Results 61 to 70 of about 116,797 (291)

Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration

Advanced Functional Materials, EarlyView.
Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley   +1 more source

Junction Temperature Estimation Model of Power MOSFET Device Based on Photovoltaic Power Enhancer

Journal of Low Power Electronics and Applications
In a photovoltaic power enhancer system, when it is operated in current-control mode, significant nonuniform temperature distribution occurs in the converter due to thermal coupling effects, dissipative boundary conditions, and differences in device ...
Ning Li, Shubin Zhang, Yanfeng Jiang
doaj   +1 more source

Storage and Retrieval of Thermal Light in Warm Atomic Vapor

, 2010
We report slowed propagation and storage and retrieval of thermal light in warm rubidium vapor using the effect of electromagnetically-induced transparency (EIT).
Cho, Young-Wook, Kim, Yoon-Ho
core   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

Advanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Lifetime prediction of a multi-chip high-power LED light source based on artificial neural networks

Results in Physics, 2019
A high power light-emitting diodes (LED) light source, which is assembled by many LED chips and heat sink, has a not uniform temperature distribution at working condition.
Hongwei Liu, Dandan Yu, Pingjuan Niu, Zanyun Zhang, Kai Guo, Di Wang, Jianxin Zhang, Xin Ma, Chengkui Jia, Chaoyu Wu   +9 more
doaj   +1 more source

Probing Unified Origin of Dark Matter and Baryon Asymmetry at PAMELA/Fermi

, 2009
We propose an unified model of dark matter and baryon asymmetry in a lepto-philic world above the electroweak scale. We provide an example where the inflaton decay products subsequently generate a lepton asymmetry and a dark matter abundance with an ...
Kohri, Kazunori, Mazumdar, Anupam, Sahu, Narendra, Stephens, Philip   +3 more
core   +1 more source

Optomechanical tailoring of quantum fluctuations [PDF]

, 2000
We propose the use of feedback mechanism to control the level of quantum noise in a radiation field emerging from a pendular Fabry-Perot cavity. It is based on the possibility to perform quantum nondemolition measurements by means of optomechanical ...
Mancini, S., Wiseman, H. M.
core   +2 more sources

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

Three-dimensional electro-thermal coupling analysis of ultra-high-voltage autotransformer based on MPI-PETSc parallel computing framework

Sustainable Energy Research
Ultra-high-voltage (UHV) autotransformers are widely employed in long-distance power transmission systems. Their operation involves complex energy conversion and coupling mechanisms, including high-intensity magnetic induction energy and strong induced ...
E. Tianlong, Kai Qin, Zhao Liu, Yanwen Xu, Linke Huang   +4 more
doaj   +1 more source

Mechanically Tunable Negative-Index Photonic Crystal Lens

IEEE Photonics Journal, 2010
We report the microelectromechanical systems (MEMS)-enabled mechanically tunable negative-index photonic crystal lens, which was comprised of 2-D photonic crystal and symmetrical electro-thermal actuators. The 2-D photonic crystal was made of a honeycomb
Y. Cui, V. A. Tamma, J.-B. Lee, W. Park
doaj   +1 more source