Results 71 to 80 of about 1,792 (277)

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

open access: yesAdvanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho   +8 more
wiley   +1 more source

Wiretap Channel in the Presence of Action-Dependent States and Noiseless Feedback

open access: yesJournal of Applied Mathematics, 2013
We investigate the wiretap channel in the presence of action-dependent states and noiseless feedback. Given the message to be communicated, the transmitter chooses an action sequence that affects the formation of the channel states and then generates the
Bin Dai, A. J. Han Vinck, Yuan Luo
doaj   +1 more source

The Degraded Gaussian Many-Access Wiretap Channel

open access: yes, 2019
Click on the DOI link to access the article (may not be free).The Gaussian multiple-access wiretap channel when the number of transmitters grows unbounded and at most linearly with the blocklength is studied. Its capacity region is characterized when the
Chou, Rémi   +3 more
core   +1 more source

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

open access: yesAdvanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo   +7 more
wiley   +1 more source

Secure Spectrum-Sharing Wiretap Networks With Full-Duplex Relaying

open access: yesIEEE Access, 2019
In this paper, we investigate the secrecy performance of dual-hop randomize-and-forward (RaF) cognitive wiretap networks over Rayleigh fading channels, in which the RaF relay is considered both as half-duplex (HD) and full-duplex (FD) operations ...
Zhihui Shang   +4 more
doaj   +1 more source

A new broadcast wiretap channel model

open access: yes, 2017
A new broadcast wiretap channel (B-WTC) with a wiretapper who noiselessly taps into a fixed-length subset of the transmitted symbols of her choice, and observes the remainder through a noisy channel, is studied.
Nafea, Mohamed   +3 more
core   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg   +6 more
wiley   +1 more source

Bandgap‐Engineered AlGaAs/GaAs Heterostructures for Wavelength‐Selective Dual‐Polarity Photoelectrochemistry

open access: yesAdvanced Functional Materials, EarlyView.
Bandgap‐engineered AlGaAs/GaAs heterostructures exhibit wavelength‐selective dual‐polarity photoelectrochemistry, switching from photocathodic to photoanodic response depending on excitation wavelength. The polarity transition is governed by band‐selective absorption, built‐in electric‐field‐driven carrier transport, and interfacial charge‐transfer ...
Yukai Mao   +9 more
wiley   +1 more source

Ergodic secrecy capacity for downlink multiuser networks using switch‐and‐examine combining with post‐selection scheduling scheme

open access: yesElectronics Letters, 2016
A novel threshold‐based scheduling scheme for multiuser downlink wiretap networks is addressed, which consist of a base station (BS), multiple legitimate users and multiple eavesdroppers.
Maoqiang Yang   +4 more
doaj   +1 more source

Performance Analysis and Experimental Investigation of Physical-Layer Security in OCDMA-Based Hybrid FSO/Fiber Wiretap Channel

open access: yesIEEE Photonics Journal, 2019
In this paper, optical code division multiple access (OCDMA) based hybrid free-space optical (FSO)/fiber wiretap channel is proposed, and the physical-layer security is analyzed theoretically, using the conditional secrecy outage probability as ...
Jianhua Ji   +3 more
doaj   +1 more source

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