keyword
https://read.qxmd.com/read/38501958/design-of-aluminum-doped-zno-phenyl-c-butyric-acid-methyl-ester-tungsten-disulfide-azo-pcbm-ws-2-heterojunction-based-device-for-applications-in-solar-cells-and-broadband-self-powered-photodetectors
#21
JOURNAL ARTICLE
Rupam Sinha
The domain related to the use of renewable energy is showing high interest among the researchers in the current days, and light energy can be considered as one of such. Solar cells are the kind of devices that use light energy in an efficient way to generate electricity. Hence, designing and developing a solar cell requires meticulous attention to get an optimum output. This work focuses on designing and optimization of aluminum dope ZnO/phenyl-C-butyric acid methyl ester/tungsten disulfide (AZO/PCBM/WS2 ) heterojunction-based device for applications in solar cells...
March 19, 2024: Langmuir: the ACS Journal of Surfaces and Colloids
https://read.qxmd.com/read/38501216/rational-ligand-design-for-enhanced-carrier-mobility-in-self-powered-swir-photodiodes-based-on-colloidal-insb-quantum-dots
#22
JOURNAL ARTICLE
Subhashri Chatterjee, Kazuhiro Nemoto, Hong-Tao Sun, Naoto Shirahata
Solution-processed colloidal III-V semiconductor quantum dot photodiodes (QPDs) have potential applications in short-wavelength infrared (SWIR) imaging due to their tunable spectral response range, possible multiple-exciton generation, operation at 0-V bias voltage and low-cost fabrication and are also expected to replace lead- and mercury-based counterparts that are hampered by reliance on restricted elements (RoHS). However, the use of III-V CQDs as photoactive layers in SWIR optoelectronic applications is still a challenge because of underdeveloped ligand engineering for improving the in-plane conductivity of the QD assembled films...
March 19, 2024: Nanoscale Horizons: the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy
https://read.qxmd.com/read/38499422/portable-self-powered-electrochemical-aptasensing-platform-for-ratiometric-detection-of-mycotoxins-based-on-multichannel-photofuel-cell
#23
JOURNAL ARTICLE
Kai Yan, Yifan Ding, Xuqiao Liu, Jianqiao Liu, Jingdong Zhang
Self-powered electrochemical sensors based on photofuel cells have attracted considerable research interest because their unique advantage of not requiring an external electric source, but their application in portable and multiplexed targets assay is limited by the inherent mechanism. In this work, a portable self-powered sensor constructed with multichannel photofuel cells was developed for the ratiometric detection of mycotoxins, namely ochratoxin A (OTA) and patulin (PAT). The spatially resolved CdS/Bi2 S3 -modified photoanodes and a shared Prussian Blue cathode were integrated on an etched indium-tin oxide slide to fabricate the multichannel photofuel cell...
April 22, 2024: Analytica Chimica Acta
https://read.qxmd.com/read/38498923/high-strength-and-toughness-polymeric-triboelectric-materials-enabled-by-dense-crystal-domain-cross-linking
#24
JOURNAL ARTICLE
Chenchen Cai, Xiangjiang Meng, Lixin Zhang, Bin Luo, Yanhua Liu, Tao Liu, Song Zhang, Jinlong Wang, Mingchao Chi, Cong Gao, Yayu Bai, Shuangfei Wang, Shuangxi Nie
Lightweight, easily processed, and durable polymeric materials play a crucial role in wearable sensor devices. However, achieving simultaneously high strength and toughness remains a challenge. This study addresses this by utilizing an ion-specific effect to control crystalline domains, enabling the fabrication of a polymeric triboelectric material with tunable mechanical properties. The dense crystal-domain cross-linking enhances energy dissipation, resulting in a material boasting both high tensile strength (58...
March 18, 2024: Nano Letters
https://read.qxmd.com/read/38497757/supramolecular-modulation-of-fluid-flow-in-a-self-powered-enzyme-micropump
#25
JOURNAL ARTICLE
Chinmayee Agashe, Akshay Saroha, Sarit S Agasti, Debabrata Patra
Regulating macroscopic fluid flow by catalytic harnessing of chemical energy could potentially provide a solution for powerless microfluidic devices. Earlier reports have shown that surface-anchored enzymes can actuate the surrounding fluid in the presence of the respective substrate in a concentration-dependent manner. It is also crucial to have control over the flow speed of a self-powered enzyme micropump in various applications where controlled dosing and mixing are required. However, modulating the flow speed independent of the fuel concentration remains a significant challenge...
March 18, 2024: Langmuir: the ACS Journal of Surfaces and Colloids
https://read.qxmd.com/read/38497667/intercorrelated-ferroelectricity-and-bulk-photovoltaic-effect-in-two-dimensional-sn-2-p-2-s-6-semiconductor-for-polarization-sensitive-photodetection
#26
JOURNAL ARTICLE
Dong Li, Jing-Kai Qin, Bingxuan Zhu, Ling-Qing Yue, Pei-Yu Huang, Chengyi Zhu, Feichi Zhou, Liang Zhen, Cheng-Yan Xu
A two-dimensional (2D) ferroelectric semiconductor, which is coupled with photosensitivity and room-temperature ferroelectricity, provides the possibility of coordinated conductance modulation by both electric field and light illumination and is promising for triggering the revolution of optoelectronics for monolithic multifunctional integration. Here, we report that semiconducting Sn2 P2 S6 crystals can be achieved in a 2D morphology using a chemical vapor transport approach with the assistant of space confinement and experimentally demonstrate the robust ferroelectricity in atomic-thin Sn2 P2 S6 nanosheet at room temperature...
March 18, 2024: ACS Nano
https://read.qxmd.com/read/38497487/enhancing-the-output-performance-of-triboelectric-nanogenerator-through-regulation-of-its-internal-nano-architecture
#27
JOURNAL ARTICLE
Jiawei Li, Yating Peng, Peng Wang, Congyu Wang, Jun Zhang, Tengfei Xiang, Shengxun Yao, Dun Zhang
Triboelectric Nanogenerator (TENG) has proven highly effective in converting mechanical energy into electrical energy. Previous research on manipulating microstructure for performance enhancement primarily focused on the surface of TENGs. In this study, an innovative bottom-up strategic design to control the internal nano-architecture for the enhanced output of TENG is proposed. This multiscale structural design strategy consists of defect chemistry (angstrom-scale), surface modification (nano-scale), and spatial regulation of nanoparticles (meso-scale), which helps explore the optimal utilization of TENG's internal structure...
March 18, 2024: Small
https://read.qxmd.com/read/38497196/tuning-germanane-band-gaps-via-cyanoethyl-functionalization-for-cutting-edge-photoactive-cathodes-photoenhanced-hybrid-zinc-ion-capacitor-evaluation
#28
JOURNAL ARTICLE
Jalal Azadmanjiri, Jiri Sturala, Jakub Regner, Filipa M Oliveira, Vlastimil Mazánek, Zdeněk Sofer
Energy harvesting and storing by dual-functional photoenhanced (photo-E) energy storage devices are being developed to battle the current energy hassles. In this research work, our investigations on the photoinduced efficiency of germanane (Ge-H) and its functionalized analogue cyanoethyl (Ge-C2 -CN) are assessed as photocathodes in photo-E hybrid zinc-ion capacitors (ZICs). The evaluated self-powered photodetector devices made by these germanene-based samples revealed effective performances in photogenerated electrons and holes...
March 18, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38494218/dual-network-carboxymethyl-chitosan-conductive-hydrogels-for-multifunctional-sensors-and-high-performance-triboelectric-nanogenerators
#29
JOURNAL ARTICLE
Ting Xie, Fangyan Ou, Chuang Ning, Liang Tuo, Zhichao Zhang, Yi Gao, Wenyu Pan, Zequan Li, Wei Gao
With the development of technology, there is a growing demand for wearable electronics that can fulfill different application scenarios. Hydrogel-based sensors are considered ideal candidates for realizing multifunctional wearable flexible devices. However, there are great challenges in preparing hydrogel-based sensors with both superior mechanical and electrical properties. Herein, we report a composite conductive hydrogel prepared by using a dynamically crosslinked carboxymethyl chitosan network and a covalently crosslinked polymer network, and carboxylated carbon nanotubes as conductive filler...
June 1, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38493655/ultrahigh-sensitive-and-rapid-response-self-powered-flexible-pressure-sensor-based-on-sandwiched-piezoelectric-composites
#30
JOURNAL ARTICLE
Chuan Cao, Peng Zhou, Jianqiao Wang, Miaoxuan Liu, Peng Wang, Yajun Qi, Tianjin Zhang
Flexible sensors and actuators are the basis for realizing the Internet of Everything. This study identifies specific interfacial polarization and filler dispersion challenges in flexible sensors. A novel sandwich-structured flexible sensor with polydimethylsiloxane (PDMS)-filled Nb2 CTx as the interlayer and poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)]-filled barium titanate (BTO) as the upper and lower layers was designed and fabricated. The thickness of the interlayer was optimized to be 6.2 μm, resulting in an ultrahigh sensitivity of 16...
March 15, 2024: Journal of Colloid and Interface Science
https://read.qxmd.com/read/38489669/multistrand-twisted-triboelectric-kevlar-yarns-for-harvesting-high-impact-energy-body-injury-location-and-levels-evaluation
#31
JOURNAL ARTICLE
Fangjing Xing, Xiaobo Gao, Jing Wen, Hao Li, Hui Liu, Zhong Lin Wang, Baodong Chen
Developing ultrahigh-strength fabric-based triboelectric nanogenerators for harvesting high-impact energy and sensing biomechanical signals is still a great challenge. Here, the constraints are addressed by design of a multistrand twisted triboelectric Kevlar (MTTK) yarn using conductive and non-conductive Kevlar fibers. Manufactured using a multistrand twisting process, the MTTK yarn offers superior tensile strength (372 MPa), compared to current triboelectric yarns. In addition, a self-powered impact sensing fabric patch (SP-ISFP) comprising signal acquisition, processing, communication circuit, and MTTK yarns is integrated...
March 15, 2024: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://read.qxmd.com/read/38482962/two-dimensional-topological-semimetals-an-emerging-candidate-for-terahertz-detectors-and-on-chip-integration
#32
REVIEW
Yun Li, Wenzhi Yu, Kai Zhang, Nan Cui, Tinghe Yun, Xue Xia, Yan Jiang, Guangyu Zhang, Haoran Mu, Shenghuang Lin
The importance of terahertz (THz) detection lies in its ability to provide detailed information in a non-destructive manner, making it a valuable tool across various domains including spectroscopy, communication, and security. The ongoing development of THz detectors aims to enhance their sensitivity, resolution and integration into compact and portable devices such as handheld scanners or integrated communication chips. Generally, two-dimensional (2D) materials are considered potential candidates for device miniaturization but detecting THz radiation using 2D semiconductors is generally difficult due to the ultra-small photon energy...
March 14, 2024: Materials Horizons
https://read.qxmd.com/read/38481340/multifunctional-polyoxometalates-based-ionohydrogels-towards-flexible-electronics
#33
JOURNAL ARTICLE
Zhi-Da Wang, Kai Bo, Chen-Long Zhong, Yu-Hang Xin, Guo-Long Lu, Hang Sun, Song Liang, Zhen-Ning Liu, Hong-Ying Zang
Multifunctional flexible electronics present tremendous opportunities in the rapidly evolving digital age. One potential avenue to realize this goal is the integration of polyoxometalates (POMs) and ionic liquid-based gels, but the challenge of macrophase-separation due to poor compatibility, especially caused by repulsion between like-charged units, poses a significant hurdle. Herein, we vastly expand the possibilities of producing diverse and homogenous POMs-containing ionohydrogels by nanoconfining POMs and ionic liquids within an elastomer-like polyzwitterionic hydrogel using a simple one-step random copolymerization method...
March 14, 2024: Advanced Materials
https://read.qxmd.com/read/38477429/nanowire-array-breath-acetone-sensor-for-diabetes-monitoring
#34
JOURNAL ARTICLE
Shiyu Wei, Zhe Li, Krishnan Murugappan, Ziyuan Li, Mykhaylo Lysevych, Kaushal Vora, Hark Hoe Tan, Chennupati Jagadish, Buddini I Karawdeniya, Christopher J Nolan, Antonio Tricoli, Lan Fu
Diabetic ketoacidosis (DKA) is a life-threatening acute complication of diabetes characterized by the accumulation of ketone bodies in the blood. Breath acetone, a ketone, directly correlates with blood ketones. Therefore, monitoring breath acetone can significantly enhance the safety and efficacy of diabetes care. In this work, the design and fabrication of an InP/Pt/chitosan nanowire array-based chemiresistive acetone sensor is reported. By incorporation of chitosan as a surface-functional layer and a Pt Schottky contact for efficient charge transfer processes and photovoltaic effect, self-powered, highly selective acetone sensing is achieved...
March 13, 2024: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://read.qxmd.com/read/38472193/speaking-without-vocal-folds-using-a-machine-learning-assisted-wearable-sensing-actuation-system
#35
JOURNAL ARTICLE
Ziyuan Che, Xiao Wan, Jing Xu, Chrystal Duan, Tianqi Zheng, Jun Chen
Voice disorders resulting from various pathological vocal fold conditions or postoperative recovery of laryngeal cancer surgeries, are common causes of dysphonia. Here, we present a self-powered wearable sensing-actuation system based on soft magnetoelasticity that enables assisted speaking without relying on the vocal folds. It holds a lightweighted mass of approximately 7.2 g, skin-alike modulus of 7.83 × 105  Pa, stability against skin perspiration, and a maximum stretchability of 164%...
March 12, 2024: Nature Communications
https://read.qxmd.com/read/38470792/fish-scale-for-wearable-self-powered-teng
#36
JOURNAL ARTICLE
Liwei Zhao, Jin Han, Xing Zhang, Chunchang Wang
Flexible and wearable devices are attracting more and more attention. Herein, we propose a self-powered triboelectric nanogenerator based on the triboelectric effect of fish scales. As the pressure on the nanogenerator increases, the output voltage of the triboelectric nanogenerator increases. The nanogenerator can output a voltage of 7.4 V and a short-circuit current of 0.18 μA under a pressure of 50 N. The triboelectric effect of fish scales was argued to be related to the lamellar structure composed of collagen fiber bundles...
March 3, 2024: Nanomaterials
https://read.qxmd.com/read/38470759/highly-sensitive-and-stable-multifunctional-self-powered-triboelectric-sensor-utilizing-mo-2-ct-x-pdms-composite-film-for-pressure-sensing-and-non-contact-sensing
#37
JOURNAL ARTICLE
Jialiang Fan, Chenxing Wang, Bo Wang, Bin Wang, Fangmeng Liu
Sensors based on triboelectric nanogenerators (TENGs) are increasingly gaining attention because of their self-powered capabilities and excellent sensing performance. In this work, we report a Mo2 CTx -based triboelectric sensor (Mo-TES) consisting of a Mo2 CTx /polydimethylsiloxane (PDMS) composite film. The impact of the mass fraction (wt%) and force of Mo2 CTx particles on the output performance of Mo-TES was systematically explored. When Mo2 CTx particles is 3 wt%, Mo-TES3 achieves an open-circuit voltage of 86...
February 27, 2024: Nanomaterials
https://read.qxmd.com/read/38468974/noninvasive-wearable-sensor-for-the-continuous-monitoring-of-human-sound-and-movement-signals-in-real-time
#38
JOURNAL ARTICLE
Eun Ae Choi, Jeong Chan Lee, Mi Yu, Hyo Sung Kwak, Bishnu Kumar Shrestha, Chan Hee Park, Cheol Sang Kim
Recently, with the development of non-invasive human health monitoring technology including wearable devices, a flexible sensor that monitors 'human sound and movement signals' such as human voice and muscle movement is attracting attention. In this experiment, electrospun nanofibers were mixed with highly conductive nanoparticles and coated with polyaniline to detect the patient's electrical signals. Due to the high piezoelectric effect, nanofiber-based sensors do not require charging through a separate battery, so they can be used as self-powered devices...
March 15, 2024: Heliyon
https://read.qxmd.com/read/38466478/naturally-crosslinked-biocompatible-carbonaceous-liquid-metal-aqueous-ink-printing-wearable-electronics-for-multi-sensing-and-energy-harvesting
#39
JOURNAL ARTICLE
King Yan Chung, Bingang Xu, Di Tan, Qingjun Yang, Zihua Li, Hong Fu
Achieving flexible electronics with comfort and durability comparable to traditional textiles is one of the ultimate pursuits of smart wearables. Ink printing is desirable for e-textile development using a simple and inexpensive process. However, fabricating high-performance atop textiles with good dispersity, stability, biocompatibility, and wearability for high-resolution, large-scale manufacturing, and practical applications has remained challenging. Here, water-based multi-walled carbon nanotubes (MWCNTs)-decorated liquid metal (LM) inks are proposed with carbonaceous gallium-indium micro-nanostructure...
March 11, 2024: Nano-Micro Letters
https://read.qxmd.com/read/38466453/harness-high-temperature-thermal-energy-via-elastic-thermoelectric-aerogels
#40
JOURNAL ARTICLE
Hongxiong Li, Zhaofu Ding, Quan Zhou, Jun Chen, Zhuoxin Liu, Chunyu Du, Lirong Liang, Guangming Chen
Despite notable progress in thermoelectric (TE) materials and devices, developing TE aerogels with high-temperature resistance, superior TE performance and excellent elasticity to enable self-powered high-temperature monitoring/warning in industrial and wearable applications remains a great challenge. Herein, a highly elastic, flame-retardant and high-temperature-resistant TE aerogel, made of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/single-walled carbon nanotube (PEDOT:PSS/SWCNT) composites, has been fabricated, displaying attractive compression-induced power factor enhancement...
March 11, 2024: Nano-Micro Letters
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