Results 81 to 90 of about 448,853 (274)
Advanced Functional Materials, EarlyView.A cerium oxide‐carbon nanohybrid catalyst is synthesized via two distinct routes and is integrated into H‐type cells and gas diffusion layers (GDLs) to enhance electrochemical performance. Structural variations significantly affect performance, with the solvothermal sample exhibiting higher current densities.
Alessia Pollice +9 more
wiley +1 more source
Physical-Layer Security in Free-Space Optical Communications
IEEE Photonics Journal, 2015 The communication between two legitimate peers in the presence of an external eavesdropper is studied from a physical-layer security perspective in the context of free-space optical (FSO) communications.
F. Javier Lopez-Martinez +2 more
doaj +1 more source
A Stronger Soft-Covering Lemma and Applications
, 2015 Wyner's soft-covering lemma is a valuable tool for achievability proofs of information theoretic security, resolvability, channel synthesis, and source coding.
Cuff, Paul
core +1 more source
Directional-modulation-enabled physical-layer wireless security [PDF]
, 2017 Directional modulation (DM), as a promising keyless physical-layer security technique, has rapidly developed within the last decade. This technique is able to directly secure wireless communications in the physical layer by virtue of the property of its direction-dependent signal-modulation-formatted transmission.
Ding, Yuan, Fusco, Vincent
openaire +3 more sources
Advanced Functional Materials, EarlyView.This study presents the BioCLEAR system, a highly transparent and conductive neural electrode array composed of silver nanowires (AgNWs) and doped PEDOT:PSS, enabling neural recordings with minimal optical artifacts. When integrated with a GRIN lens, this cost‐effective neural implant allows simultaneous electrophysiological recording and GCaMP6‐based ...
Dongjun Han +17 more
wiley +1 more source
Enhancing physical layer security via channel feedback: a survey
EURASIP Journal on Wireless Communications and Networking, 2020 Physical layer security (PLS), which is based on information-theoretic principles of message confidentiality, has attracted considerable attention in recent years.
Bin Dai +4 more
doaj +1 more source
Photoswitching Conduction in Framework Materials
Advanced Functional Materials, EarlyView.This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez +4 more
wiley +1 more source
Analysis of short blocklength codes for secrecy
EURASIP Journal on Wireless Communications and Networking, 2018 In this paper, we provide secrecy metrics applicable to physical-layer coding techniques with finite blocklengths over Gaussian and fading wiretap channel models and analyze their secrecy performance over several cases of concatenated code designs.
Willie K. Harrison +3 more
doaj +1 more source
Secret Key Generation Based on AoA Estimation for Low SNR Conditions
, 2014 In the context of physical layer security, a physical layer characteristic is used as a common source of randomness to generate the secret key. Therefore an accurate estimation of this characteristic is the core for reliable secret key generation ...
Badawy, Ahmed +5 more
core +1 more source
Advanced Functional Materials, EarlyView.A reproducible synthesis to control 3D/0D phase ratios via water‐tuned solvent–antisolvent methods is presented. Enhanced scintillation yield and ultrafast decay are achieved. Defect‐driven emission mechanisms are revealed through cathodoluminescence and radioluminescence, shedding light on the underexplored role of the 0D Cs4PbBr6 and mixed 0D/3D ...
Mario Calora +18 more
wiley +1 more source