Results 61 to 70 of about 88,964 (204)

Geometry of crossing null shells

, 2003
New geometric objects on null thin layers are introduced and their importance for crossing null-like shells are discussed. The Barrab\`es--Israel equations are represented in a new geometric form and they split into decoupled system of equations for two ...
Ashtekar, Barrabès, Belinfante, Belinfante, Dirac, Dray, Hájı́ček, Hájı́ček, Hájı́ček, Hájı́ček, Hájı́ček, Hájı́ček, Hájı́ček, Israel, Israel, Jacek Jezierski, Jezierski, Jezierski, Kijowski, Kijowski, Kijowski, Kijowski, Kouletsis, Louko, Magli, Mars, Raychaudhuri, Redmount, Taub   +28 more
core   +2 more sources

Transforming Cellulose Into Functional Three‐Dimensional Structures

Advanced Functional Materials, EarlyView.
Cellulose is promising for replacing synthetic polymers due to its excellent mechanical properties and low cost. This review highlights the recent advancements in transforming cellulose into functional 3D structures, including liquid gels and porous materials.
Xia Sun, Hao Sun, Penghui Zhu, Yonggang Wu, Anna Palmer, Feng Jiang   +5 more
wiley   +1 more source

Topological regularization and self-duality in four-dimensional anti-de Sitter gravity

, 2009
It is shown that the addition of a topological invariant (Gauss-Bonnet term) to the anti-de Sitter (AdS) gravity action in four dimensions recovers the standard regularization given by holographic renormalization procedure.
C. Fefferman, E. Witten, J. M. Maldacena, Olivera Mišković, Rodrigo Olea   +4 more
core   +1 more source

Highly Sensitive Cuffless Blood Pressure Monitoring with Selective Laser‐Sintered Liquid Metal Conductors

Advanced Functional Materials, EarlyView.
A soft, compact, and cuffless system for continuous blood pressure monitoring using laser‐sintered liquid metal conductors is developed. The stretchability and sensitivity of the device enable real‐time, non‐invasive tracking of blood pressure, including recovery after exercise. This wearable device offers a practical solution for managing hypertension
Jung Jae Park, Sangwoo Hong, Yeongju Jung, Phillip Won, Carmel Majidi, Minwoo Kim, Seung Hwan Ko   +6 more
wiley   +1 more source

Vacuum type I spacetimes and aligned Papapetrou fields: symmetries

, 2003
We analyze type I vacuum solutions admitting an isometry whose Killing 2--form is aligned with a principal bivector of the Weyl tensor, and we show that these solutions belong to a family of type I metrics which admit a group $G_3$ of isometries. We give
, Barnes A, Bel L, Bell P, Brans C H, Brans C H, Debever R, Debney G C, Debney G C, Edgar S B, Edgar S B, Fayos F, Fayos F, Fayos F, Ferrando J J, Ferrando J J, Ferrando J J, Ferrando J J, Ferrando J J, Ferrando J J, Ferrando J J Sáez J A, Ferrando J J Sáez J A, Ferrando J J Sáez J A, Ferrando J J Sáez J A, Joan Josep Ferrando, Juan Antonio Sáez, Ludwig G, Mars M, McIntosh C B G, McIntosh C B G, McIntosh C B G, McIntosh C B G, Papapetrou A, Petrov A Z, Shepley L C, Steele J D, Stephani E, Szekeres P   +37 more
core   +3 more sources

Substrate Engineering for Durable Omniphobic Liquid‐Like Surfaces

Advanced Functional Materials, EarlyView.
The significant yet less investigated role of substrates in determining the liquid‐repellency and mechanical durability of liquid‐like surfaces (LLSs) is explored. Thick and crack‐free sol–gel silica intermediary layers are developed that can smoothen substrate asperity roughness even at the micron scale, enabling omniphobic polydimethylsiloxane‐based ...
Tao Wen, Isaac J. Gresham, Rafaela Aguiar, Sudip K. Lahiri, Patrick C. Lee, Chiara Neto, Kevin Golovin   +6 more
wiley   +1 more source

High Performance Room Temperature Multiferroic Properties of w‐MnSe Altermagnet

Advanced Functional Materials, EarlyView.
Using first‐principles calculations, for the first time the Altermagneto‐Ferroelectric Coupling Effect (AFCE) is proposed, which enables control of both electric polarization and spin splitting in the band structure due to polyhedral rotations. This uncovers robust multiferroicity in wurtzite MnSe at room temperature, offering an exciting route for ...
Djamel Bezzerga, Imran Khan, Jisang Hong
wiley   +1 more source

Transducer Materials Mediated Deep Brain Stimulation in Neurological Disorders

Advanced Functional Materials, EarlyView.
This review discusses advanced transducer materials for improving deep brain stimulation (DBS) in neurological disorders. These materials respond to light, ultrasound, or magnetic fields, enabling precise, less invasive neuromodulation. Their stimulus‐responsive properties enhance neural control and adaptive therapy, paving the way for next‐generation ...
Di Zhao, Zhengyang Cao, Guangjun Zhong, Limin Shi, Junxia Xie, Jianhua Hao   +5 more
wiley   +1 more source

High‐Performance Field‐Effect Transistors and Phototransistors Array Based on Solution‐Processed Quasi‐1D Van der Waals Ta2Pd3S8 Crystals

Advanced Functional Materials, EarlyView.
Herein, the synthesis of Ta₂Pd₃S₈ nanowires is reported via scalable liquid cascade exfoliation and their integration into high‐mobility field‐effect transistors (FETs) and sensitive photodetectors, achieving carrier mobility of up to 27.3 cm2 V⁻¹ s⁻¹ and responsivities of 322.40 A W⁻¹ and 1.85 mA W⁻¹ for single nanowire and network devices ...
Kyung Hwan Choi, Bom Lee, Jinsu Kang, Byung Joo Jeong, Sooheon Cho, Sang Hoon Lee, Dahoon Kim, Yeong Hyeop Kim, Jongwha Chang, Hyung‐Suk Oh, Ji‐Hee Kim, Jae‐Hyun Lee, Hak Ki Yu, Jae‐Young Choi   +13 more
wiley   +1 more source

Probing Early Particle‐Cell Membrane Interactions via Single‐Cell and Single‐Particle Interaction Analysis

Advanced Functional Materials, EarlyView.
The pre‐internalization phase of endocytosis remains poorly characterized at single‐cell levels. Single‐cell pre‐internalization mechanics are investigated using advanced robotic techniques. Cancer cells exhibit biphasic adhesion – rapid initial binding followed by reinforcement – while fibroblasts show gradual engagement.
Houari Bettahar, Christos Tapeinos, Oğulcan Işıtman, Carmine D'Amico, Alexandra Correia, Hélder A. Santos, Quan Zhou   +6 more
wiley   +1 more source