks to several functionalities, like its ability to penetrate tissues and cell membranes, as well as easy coupling with therapeutic agents
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Self-healing flexible strain sensor fabricated through 3D printing template sacrifice for motion monitoring with enhanced healing and mechanical performance Nanotechnology (IF 3.5) Pub Date : 2024-04-02 Hui Yan, Shuofu Liu, Nan Wen, Jiyuan Yin, Hongyuan Jiang
With the advancements in flexible materials and information technology, flexible sensors are becoming increasingly pervasive in various aspects of life and production. They hold immense potential for further development in areas such as motion detection, electronic skin, soft robots, and wearable devices. Aminopropyl-terminated polydimethylsiloxane (PDMS) was used as the raw material, while a diisocyanate
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High-performance, large-area flexible SERS substrates prepared by reactive ion etching for molecular detection Nanotechnology (IF 3.5) Pub Date : 2024-04-02 Xing Yang, Pei Zeng, Yuting Zhou, Qingyu Wang, Jiankun Zuo, Huigao Duan, Yueqiang Hu
In the realm of molecular detection, the surface-enhanced Raman scattering (SERS) technique has garnered increasing attention due to its rapid detection, high sensitivity, and non-destructive characteristics. However, conventional rigid SERS substrates are either costly to fabricate and challenging to prepare over a large area, or they exhibit poor uniformity and repeatability, making them unsuitable
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Surface termination modulation for superior S-Scheme Bi2WO6/BiOI heterojunction photocatalyst: a hybrid density functional study Nanotechnology (IF 3.5) Pub Date : 2024-04-02 Hongwei Nie, Zuoyin Liu, Bo Kong, Xiang Xu, Wentao Wang
The prevailing theoretical frameworks indicate that depending on the growth conditions, the Bi2WO6(001) surface can manifest in three distinct terminations—DL-O–Bi (DL: double layers), O–Bi, and O–W. In this study, we conduct a comprehensive examination of the interplay between these terminations on Bi2WO6(001) and the 1I-terminated BiOI(001) facet, especially focusing on their impact on the photocatalytic
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Photocatalytic activity enhancement of nanostructured metal-oxides photocatalyst: a review Nanotechnology (IF 3.5) Pub Date : 2024-04-02 Aini Ayunni Mohd Raub, Raihana Bahru, Mohd Ambri Mohamed, Rhonira Latif, Muhammad Aniq Shazni Mohammad Haniff, Khanom Simarani, Jumril Yunas
Nanostructured metal oxide semiconductors have emerged as promising nanoscale photocatalysts due to their excellent photosensitivity, chemical stability, non-toxicity, and biocompatibility. Enhancing the photocatalytic activity of metal oxide is critical in improving their efficiency in radical ion production upon optical exposure for various applications. Therefore, this review paper provides an in-depth
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Efficient degradation of organics by ultrasonic piezoelectric effect on CuO-BTO/AFC composite Nanotechnology (IF 3.5) Pub Date : 2024-03-27 Haoyang Feng, Zhi Zhang, Hongxiang Deng, Sean Li, Xiaotao Zu, Zongwei Mei
The recombination of photoexcited electron–hole pairs greatly limits the degradation performance of photocatalysts. Ultrasonic cavitation and internal electric field induced by the piezoelectric effect are helpful for the separation of electron–hole pairs and degradation efficiency. The activated foam carbon (AFC) owing to its high surface area is often used as the substrate to grow catalysts to provide
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Excitation-wavelength-dependent photoluminescence in GaAs nanowires under high-pressure Nanotechnology (IF 3.5) Pub Date : 2024-03-27 Xuetong Yin, Yilan Liang, Lixia Li, Shuang Liu, Dong Pan, Peng Wang
GaAs nanowires (NWs) have wide application potential as near-infrared optical devices and the high-pressure strategy has been applied to modulate their crystal and electronic structures. As another typical thermodynamic parameter, temperature can also affect the optical performance of semiconductors. Here we report the excitation-wavelength-dependent photoluminescence (EWDP) in GaAs NWs under high-pressure
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Facile and cost-effective fabrication of wearable alpha-naphtholphthalein-based halochromic sensor for wound pH monitoring Nanotechnology (IF 3.5) Pub Date : 2024-03-27 Hee Sung Seo, Hyejin Lim, Taekyung Lim, Keumyoung Seo, Jonguk Yang, Youngsoo Kang, Shin Ji Han, Sanghyun Ju, Sang-Mi Jeong
The sensor, designed to be worn directly on the skin, is suitable for real-time monitoring of the recovery level of not only general wounds, but also difficult-to-heal wounds, such as those with chronic inflammation. Notably, healthy skin has a pH range of 4–6. When a wound occurs, the pH is known to be approximately 7.4. In this study, alpha-naphtholphthalein (Naph) was immersed in a cotton-blended
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Ionic liquid modified PVDF/BCZT nanocomposites for space charge induced mechanical energy harvesting performance Nanotechnology (IF 3.5) Pub Date : 2024-03-27 Payel Maiti, Abhishek Sasmal, A Arockiarajan, Rahul Mitra
Mechanical energy harvesting performances of poly(vinylidene fluoride) (PVDF) based composites are most often correlated with their polar phase and the individual piezoelectricity of the used filler materials. Here we show that the significant enhancement of space charge polarization of the said composites can play the key dominant role in determining their mechanical energy harvesting performance