Results 41 to 50 of about 483,083 (296)

Miniaturized and Wireless Optical Neurotransmitter Sensor for Real-Time Monitoring of Dopamine in the Brain

Sensors, 2016
Real-time monitoring of extracellular neurotransmitter concentration offers great benefits for diagnosis and treatment of neurological disorders and diseases.
Min H. Kim, Hargsoon Yoon, Sang H. Choi, Fei Zhao, Jongsung Kim, Kyo D. Song, Uhn Lee   +6 more
doaj   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

Voice Assistant Utilization among the Disability Community for Independent Living: A Rapid Review of Recent Evidence

Human Behavior and Emerging Technologies
The rapid advancement and widespread adoption of voice assistance technology have shown promise in benefiting individuals with disabilities, offering increased social participation, independence, and leisure activities.
Paola Esquivel, Kayden Gill, Mary Goldberg, S. Andrea Sundaram, Lindsey Morris, Dan Ding   +5 more
doaj   +1 more source

Telecommunication Platforms for Transmitting Sensor Data over Communication Networks—State of the Art and Challenges

Sensors, 2016
The importance of constructing wide-area sensor networks for holistic environmental state evaluation has been demonstrated. A general structure of such a network has been presented with distinction of three segments: local (based on ZigBee, Ethernet and ...
Kamil Staniec, Marcin Habrych
doaj   +1 more source

Integration of Perovskite/Low‐Dimensional Material Heterostructures for Optoelectronics and Artificial Visual Systems

Advanced Functional Materials, EarlyView.
Heterojunctions combining halide perovskites with low‐dimensional materials enhance optoelectronic devices by enabling precise charge control and improving efficiency, stability, and speed. These synergies advance flexible electronics, wearable sensors, and neuromorphic computing, mimicking biological vision for real‐time image analysis and intelligent
Yu‐Jin Du, Junjie Yang, Ziyu Lv, Yongbiao Zhai, Zezhuang Yi, Yuhui Xie, Ming‐Lin Zheng, Xiangyu Ma, Guodong Gong, Yan Wang, Ye Zhou, Su‐Ting Han   +11 more
wiley   +1 more source

Optimization of a Color-Based Spatial Modulation Scheme for VLC Under Illuminance and SINR Constraints

IEEE Access, 2022
This treatise presents a framework for the optimisation of a colour-based optical spatial modulation for visible light communication (VLC). The focus is particularly on the conflicting interests between illuminance and signal transmission.
Galefang A. Mapunda, Abraham Sanenga, Bokamoso Basutli, Joseph M. Chuma   +3 more
doaj   +1 more source

Enhancing Indoor Photovoltaic Efficiency to 37.6% Through Triple Passivation Reassembly and n‐Type to p‐Type Modulation in Wide Bandgap Perovskites

Advanced Functional Materials, EarlyView.
Triple Passivation Treatment (TPT) strategy enables 1.75 eV wide‐bandgap perovskite solar cells (WB‐PSCs) with suppressed halide phase segregation and n‐to‐p type surface transition. The photoluminescence quantum yield increases from 0.5 to 2.1%, indicating reduced non‐radiative losses.
Siming Huang, Shanyue Hou, Galyam Sanfo, Jingdong Xu, Yuting Wang, Himal Muwanwella, Lukas Pfeifer, Xiang Liu, Shaik M Zakeeruddin, Yuelong Huang, Michael Grätzel, Muhammad Tariq Sajjad, Mojtaba Abdi‐Jalebi   +12 more
wiley   +1 more source

High‐Performance Millimeter Scale Electromagnetic Generator

Advanced Functional Materials, EarlyView.
A high‐performance millimeter‐scale electromagnetic generator (mmEMG) is developed using magnetic flux concentrator (MFC) films on both coil ends to enhance magnetic flux. Through simulations and experiments, structural and magnetic properties are optimized, achieving a 5.6‐fold electrical output improvement.
Jin Pyo Lee, Xinran Zhou, Yangyang Xin, Dace Gao, Peiwen Huang, Pooi See Lee   +5 more
wiley   +1 more source

Understanding and Addressing the Performance Asymmetry Issue in Semitransparent Laminated Organic Photovoltaic Devices

Advanced Functional Materials, EarlyView.
This work addresses the challenge of current–voltage asymmetry in scalable laminated semitransparent organic photovoltaics (OPVs) for indoor applications. Vertical stratification of materials is shown to create an energy barrier, leading to performance differences under different illumination directions.
Gulzada Beket, Anton Zubayer, Leonie Pap, Huagui Lai, Samiran Bairagi, Nakul Jain, Jochen Stahn, Fan Fu, Kenneth Järrendahl, Fredrik Eriksson, Xabier Rodríguez‐Martínez, Olle Inganäs, Uli Würfel, Thomas Österberg, Jonas Bergqvist, Feng Gao   +15 more
wiley   +1 more source

Communication System Comparison of IoT Applications Using Custom-Designed Antennas: A Basic Experimental Study

Engineering Proceedings
A comparative study of the performance of a communication system for IoT applications is presented. The experiment is based on the bit error rate, which is obtained by varying the distance between two transceiver modules, each attached to a ...
Marco Vinueza Bustamante, Jordan Guillén Arteaga, Carlos Yépez Vera, Aldrin Reyes Narváez, Hernan Barba Molina   +4 more
doaj   +1 more source