Results 221 to 230 of about 991,733 (290)

Environmental Control of Ferroelectricity in Hafnia Films

Advanced Materials, EarlyView.
A reversible transition from nonferroelectric to ferroelectric behavior is achieved in hafnia films by modulating the surrounding atmosphere. The domain relaxation dynamics exhibit high sensitivity to environmental factors, including gas composition (ambient, N2, CO2, O2) and relative humidity, highlighting the crucial role of the measurement ...
Waseem Ahmad Wani, Nicolas K. Lam, Kristina M. Holsgrove, Gerald Bejger, Tinsae Alem, Kory Burns, Stephen J. McDonnell, Christina M. Rost, Amit Kumar, Jon F. Ihlefeld, Brian J. Rodriguez   +10 more
wiley   +1 more source

Machine Learning‐Driven Grayscale Digital Light Processing for Mechanically Robust 3D‐Printed Gradient Materials

Advanced Materials, EarlyView.
A machine learning‐driven grayscale digital light processing (g‐DLP) platform integrates optimization of gradient structures and photocurable resin materials with extensive tunability. The optimized gradient structure, fabricated from developed polyurethane acrylates with enhanced damping and customizable stiffness, reduces stress concentration ...
Jisoo Nam, Boxin Chen, Miso Kim
wiley   +1 more source

Semiconducting Pt Structures Stabilized on 2D MoS2 Crystals Enable Ultrafast Hydrogen Evolution

Advanced Materials, EarlyView.
The interaction of small Pt particles with 2D MoS2 crystals can stabilize bilayer Pt structures, with a semiconducting electronic structure. The semiconducting electronic structure of Pt bilayers constitutes the so far unexplored transition domain between the bulk‐like, metallic band structure of compact nanoparticles and the discrete atomic orbitals ...
Tamás Ollár, Péter Vancsó, Péter Kun, Antal A. Koós, Gergely Dobrik, Ekaterina V. Sukhanova, Zakhar I. Popov, Miklós Németh, Krisztina Frey, Béla Pécz, Péter Nemes‐Incze, Chanyong Hwang, József Sándor Pap, Levente Tapasztó   +13 more
wiley   +1 more source

Synthetic Chromatophores for Color and Pattern Morphing Skins

Advanced Materials, EarlyView.
Cephalopods use chromatophore organs (muscle‐actuated pigment sacs) to alter their skin color and pattern. Synthetic chromatophores, which closely mimic the mechano‐optical process found in cephalopods using stimuli‐responsive microscale hydrogel actuators, are reported.
Brennan P. Watts, Matthew R. Jamison, John M. Kapitan, Nengjian Huang, Delroy Taylor, Stephen A. Morin   +5 more
wiley   +1 more source

Heterojunction‐Driven Stochasticity: Bi‐Heterojunction Noise‐Enhanced Negative Transconductance Transistor in Image Generation

Advanced Materials, EarlyView.
This work engineered a bi‐heterojunction noise‐enhanced negative transconductance (BHN‐NTC) transistor using a half‐PTCDI‐C13 layer, achieving expanded and tunable noise characteristics. This advancement enables efficient multi‐bit TRNGs for AI‐driven image generation and enhances logic circuit applications.
Youngmin Han, Ryun‐Han Koo, Jaechan Song, Chang‐Hyun Kim, Eun Kwang Lee, Wonjun Shin, Hocheon Yoo   +6 more
wiley   +1 more source

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Probabilistic system opacity in discrete event systems

Discrete Event Dynamic Systems, 2016
In many emerging security applications, a system designer frequently needs to ensure that a certain property of a given system (that may reveal important details about the system's operation) be kept secret (opaque) to outside observers (eavesdroppers or intruders).
Keroglou, C., Hadjicostis, Christoforos N., Keroglou, C., Hadjicostis, Christoforos N.   +3 more
openaire   +7 more sources

Finite-Time Event-Triggered Stabilization for Discrete-Time Fuzzy Markov Jump Singularly Perturbed Systems

IEEE Transactions on Cybernetics, 2022
The finite-time event-triggered stabilization is studied for a class of discrete-time nonlinear Markov jump singularly perturbed models with partially unknown transition probabilities (TPs).
Wenhai Qi, Can Zhang, Guangdeng Zong, S. Su, M. Chadli   +4 more
semanticscholar   +1 more source

Diagnosability of discrete event systems

IEEE Transactions on Automatic Control, 1995
The authors study the diagnosability of discrete-event systems. Failure detection and isolation is an important task in the automatic control of large, complex systems. A discrete event system (DES) approach to the problem of failure diagnosis is proposed in this work.
Stéphane Lafortune, Meera Sampath, Demosthenis Teneketzis, K. Sinnamohideen, Raja Sengupta   +4 more
openaire   +2 more sources

DISCRETE EVENT SYSTEM SPECIFICATION MODELING AND SIMULATION

Online World Conference on Soft Computing in Industrial Applications, 2018
Discrete Event System Specification (DEVS) is a popular formalism for modeling complex dynamic systems using a discrete-event abstraction. At this abstraction level, a timed sequence of pertinent "events" input to a system (or internal timeouts) cause ...
Yentl Van Tendeloo, H. Vangheluwe
semanticscholar   +1 more source

Control of an engineering-structured multilevel discrete-event system

International Workshop on Discrete Event Systems, 2016
Control of a multilevel system is developed for a discrete-event system (DES) structured by an engineering model. In a multilevel system, each subsystem has a set of children at the next-lower level and a unique parent at the next-higher level.
J. Komenda, Tomas Masopust, J. H. Schuppen   +2 more
semanticscholar   +1 more source