Results 41 to 50 of about 187,675 (250)

Characterization of Sub-Monolayer Contaminants at the Regrowth Interface in GaN Nanowires Grown by Selective-Area Molecular Beam Epitaxy

Crystals, 2018
While GaN nanowires (NWs) offer an attractive architecture for a variety of nanoscale optical, electronic, and mechanical devices, defects such as crystal polarity inversion domains (IDs) can limit device performance.
Paul Blanchard, Matt Brubaker, Todd Harvey, Alexana Roshko, Norman Sanford, Joel Weber, Kris A. Bertness   +6 more
doaj   +1 more source

Automating Chemical Reasoning in High‐Throughput Phase Identification With a Probabilistic, LLM‐Guided Framework

Advanced Science, EarlyView.
Autonomous laboratories can now synthesize materials faster than experts can interpret the resulting diffraction data. A probabilistic framework combines refinement‐fit metrics with large language model‐derived chemical reasoning to rank competing phase interpretations and flag those unsuitable for autonomous use.
Olympia Dartsi, Lauren N. Walters, Amalie E. Trewartha, Steven B. Torrisi, Amanda Volk, Liam Joyce, Gerbrand Ceder, Anubhav Jain   +7 more
wiley   +1 more source

Efficient chip-based optical parametric oscillators from 590 to 1150 nm

APL Photonics, 2022
Optical parametric oscillators are widely used to generate coherent light at frequencies not accessible by conventional laser gain. However, chip-based parametric oscillators operating in the visible spectrum have suffered from pump-to-signal conversion ...
Jordan R. Stone, Xiyuan Lu, Gregory Moille, Kartik Srinivasan   +3 more
doaj   +1 more source

Voltage‐Reconfigurable Magneto‐Ionic Nanolayers in Dot Arrays for Probabilistic, Materials‐Engineered Security Primitives

Advanced Science, EarlyView.
A magneto‐ionic security‐by‐materials‐design strategy exploits voltage‐driven N3– migration in selectively contacted FeCoN dots, creating reconfigurable sub‐15 nm ferromagnetic sublayers with deterministic and/or probabilistic (single‐domain↔vortex) states, voltage‐tunable probabilities and fully stochastic orientation/chirality.
Irena Spasojevic, Federica Celegato, Alessandro Magni, Paola Tiberto, Jordi Sort   +4 more
wiley   +1 more source

Flow Measurement Through Orifice‐Metre With Decision Tree Regression Method

Digital Twins and Applications
The effective design of orifice is a major concern for the flow field measurement. The error of the flow occurs downstream of the orifice due to instability and back flow. Accurate orifice design boosts the precise flow field measurements. Predicting the
Aswini Kumar Khuntia, Santosh Kumar Panda, Souren Misra, Alok Patra   +3 more
doaj   +1 more source

Performance and Statistical Analysis of Stream ciphers in GSM Communications

Journal of Communications Software and Systems, 2020
For a stream cipher to be secure, the keystreamgenerated by it should be uniformly random with parameter 1/2.Statistical tests check whether the given sequence follow a certainprobability distribution.
Nagendar Yerukala, V Kamakshi Prasad, Allam Apparao   +2 more
doaj  

Herbivory‐Induced Stomatal Opening Triggers the Dispersal of an Invasive Insect Herbivore

Advanced Science, EarlyView.
The invasive leafminer Phthorimaea absoluta uniquely manipulates plant defenses by inducing stomatal opening in tomato. This response, mediated by the stomatal regulator IQM1, enhances the release of the repellent volatile benzaldehyde. This volatile triggers the dispersal of adult moths, facilitates colonization of new hosts, and leads to rapid ...
Limin Chen, Xiaowei Li, Yaru Wang, Farman Ullah, Shuxing Zhou, Lemeng Dong, Weizhong He, Harro J. Bouwmeester, Youming Hou, Ian T. Baldwin, Yaobin Lu   +10 more
wiley   +1 more source

Karen Brown (Acting NIST Director) and unidentified man at NIST 2001 Centennial History and Reunion Day

, 2001
NIST held a number of events to mark its centennial celebration in March 2001. The NIST History and Centennial Symposium-Reunion Day for NIST staff and alumni was held on March 5 AT NIST Boulder and NIST Gaithersburg, pictured here. This image is part of
National Institute of Standards and Technology
core   +4 more sources

AI-driven antimicrobial peptide characterization unveils novel motifs for drug design

Scientific Reports
Antibiotics have been developed to effectively target and eliminate bacteria, but the rise in antimicrobial resistance (AR) complicates the treatment of certain infections.
Sarala Padi, Kinjal Mondal, David P. Hoogerheide, Frank Heinrich, Mihaela Mihailescu, Jeffery B. Klauda, Antonio Cardone   +6 more
doaj   +1 more source

Unifying scrambling, thermalization and entanglement through measurement of fidelity out-of-time-order correlators in the Dicke model

Nature Communications, 2019
The scrambling of quantum information in a many-body system leads to the emergence of statistical mechanics and chaotic behaviour. Here the authors establish quantitative relationships between experimentally-measureable correlators, the Rényi entropy and
R. J. Lewis-Swan, A. Safavi-Naini, J. J. Bollinger, A. M. Rey   +3 more
doaj   +1 more source