Results 41 to 50 of about 174,030,414 (303)

Correlated Charge Transport in an Organic Coulomb Glass

Advanced Materials, EarlyView.
ABSTRACT Advances in the development of organic field‐effect transistors (OFETs), electrically gated organic semiconductors (EGOFETs), and organic electrochemical transistors (OECTs) allow for the operation of these devices at very high charge‐carrier densities, where Coulomb interactions between carriers can be expected to become significant.
Magdalena Sophie Dörfler, Heinz Bässler, Harald Oberhofer, Anna Köhler   +3 more
wiley   +1 more source

A Geometry-Based Modelling Approach for the Line-of-Sight Probability in UAV Communications

IEEE Open Journal of the Communications Society
This paper presents a geometry-based three-dimensional Probability of Line of Sight $(P_{\mathrm {LoS}})$ model for generic urban environments. The existing $P_{\mathrm {LoS}}$ models are mostly empirical, based on measurements or ray-tracing ...
Abdul Saboor, Evgenii Vinogradov, Zhuangzhuang Cui, Akram Al-Hourani, Sofie Pollin   +4 more
doaj   +1 more source

Location Variability Confidence Interval Model Using Statistical Inference for Over-rooftop Paths and Signal Data Classification Method [PDF]

Journal of Electromagnetic Engineering and Science
In this paper, statistical inference is used to predict a practical linear equation for determining signal loss rates over distance in a suburban over-rooftop path under both line-of-sight (LoS) and non-line-of-sight (NLoS) conditions.
Sang-Hoo Yoon, Sang-Wook Park, Young-Keun Yoon, Jong-Ho Kim   +3 more
doaj   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Liquid‐Crystal‐Based Reconfigurable Intelligent Surface for 7 GHz Mobile Communication

Advanced Materials Technologies, EarlyView.
The glass‐based liquid‐crystal reconfigurable intelligent surface (LC‐RIS) integrates active‐matrix driving and blind‐greedy phase optimization within a 5G‐NR OFDM framework. This enables continuously tunable and autonomous enhancement of wireless coverage. Leveraging the transparency and manufacturability of liquid crystal panels, it is ideally suited
Tien‐Lun Ting, Yuh‐Chyi Chang, Yi‐Chan Hung, Cheng‐Yuan Hsiao, Chao‐Kai Wen, Tsung‐Hsien Lin   +5 more
wiley   +1 more source

TOA localization for multipath and NLOS environment with virtual stations

EURASIP Journal on Wireless Communications and Networking, 2017
An effective geometrical method which can locate a source based on the time-of-arrival (TOA) measurements and the floor plan information is proposed in simple non-line-of-sight (NLOS) indoor environment where the multiple-bound scattering signal paths ...
Deliang Liu, Ying Wang, Peng He, You Zhai, Hongyun Wang   +4 more
doaj   +1 more source

Toward Perception‐Native Electronic Skin: Bio‐Inspired In‐/Near‐Sensor and Neuromorphic Computing for Humanoid Robots

Advanced Materials Technologies, EarlyView.
Dense tactile streams from across the humanoid body converge on collide in a central wiring and data bottleneck. By relocating computation closer to and then into the skin itself, near‐ and in‐sensor architectures, together with neuromorphic computing, chart a path toward perception‐native electronic skin, in which the conversion of stimulus into ...
Mijin Kim, Chang‐Jae Beak, Jiyoung Park, Youngdo Jung, Sunjong Oh, Sin‐Hyung Lee, Bo‐Yeon Lee   +6 more
wiley   +1 more source

Kendali Formasi Multi-UAV menggunakan Line of Sight (LOS) Guidance Law

Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer, 2017
Ketika suatu UAV (pesawat tanpa awak) sudah mencapai batas kemampuannya, maka diperlukan multi-UAV untuk menggantikan tugas yang dibebankan kepada UAV. Selama ini multi-UAV lebih dipilih dalam menjalankan tugas yang besar sehingga didapatkan tingkat efektivitas yang lebih tinggi disertai kemampuan bertahannya yang lebih bagus dibandingkan milik UAV ...
Dyah Anggun Sartika, Denny Hardiyanto
openaire   +2 more sources

Recent Advances in Transparent Microelectrode Device Architecture and Fabrication Strategies for Biomedical Applications

Advanced Materials Technologies, EarlyView.
Transparent microelectrode arrays enable simultaneous optical and electrical electrophysiology with high spatiotemporal resolution, allowing multimodal observations of dynamic biological systems. Advances in materials and device architectures improve device performance by addressing key trade‐offs between optical transparency, impedance, and ...
Michael Abraham Listyawan, Tran Bach Dang, Chi Cong Nguyen, Yee Lap Pong, Tianruo Guo, Thanh Nho Do, Hoang‐Phuong Phan   +6 more
wiley   +1 more source

Line of Sight(LoS) Probability Prediction for Satellite and HAPs Communication in Trabzon, Turkey

International Journal of Applied Mathematics, Electronics and Computers, 2016
The knowledge of Line of Sight (LoS) probability is curicial to estimate signal attenuation correctly in mobile wireless communication. Especially in built-up areas, more accurate LoS probability determination helps to obtain more realistic propagation models or path loss models.
Aydın, Volkan, Çavdar, İsmail Hakkı, HASIRCI, ZEYNEP   +2 more
openaire   +3 more sources