Results 121 to 130 of about 25,650 (293)

A novel method for developing post-quantum cryptoschemes and a practical signature algorithm [PDF]

Applied Computing and Informatics
Purpose – The practical purpose of this research is to propose a candidate for post-quantum signature standard that is free of significant drawback of the finalists of the NIST world competition, which consists in the large size of the signature and the ...
Nikolay Andreevich Moldovyan, Dmitriy Nikolaevich Moldovyan   +1 more
doaj   +1 more source

Quantum advantage for probabilistic one-time programs

, 2018
One-time programs, computer programs which self-destruct after being run only once, are a powerful building block in cryptography and would allow for new forms of secure software distribution.
Roehsner, Marie-Christine (Quantum Optics, Quantum Nanophysics and Quantum Information, Faculty of Physics, University of Vienna), Batalhão, Tiago B. (Quantum Optics, Quantum Nanophysics and Quantum Information, Faculty of Physics, University of Vienna), Kettlewell, Joshua A. (Singapore University of Technology and Design), Walther, Philip (Quantum Optics, Quantum Nanophysics and Quantum Information, Faculty of Physics, University of Vienna), Fitzsimons, Joseph F. (Research Platform Erwin Schrödinger International Institute for Mathematics and Physics, Support facilities, University of Vienna)   +4 more
core   +1 more source

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

Advanced 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, Kunmo Koo, Zizhen Cai, Paty Meza, Yu Wen, Byungseok Seo, Yukun Liu, Xiaobing Hu, Vinayak P. Dravid   +8 more
wiley   +1 more source

Application of photoluminescence and electroluminescence techniques to the characterization of intermediate band solar cells

, 2011
The intermediatebandsolarcell (IBSC) is a photovoltaic device with a theoretical conversion efficiency limit of 63.2%. In recent years many attempts have been made to fabricate an intermediateband material which behaves as the theory states.
Hernández, E., Antolín Fernández, Elisa, Stanley, C.R., Hernández Martín, Estela, Stanley, C., Farmer, C., Stanley, Colin, Farmer, C.D., García-Linares Fontes, Pablo, Ramiro Gonzalez, Iñigo, Antolín, E., Martí, A., Ramiro, I., Linares, P.G., Luque, A., Luque López, Antonio, Martí Vega, Antonio   +16 more
core   +1 more source

Magnetic‐Field Control of Surface States in CoFe2O4 Thin Films for Nitrate Electroreduction to Ammonia

Advanced Functional Materials, EarlyView.
Magnetic‐field‐assisted CVD of heterometallic single‐source precursors modulates thin‐film surface electronic structure and interfacial charge transfer. Field‐grown (Cobalt ferrite‐1T)CF‐1T films exhibit stabilized electronic states, lower kinetic barriers, and markedly enhanced nitrate‐to‐ammonia electrocatalysis versus (Cobalt ferrite‐0T) CF‐0T ...
Touraj Karimpour, Younes Mousazade, Simon Diel, Shilendra Kumar Sharma, Tisita Das, Nathália C. Verissimo, Thomas Fischer, Ziyaad Aytuna, Andreas Lichtenberg, Sudip Chakraborty, Marcel Risch, Sanjay Mathur   +11 more
wiley   +1 more source

Ultrasmall High‐Entropy Materials: Nanoscale Effects, Synthesis, and Mechanistic Insights

Advanced Functional Materials, EarlyView.
This review article focuses on sub‐10 nm high‐entropy materials that combine nanoscale design with complex compositions for next‐generation applications. ABSTRACT Ultrasmall high‐entropy nanomaterials (USHENMs, <10 nm) merge multicomponent chemistry with size‐dependent effects, forming a distinct class of materials with unprecedented properties.
Yueyue He, Wenbo Wang, Simon Schweidler, Yanjiao Ma, Ben Breitung, Torsten Brezesinski   +5 more
wiley   +1 more source

Unified Analytical Framework for Understanding the Operational Stability of Blue Phosphorescent OLEDs: Quantitative Insights Into Exciton Recycling and Bimolecular Interactions

Advanced Functional Materials, EarlyView.
Blue phosphorescent OLEDs remain limited by poor operational stability. Here, a unified analytical framework integrating transient photoluminescence and magneto‐electroluminescence is developed to correlate intrinsic material photophysics with electrically driven degradation.
Hakjun Lee, Bum June Park, Taekyung Kim
wiley   +1 more source

Quantum Digital Signature Generation with Quantum Continuous Variables [PDF]

Ensuring the security of digital communication and data transfer has become essential in the modern era. Classical cryptographic techniques are increasingly vulnerable due to advances in quantum technologies and algorithms.
Can Aktaş, Cumali Yaşar
core   +1 more source

Powering Nanocrystal‐Based Heat Engines With Light‐Emitting Metasurfaces That Influence Their Temperature

Advanced Functional Materials, EarlyView.
Metasurfaces and other structured photonic environments can dramatically modify the absorption and/or light emission of semiconductors. However, the consequences of these changes on the temperature of the system are not well understood. The authors address this problem for colloidal nanocrystals and leverage their findings to convert light into ...
Hugo Kowalczyk, Yihao Yuan, Augustin Caillas, Amel Saidoun, Roméo Bonnet, Pascal Filloux, Emmanuel Lhuillier, Aloyse Degiron   +7 more
wiley   +1 more source

Arbitrated quantum signature with an untrusted arbitrator

, 2011
In an arbitrated signature scheme, all communications involve a so called arbitrator who has access to the contents of the messages. The security of most arbitrated signature schemes depends heavily on the trustworthiness of the arbitrators.
Yi-Wei Teng, Yu-Guang Yang, Zheng Zhou, Qiao-Yan Wen   +3 more
core   +1 more source