Results 71 to 80 of about 2,083,931 (311)

Infinitesimal rigidity of convex surfaces through the second derivative of the Hilbert-Einstein functional II: Smooth case [PDF]

, 2011
The paper is centered around a new proof of the infinitesimal rigidity of smooth closed surfaces with everywhere positive Gauss curvature. We use a reformulation that replaces deformation of an embedding by deformation of the metric inside the body ...
I Polyhedral Case, Ivan Izmestiev
core  

Bioelectronic Sensors for Neuromuscular Perception in Human‐Machine Interfaces

Advanced Robotics Research, EarlyView.
This review summarizes recent advances in bioelectronic sensors for neuromuscular perception in human‐machine interfaces. By integrating biopotential, electrical impedance, and electrochemical sensing strategies with flexible electrode interfaces, these bioelectronic sensing systems enable intuitive, real‐time detection of muscle and nerve activity ...
Junwei Li, Bangyan Niu, Kunlin Wu, Jingcheng Xiao, Xiaoyan Liu, Yifan Wang   +5 more
wiley   +1 more source

On a Gauss-Kuzmin type problem for piecewise fractional linear maps with explicit invariant measure

International Journal of Mathematics and Mathematical Sciences, 2000
A random system with complete connections associated with a piecewise fractional linear map with explicit invariant measure is defined and its ergodic behaviour is investigated. This allows us to obtain a variant of Gauss-Kuzmin type problem for the
C. Ganatsiou
doaj   +1 more source

Kinetically Controlling Surface Atom Arrangements in Thermally Robust, Amorphous High‐Entropy Alloy Nanoparticles by Solvent Selection

Advanced Science, EarlyView.
This work leverages the level of carbon supersaturation in the metallic constituents during particle formation to regulate nanoparticle morphology, structure, and composition distribution. The solvent‐dependent (C/(C+O)) ratio and the relative kinetics of the competing reactions of carbon shell formation, coalescence of metallic constituents, and ...
Varatharaja Nallathambi, Se‐Ho Kim, Andrea M. Mingers, Petra Ebbinghaus, Baptiste Gault, Sven Reichenberger, Dierk Raabe, Stephan Barcikowski   +7 more
wiley   +1 more source

Predicting the Stability of Base‐mediated C─H Carboxylation Adducts Using Data Science Tools

Angewandte Chemie, EarlyView.
A computational approach integrating quantum chemistry and machine learning enables the prediction of CO2–adduct stability. Model interpretability and experimental validation highlight its utility for designing base‐mediated C–H carboxylation reactions.
Maike Eckhoff, Shubham Deolka, Aleria Garcia‐Roca, Lilly Meynberg, Liudmila Seidel, Matthew S. Sigman, Jonny Proppe   +6 more
wiley   +2 more sources

Tribo‐Charge Induced Wetting (TCW): A New Wettability Control Mechanism for Electric‐Free Droplet Manipulation

Advanced Science, EarlyView.
Tribo‐charge induced wetting (TCW) is introduced as an electric‐free mechanism for dynamic wettability modulation. TCW utilizes surface charges generated through contact electrification to modulate surface wettability via electrostatic induction across a dielectric layer.
Yeonwoo Lee, Sung‐Yong Park
wiley   +1 more source

Contact Electrification via Redox‐Active Molecules

Angewandte Chemie, EarlyView.
We present a novel molecular design strategy to perform electronic charge transfer during contact electrification by functionalizing surfaces with redox‐active organic molecules. To elucidate and quantify the underlying molecular‐level electron transfer processes, we combine X‐ray photoelectron spectroscopy, electrochemical analysis, density functional
Nisha Ranjan, Zohreh Izadi, Philipp Gaiser, María B. Camarada, Rekha Sharma, Andrej Weber, Michael Daub, Qiwei Hu, Michael Fiederle, Leonard Mayrhofer, Michael Moseler, Anna Fischer, Michael Walter, Birgit Esser, Bizan N. Balzer   +14 more
wiley   +2 more sources

Desirable Pore Connectivity Effects in Multiscale Interactive Cobalt Centers with Asymmetric B/N‐Coordination Carbon for Promoting Zn‐Air Batteries

Advanced Science, EarlyView.
A bicontinuous constructed cobalt active centers/asymmetric B/N‐coordination carbon catalyst is developed, which the ZAB assembled with CoBNPCF‐900 air cathode exhibits ultralong stability (1706.6 h). The permeability simulations indicate that the catalytic active site is highly exposed to the electrolyte, guaranteeing a high catalytic efficiency ...
Tingzheng Fu, Hongbiao Xiao, Qiusen Liu, Ye Yu, Zhiqing Che, Yixing Zhang, Anran Chen, Mian Li, Tingting Liu   +8 more
wiley   +1 more source

Axial Coordination Induced Electron Delocalization and p‐p Orbital Hybridization in Single‐Atom Catalysts Boosts Zn2+ Desolvation for Highly Stable Zn Anode

Advanced Science, EarlyView.
The F‐axial coordinated Sb SAs (F‐Sb SAs) can effectively reduce the desolvation energy of hydrated Zn2+ ions and greatly accelerate the migration kinetics of Zn2+ ions. The symmetric cell and Zn‐I2 batteries based on F‐Sb SAs@Zn anode exhibit outstanding stability.
Yan Dao, Mengyuan Li, Miaomiao Zhang, Ke Fan, Qi Qi, Lin Zhang, Xin‐Yao Yu   +6 more
wiley   +1 more source

New chaos function of composition function Gauss map and dyadic transformation map for digital image encryption [PDF]

ITM Web of Conferences
Encryption algorithms mostly use key-streams generated from random number generators. Several recent studies have shown that the random number generator used is a chaos function.
Mudrika Mudrika, Mt Suryadi, Madenda Sarifuddin   +2 more
doaj   +1 more source