Article
Nanoscience & Nanotechnology
Linkang Li, Jun Li, Zhenzhao Zhang, Zexin Wang, Shengkai Wen, Qiuhong Yang, Jianhua Zhang
Summary: Due to the time-consuming and laborious nature of conventional methods for detecting biological genetic information, it is crucial to study high-performance DNA biosensors. In this study, an aligned Gd-doped In2O3 nanofiber with favorable carrier transport was prepared using electrospinning. The resulting aligned In2O3 nanofiber field-effect transistors (FETs) demonstrated excellent mobility (mu = 8.7 cm2/Vs), suitable threshold voltage (VTH = 0.3 V), large on/off current ratio (Ion/Ioff= 4.1 x 107), and outstanding stability when the Gd doping concentration was 0.5 mol %. The FET biosensor based on one-dimensional nanofibers has a simple structure, fast response, high sensitivity, and great potential for biosensor applications. The current variation in the FET, caused by as low as 10 nM DNA immobilized in the active layer of the aligned In1.995Gd0.005O3 nanofiber FET, becomes more pronounced with higher concentrations of immobilized DNA. The current variation is mainly attributed to the oxidation of guanine nucleotides in the DNA molecular chain. The aligned Gd-doped In2O3 nanofiber FETs exhibit high sensitivity to DNA at room temperature, providing a solution for the development of novel DNA biosensors.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Bo He, Gang He, Li Zhu, Jingbiao Cui, Elvira Fortunato, Rodrigo Martins
Summary: Metal oxide field-effect transistors (MOFETs) and one-dimensional nanofiber networks (NFNs) have great potential in large-area electronics. This study achieved low-temperature processing and impressive device characteristics using electrospun highly aligned IGZO nanofiber arrays. The use of high-k HfAlOx thin films as gate dielectrics further improved the transistor performance.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yizhe Guo, Fan Wu, Guan-Hua Dun, Tianrui Cui, Yanming Liu, Xichao Tan, Yancong Qiao, Mario Lanza, He Tian, Yi Yang, Tian-Ling Ren
Summary: By adjusting the electrospinning parameters and introducing channel surface doping, a tunable plasticity electrospun ZnO nanofiber-based transistor is presented, and the underlying mechanism of the influence of carrier concentration and mobility on the device's electrical and synaptic performance is revealed. This device can tune short-term plasticity behaviors, including paired-pulse facilitation, spike duration-dependent plasticity, and dynamic filtering. Furthermore, Perovskite-doped devices with ultralow energy consumption (~0.2554 fJ) and their application in handwritten recognition demonstrate the great potential of synaptic transistors based on a 1D nanostructure active layer for building next-generation neuromorphic networks.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Yan Wang, Tomoyuki Yokota, Takao Someya
Summary: Electrospun nanofibers have advantages in flexibility, transparency, and conductivity in the field of soft electronics. The structure, properties, and assembly strategies for flexible/stretchable electronic devices utilizing electrospun nanofibers are highlighted. Recent progress includes the design and fabrication of various electronic devices such as conductors, sensors, transistors, and energy harvesting and storage components.
NPG ASIA MATERIALS
(2021)
Article
Chemistry, Physical
Yasmin J. Dias, Suman Sinha-Ray, Behnam Pourdeyhimi, Alexander L. Yarin
Summary: Electrospun Poly (methyl methacrylate) fibrous nonwovens containing Methocel A15 LV were fabricated to accelerate the release of Chicago Sky Blue (CSB) for therapeutic purposes. The release rate and amount of CSB released were affected by various factors, leading to intriguing oscillations and the appearance of a new fluorescence peak.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Electrical & Electronic
Junjie Wang, Yanan Ding, Zhen Wang, Qi Tang, Qian Chen, Guoxia Liu, Fukai Shan
Summary: In this study, In2O3 nanofiber networks were prepared and used to fabricate field-effect transistors (FETs). The effects of plasma treatment on the electrical performance of the FETs based on In2O3 NFNs were investigated, showing that moderate plasma treatment can significantly improve the electrical properties. X-ray photoelectron spectroscopy was employed to analyze the chemical composition, revealing that plasma treatment can tune the electrical behavior of In2O3 nanofibers.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Chemistry, Physical
C. Yogeswari, T. C. Sabari Girisun, R. Nagalakshmi
Summary: The novel 2-Nitroaniline - Poly (methylmethacrylate) electrospun nanofibers exhibit intensity dependent nonlinear absorption transition, with a decrease in the nonlinear absorption coefficient and switch over in the sign indicating a strengthening of saturable absorption and weakening of two photon absorption. The addition of PMMA alters the band structure and leads to strong green and red emission peaks, with potential application in optical switching and power limiting devices.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Polymer Science
Yasemin Acar, Elif Gungor, Mustafa Burak Coban, Fatma Kuru, Hulya Kara Subasat
Summary: A tetrameric Cu(II) Schiff base complex was synthesized and characterized. The complex was doped into PMMA using electrospinning to form Cu@PMMA nanofibers. The nanofibers exhibited blue emission and could be potentially used in solid-state lighting applications.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hai-Yang Liu, Jun Yin, Xiangxiang Gao, Sanchuan Zhao, Gang Bian, Jiaye Li, Chao-Peng Wang, Jian Zhu
Summary: This paper presents an economical nanofabrication technique for manufacturing semiconductor devices with short-channel processing capability, which is compatible with modern semiconductor foundries. The technique combines near-field electrohydrodynamic printing of nanofibers and microscale photolithographic process, allowing for the fabrication of short channels with lengths as small as 48 nm.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Zefei Peng, Wei Shi, Song Chen, Hang Shi, Xueling Yan, Zelin Liu, Linfeng Lan, Miao Xu, Min Li, Lan Liu
Summary: In this study, the illumination instability of one-dimensional metal oxide nanofibers (MO-NFs) based field effect transistors (FETs) was effectively addressed by doping praseodymium (Pr), leading to enhanced illumination stability and excellent electrical performance of the FETs.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Ceramics
Hankun Liu, Huixia Liu, Wei Xu, Hao Wang, Xiao Wang
Summary: In this paper, a method of laser transmission welding on ceramic surface after pulse laser microtexture pretreatment was proposed. It was found that the polymer flows into the micro-texture of the blind hole on the surface to form mechanical riveting to enhance the welding strength. The effects of blind hole microtexture size, continuous laser power, and continuous laser scanning rate on solution flow and welding strength were studied. A 3D finite element model of the transient temperature field and flow field of polymer during laser welding was established.
CERAMICS INTERNATIONAL
(2022)
Article
Polymer Science
Ki-Woong Park, Won-Ju Cho
Summary: A random network of indium-gallium-zinc oxide (IGZO) nanowires was fabricated using electrospun-PVP-nanofiber template transfer. Compared to electrospun IGZO nanofibers, the nanofiber template-transferred IGZO nanowires demonstrated higher transmittance, stronger substrate adhesion, superior electrical performance, and operational reliability and uniformity. The proposed IGZO nanowires fabricated by PVP nanofiber template transfer are expected to overcome the limitations of conventional electrospun IGZO nanofibers.
Article
Engineering, Electrical & Electronic
Chuanyu Fu, Yanan Ding, Yixin Zhu, Zhijie Xin, Guoxia Liu, Fukai Shan
Summary: One-dimensional metal-oxide nanowire networks (NNs) have been fabricated for field-effect transistors (FETs) with different Sn/Ga ratios and welded to improve their electrical performance. The FET based on Sn-0.8 Ga-0.2 O NNs/ZrOx displays high stability and performance, providing a foundation for the development of low-cost, high-performance electronic devices.
IEEE ELECTRON DEVICE LETTERS
(2021)
Review
Materials Science, Multidisciplinary
Kailiang Ren, Yue Shen, Zhong Lin Wang
Summary: This paper reviews the performance of electrospun piezoelectric polymer nanofibers produced by different methods, and describes how these methods affect the piezoelectric properties of the nanofibers.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2023)
Review
Polymer Science
Al Mamun, Tomasz Blachowicz, Lilia Sabantina
Summary: Air pollution is a major global health and environmental issue, leading to significant increases in respiratory allergies each year. Electrospun nanofiber mats, with their unique properties, are the preferred choice for large-scale air filtration applications. The use of biopolymers in filtration applications is relatively new and under-researched, presenting potential for future development.
Article
Chemistry, Multidisciplinary
Weijun Wang, You Meng, Yuxuan Zhang, Zhuomin Zhang, Wei Wang, Zhengxun Lai, Pengshan Xie, Dengji Li, Dong Chen, Quan Quan, Di Yin, Chuntai Liu, Zhengbao Yang, SenPo Yip, Johnny C. Ho
Summary: Atomically 2D layered ferroelectric semiconductor bismuth oxychalcogenides (Bi2O2Se) with a thickness of 7.3 nm and a piezoelectric coefficient (d(33)) of 4.4 +/- 0.1 pm V-1 is investigated. The random orientations and electrically dependent polarization of the dipoles are uncovered, and the interplay between ferroelectricity and semiconducting characteristics in Bi2O2Se is explored on device-level operation, showing hysteresis behavior and memory window formation. Leveraging the ferroelectric polarization, the fabricated device exhibits smart photoresponse tunability and excellent electronic characteristics.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Xiuming Bu, Zhengyi Mao, Yu Bu, Quan Quan, You Meng, Zhengxun Lai, Dong Chen, Pengshan Xie, Hongkun Li, Chuntai Liu, Xianying Wang, SenPo Yip, Jian Lu, Johnny C. Ho
Summary: In this study, shear force alignment in additive manufacturing was used to design NiMo-based structures with anisotropic porous channels as electrocatalysts for hydrogen evolution reaction (HER) in seawater. Both experimental and theoretical investigations were conducted to demonstrate the unique anisotropic structure's ability to fully expose active sites and facilitate rapid electrolyte-hydrogen phase conversion. The obtained 3D electrode showed superior electrocatalytic performance and long-term operational stability in seawater.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
You Meng, Yuxuan Zhang, Zhengxun Lai, Wei Wang, Weijun Wang, Yezhan Li, Dengji Li, Pengshan Xie, Di Yin, Dong Chen, Chuntai Liu, SenPo Yip, Johnny C. Ho
Summary: Converting vapor precursors to solid nanostructures via a liquid noble-metal seed is a common vapor deposition principle. However, such a noble-metal-seeded process is excluded from the crystalline halide perovskite synthesis, mainly hindered by the growth mechanism shortness. In this work, the Au-seeded CsPbI3 nanowires growth is realized based on a vapor-liquid-solid (VLS) growth mode powered by a spontaneous exothermic nucleation process, contributing to outstanding photodetector performances.
Article
Chemistry, Analytical
Kunyu Sun, Zhihao Jiang, Chengmeng Wang, Dongxuan Han, Zhao Yao, Weihua Zong, Zhejun Jin, Shandong Li
Summary: The magnetoelectric (ME) sensor is a new type of magnetic sensor that has ultrahigh sensitivity for measuring low-frequency weak magnetic fields. In this study, a metglas/PZT-5B ME sensor with a mechanical resonance frequency f(res) of 60.041 kHz was prepared. With the use of a frequency up-conversion technique, the sensor achieved a limit of detection (LOD) under an AC magnetic field lower than 1 nT at 8 Hz, and a minimum LOD of 0.51 nT at 20 Hz. The high-resolution ME sensor at the sub-nT level shows great potential in the field of low-frequency weak magnetic field measurement technology.
Article
Chemistry, Physical
Dong Chen, Shaoce Zhang, Di Yin, Wanpeng Li, Xiuming Bu, Quan Quan, Zhengxun Lai, Wei Wang, You Meng, Chuntai Liu, SenPo Yip, Fu-Rong Chen, Chunyi Zhi, Johnny C. C. Ho
Summary: This study reports a method to tailor the interlayer spacing of 2D SnS nanosheets, which enhances the chemical affinity towards NO3- and NO2- while inhibiting hydrogen generation. This promotes the rate-determining step in electrochemical nitrate reduction to ammonia and achieves excellent Faradaic efficiency and yield rate.
ADVANCED ENERGY MATERIALS
(2023)
Article
Physics, Applied
Tongzheng Li, Tongying Xu, Zhengyang Yao, Yanan Ding, Guoxia Liu, Fukai Shan
Summary: In this study, a thin-film transistor (TFT) biosensor based on an indium gallium zinc oxide (IGZO) thin film fabricated by the sol-gel method was proposed for the early detection of Parkinson's disease (PD). The biosensor exhibited high sensitivity and selectivity for a major biomarker of PD, a-Syn, with a sensitivity of 189.9 mV dec(-1) and a coefficient of determination R-2 of 99.7% between 10 pg ml(-1) and 100 ng ml(-1).
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Shilin Lu, Tianchun Nie, Yang Li, Yuanyue Li, Zhao Yao, Nam Young Kim, Shandong Li
Summary: In this study, the sensitivity of a capacitive pressure sensor was improved by optimizing the geometry of the laser-scribed graphene (LSG) electrodes. The sensor demonstrated high sensitivity, fast response/recovery time, low detection limit, and excellent mechanical stability. The research shows the potential of inter-comb structured LSG electrodes in highly sensitive flexible pressure sensors.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Engineering, Electrical & Electronic
Xiaojun Yang, Mengqi Zhang, Mengna Ren, Sui Mao, Rajendra Dhakal, Nam-Young Kim, Yanwei Cao, Yuanyue Li, Zhao Yao
Summary: A microwave biosensor based on a planar low-pass-split ring resonator is proposed for detecting tacrolimus concentrations in solution. The biosensor showed high linearity between resonant frequency and insertion loss with sample concentration for tacrolimus aqueous solution detection. The sensor also exhibited low limit of detection and high frequency detection resolution for tacrolimus in blood samples, demonstrating its feasibility as a label-free biosensing scheme.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Multidisciplinary Sciences
You Meng, Xiaocui Li, Xiaolin Kang, Wanpeng Li, Wei Wang, Zhengxun Lai, Weijun Wang, Quan Quan, Xiuming Bu, SenPo Yip, Pengshan Xie, Dong Chen, Dengji Li, Fei Wang, Chi-Fung Yeung, Changyong Lan, Chuntai Liu, Lifan Shen, Yang Lu, Furong Chen, Chun-Yuen Wong, Johnny C. Ho
Summary: The authors explore the unique multi-scale van der Waals interactions in one-dimensional tellurium systems to overcome the restrictions imposed by chemical bonds. They succeed in synthesizing wafer-scale van der Waals nanomeshes composed of self-welding Te nanowires on various substrates at a low temperature, which exhibit improved transport and photoelectric properties. These Te vdWs nanomesh electronics hold great promise in meeting emerging technological demands.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Zhengxun Lai, Yuxuan Zhang, You Meng, Xiuming Bu, Wei Wang, Pengshan Xie, Weijun Wang, Chuntai Liu, SenPo Yip, Johnny C. Ho
Summary: This study reports a new type of electrode, metalloid electrode, which is more stable than conventional noble metals as electrical contacts for halide perovskites. The degradation mechanism of noble metal electrodes compared to metalloid electrodes is investigated, and it is found that noble metals are prone to halogenation in halide perovskites, while metalloid electrodes remain intact after long-term storage. Furthermore, the long-time operation stability of perovskite devices with metalloid electrodes is higher than that of noble metals. First-principles calculations confirm the exceptional stability of metalloid electrodes.
Article
Chemistry, Physical
Yezhan Li, Zhengxun Lai, You Meng, Wei Wang, Yuxuan Zhang, Xuwen Zhao, Di Yin, Weijun Wang, Pengshan Xie, Quan Quan, SenPo Yip, Johnny C. Ho
Summary: Organic-inorganic halide perovskite is a low-cost and solution-processable material with remarkable optoelectronic properties, making it an ideal candidate for high-performance photodetectors and reduce device costs.
JOURNAL OF MATERIOMICS
(2023)
Article
Chemistry, Multidisciplinary
Zhengxun Lai, Zixin Zeng, You Meng, Yuxuan Zhang, Yi Shen, Wei Wang, Dengji Li, Dong Chen, Di Yin, Sai-Wing Tsang, SenPo Yip, Johnny C. Ho
Summary: A facile slow-evaporating solvent method is demonstrated to synthesize high-quality organic-inorganic halide perovskite films. Compared with the conventional spin-coating method, the films fabricated by this method show higher crystallinity, oriented lattice, smoother surface morphology, and lower trap density. The photodetector manufactured with this method-based film also performs better than those by the spin-coating method.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Physics, Applied
Chengjie Zhou, Wencheng Niu, Lei Li, Dandan Hao, Hao Huang, Houqiang Fu, Xingqiang Liu, Xuming Zou, Fukai Shan, Zhenyu Yang
Summary: In this study, a multifunctional optoelectronic memory was developed by coupling Au nanoparticles with MoS2, enhancing the light absorption capacity of MoS2 and achieving excellent device performance and storage time. Based on this research, a hardware core mimicking human retinal imaging was proposed to enable advances in neuromorphic electronics, particularly in optical information sensing and learning.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Rui Zhang, Zhuojun Yang, Liwen Liu, Jie Lin, Shaofeng Wen, You Meng, Yi Yin, Changyong Lan, Chun Li, Yong Liu, Johnny C. Ho
Summary: This study reports highly sensitive, broadband, and flexible PdSe2 thin film photodetectors on PI substrates that can detect light from UV to infrared regions. The devices with thick PdSe2 films exhibit good performance, with a responsivity of 37.6 mA W-1 at 1550 nm and a fast response time. The thin PdSe2 film shows both positive and negative photoresponses in the infrared region, and the negative photoresponse in the UV to VIS region is attributed to charge transfer-related adsorption-desorption of gas molecules.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Analytical
Xiaojun Yang, Chen Guo, Mengqi Zhang, Yuanyue Li, Mengna Ren, Sui Mao, Rajendra Dhakal, Nam-Young Kim, Zhen Dong, Bin Sun, Zhao Yao
Summary: A anchor planar millifluidic microwave (APMM) biosensor is proposed for detecting drug concentration in tacrolimus solution. The experimental results show that the sensor has an extremely low limit of detection (LoD) and a frequency detection resolution (FDR), establishing a strong linear correlation between tacrolimus concentration and the frequency difference of the two resonant peaks of APMM. Therefore, the proposed biosensor is a potential candidate for early drug concentration detection in organ transplant recipients.
ANALYTICAL METHODS
(2023)
