Results 71 to 80 of about 1,337,825 (313)

EVOLUTION OF A STRING NETWORK IN BACKGROUNDS WITH ROLLING HORIZONS [PDF]

, 1995
We discuss the temporal variation of the equation of state of a classical string network, evolving in a background in which the Hubble radius 1/H shrinks to a minimum and then re-expands to infinity.
Gasperini, M., Giovannini, M., Meissner, K. A., Veneziano, G.   +3 more
core   +1 more source

String and M-theory: answering the critics

, 2011
Using as a springboard a three-way debate between theoretical physicist Lee Smolin, philosopher of science Nancy Cartwright and myself, I address in layman's terms the issues of why we need a unified theory of the fundamental interactions and why, in my ...
A. Garrett Lisi, J. Distler, J. Maldacena, L. Borsten, L. Smolin, M. Duff, M. Duff, M. Duff, M. Hanlon, M. J. Duff, M.J. Duff, P. Woit   +11 more
core   +1 more source

Impact of Nanoparticle Stiffness on Endosomal Escape and Signaling Pathways in Cytosolic Delivery

Advanced Healthcare Materials, EarlyView.
Nanoparticle (NP) stiffness affects cellular uptake, but its impact on intracellular distribution remains unclear. This study synthesizes silica nanocapsules with varying stiffness, inspired by viral mechanisms, and applies assays to measure cellular uptake and escape efficiency.
Yali Zhang, Yue Hui, Zichao Guo, Dawei Liu, Yun Liu, Huajian Gao, Chun‐Xia Zhao   +6 more
wiley   +1 more source

Advanced Electrode Materials for Efficient Hydrogen Production in Protonic Ceramic Electrolysis Cells

Advanced Materials, EarlyView.
Protonic ceramic electrolysis cells (PCECs) are a promising intermediate‐temperature hydrogen production technology, leveraging high proton conductivity in electrolytes yet constrained by insufficient catalytic activity and interfacial instability in fuel/air electrodes. This review systematically categorizes advanced electrode materials and critically
Zhipeng Liu, Lilin Zhang, Chunyue Joey Zheng, Yuan Zhang, Bin Chen, Zongping Shao, Jingjie Ge   +6 more
wiley   +1 more source

The Spatial String Tension in the Deconfined Phase of SU(N) Gauge Theory and Gauge/String Duality

, 2007
The spatial string tension of a SU(N) gauge theory without quarks is calculated using gauge/string duality for 1 ...
Agasian, Andreev, Andreev, Andreev, Bali, Borgs, Boyd, Boyd, Brandhuber, Dorn, Dorn, Dorn, Greensite, Hernandez, Maldacena, Manousakis, Oleg Andreev, Rey, Shuryak, Tannenbaum, Witten   +20 more
core   +1 more source

Additive Manufacturing of Neuromorphic Systems

Advanced Materials, EarlyView.
The crossover of additive Manufacturing (AM) and neuromorphic engineering promises a new paradigm in the fabrication of intelligent hardware—one that is sustainable, scalable, cost‐efficient, and customizable. The AM‐printed neuromorphic hardware (electronics and mechanical systems) is examined, and we discussed the technological integration.
Jiongyi Yan, Yutai Su, James P. K. Armstrong, Andrew Gleadall   +3 more
wiley   +1 more source

Rapid Glass‐Substrate Digital Light 3D Printing Enables Anatomically Accurate Stroke Patient‐Specific Carotid Artery‐on‐Chips for Personalized Thrombosis Investigation

Advanced Materials, EarlyView.
A rapid glass‐substrate 3D microfabrication method creates anatomically accurate carotid artery‐on‐a‐chip models from stroke patient scans in 2 h. These miniaturized devices replicate patient‐specific blood vessel geometry and flow patterns, enabling real‐time imaging of clot formation under controlled injury.
Yunduo Charles Zhao, Zihao Wang, Arian Nasser, Allan Sun, Zhao Wang, Yingqi Zhang, Jianfang Ren, Haimei Zhao, Nicole Alexis Yap, Yinyan Wang, Zhiyong Li, Ken S Butcher, Freda Passam, Timothy Ang, Lining Arnold Ju   +14 more
wiley   +1 more source

N=2 Instanton Calculus In Closed String Background

, 2007
In this contribution we describe how to obtain instanton effects in four dimensional gauge theories by computing string scattering amplitudes in D3/D(-1) brane systems.
Billo, Marco, Frau, Marialuisa, Lerda, Alberto   +2 more
core   +1 more source

How the Arrangement of Platinum Atoms on Ruthenium Nanoparticles Improves Hydrogen Evolution Activity

Advanced Materials, EarlyView.
A synthetic strategy for the formation of Pt islands and their transformation into Pt atomic strings on Ru nanoparticle surfaces is presented. The thermodynamically favored configuration of Pt strings on Ru catalyst is demonstrated to catalyze HER via the faster Volmer–Tafel pathway with a significantly improved intrinsic activity, owing to the well ...
Qinyu Li, Soshan Cheong, Agus R. Poerwoprajitno, Shuting Xiang, Anatoly I. Frenkel, Yuwei Yang, Nicholas M. Bedford, Sohaib Umer, Martina Lessio, Ichiro Ohnishi, Zeno R. Ramadhan, Dale L. Huber, Liming Dai, Wolfgang Schuhmann, J. Justin Gooding, Richard D. Tilley   +15 more
wiley   +1 more source

Immersed Halide Perovskite‐Based Electrochemical Cells for Stable Solar Water Splitting: Achievements, Opportunities, and Prospects

Advanced Materials, EarlyView.
Halide perovskites are promising photoabsorbers in solar water‐splitting devices owing to their outstanding optoelectronic properties. This review summarizes advances in encapsulation techniques and material engineering strategies to enhance efficiency and device stability.
Wooyong Jeong, Juwon Yun, Gyumin Jang, Chang‐Seop Jeong, Jooho Moon   +4 more
wiley   +1 more source