Results 101 to 110 of about 6,255 (291)

Spectroscopic Investigation of Polysulfide Redox Evolution in Catholyte Solutions for Potassium–Sulfur Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Potassium–sulfur batteries are investigated using UV–vis spectroscopy to track the evolution of potassium polysulfide species at elevated temperature. The study reveals sulfur radical anions as key intermediates and shows how solvent composition and cell design influence polysulfide stability, redox behavior, and cycling performance, providing insights
Chiara Morini   +7 more
wiley   +1 more source

An Analysis of the Smartphone Point-of-Sale System

open access: yes, 2012
Smartphones have become powerful enough to replace general purpose computers as the platform for payment applications. This thesis investigates Android smartphone payment applications and audio-jack magnetic card readers (AMSRs).
Frisby, WesLee
core  

Cryptographic Key Distribution In Wireless Sensor Networks Using Bilinear Pairings [PDF]

open access: yes, 2010
It is envisaged that the use of cheap and tiny wireless sensors will soon bring a third wave of evolution in computing systems. Billions of wireless senor nodes will provide a bridge between information systems and the physical world.
Szczechowiak, Piotr
core  

On Bluetooth Repairing: Key Agreement based on Symmetric-Key Cryptography [PDF]

open access: yes, 2008
. Despite many good (secure) key agreement protocols based on publickey cryptography exist, secure associations between two wireless devices are often established using symmetric-key cryptography for cost reasons.
Vaudenay, Serge, Serge Vaudenay
core   +1 more source

Typing High-Speed Cryptography against Spectre v1

open access: yes, 2023
International audienceThe current gold standard of cryptographic software is to write efficient libraries with systematic protections against timing attacks. In order to meet this goal, cryptographic engineers increasingly use high-assurance cryptography
Barthe, Gilles   +15 more
core   +1 more source

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

open access: yesAdvanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri   +11 more
wiley   +1 more source

Topics and Research Directions for Symmetric Cryptography [PDF]

open access: yes, 2017
peer reviewedThis is a summary of the open discussion on future research topics for symmetric cryptography chaired by Stefan Lucks.
Daemen, Joan   +3 more
core  

Unlocking Exceptional Strengthening in Aluminum Alloys via Interstitial Cottrell Atmosphere Formation

open access: yesAdvanced Functional Materials, EarlyView.
Cyclic unloading‐aging‐reloading micro‐tensile tests under various aging durations and temperatures, combined with comprehensive microstructural characterization reveal that the yield point phenomenon in Aluminum‐Carbon (Al‐C) thin films originates from Cottrell atmosphere formation.
Zion Lee   +10 more
wiley   +1 more source

Performance Evaluation of NIST-Standardized Post-Quantum and Symmetric Ciphers for Mitigating Deepfakes

open access: yesCryptography
Deepfake technology can produce highly realistic manipulated media which pose as significant cybersecurity threats, including fraud, misinformation, and privacy violations.
Mohammad Alkhatib
doaj   +1 more source

Unraveling MXene Oxidation Mechanisms Under Realistic Gas Environments by In Situ Gas‐Cell TEM

open access: yesAdvanced Functional Materials, EarlyView.
Real‐time visualization of MXene degradation reveals a fundamental oxidation mechanism under oxygen and moisture environments. Using in situ gas‐cell electron microscopy, this study demonstrates that oxygen degradation drives a thermodynamically controlled high‐temperature transformation into mixed rutile/anatase phases.
Yongfa Cheng   +8 more
wiley   +1 more source

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