Results 111 to 120 of about 78,461 (284)

A Biologically‐Architected Wear and Damage‐Resistant Nanoparticle Coating From the Radular Teeth of Cryptochiton stelleri

Advanced Functional Materials, EarlyView.
The ultrahard teeth of mollusks that feed on rocky substrates contain a wear‐resistant coating on their surfaces consisting of densely packed mesocrystalline magnetic nanoparticles within an organic matrix. These coatings display significant hardness and toughness through their highly controlled mesocrystalline architectures.
Taifeng Wang, Yu Chen, Ezra Sarmiento, Taige Hao, Atsushi Arakaki, Michiko Nemoto, Pablo Zavattieri, David Kisailus   +7 more
wiley   +1 more source

From sources to initial data and back again: on bulk singularities in Euclidean AdS/CFT

Journal of High Energy Physics, 2020
A common method to prepare states in AdS/CFT is to perform the Euclidean path integral with sources turned on for single-trace operators. These states can be interpreted as coherent states of the bulk quantum theory associated to Lorentzian initial data ...
Alexandre Belin, Benjamin Withers
doaj   +1 more source

Wetting Interactions Between Porous Carbon Hosts and Liquid Sodium‐Potassium Alloys Toward Their Use in Negative Electrodes of Alkali‐Metal Batteries

Advanced Functional Materials, EarlyView.
Porous carbon host materials are investigated for their possible usage in liquid alkali‐metal negative electrodes. X‐ray computed tomography reveals pore‐filling behavior under various conditions: non‐wetting, forced wetting, and spontaneous wetting. The applicability of porous carbon in electrochemical cells is demonstrated at high areal capacities ...
Johannes Baller, André Hilger, Naiyu Qi, Chiara Morini, Andrea Cornelio, Arndt Remhof, Markus Osenberg, Ingo Manke, Julian Moosmann, Felix Beckmann, Gustav Graeber   +10 more
wiley   +1 more source

Fluorine‐Free Soft Nanocomposites for High‐Speed Liquid Impact Repellence

Advanced Functional Materials, EarlyView.
Fluorine‐free soft nanocomposite coatings are developed using silicone oil‐mediated mechanical‐stiffness control, enabling ‘dry’ liquid‐repellent surfaces that resist high‐speed water jet impacts up to ∼60 m/s. By tuning nanoparticle loading and oil content, the coatings also achieve >90% optical transparency, amphiphobicity with impact resistance to ...
Priya Mandal, Vikramjeet Singh, Rohit Gupta, Prasenjit Kabi, Manish K. Tiwari   +4 more
wiley   +1 more source

Unstable Giants

, 2006
We find giant graviton solutions in Frolov's three parameter generalization of the Lunin-Maldacena background. The background we study has $\tilde{\gamma}_1=0$ and $\tilde{\gamma}_2=\tilde{\gamma}_3=\tilde{\gamma}$.
E. Witten, J. Maldacena, Jelena Smolic, Milena Smolic, Norman Ives, Robert de Mello Koch, S. Corley, S. A. Frolov   +7 more
core   +1 more source

Rolling and Impacting Caustic Drops on Super Liquid‐Repellent Surfaces: In Situ Force and Energy Monitoring of Surface Degradation

Advanced Functional Materials, EarlyView.
The use of continuous drop‐based force and energy probing methods is introduced to evaluate in situ chemical degradation of super liquid‐repellent surfaces by caustic liquids. By tracking the velocity of rolling drops and energy dissipation of impacting drops, degradation dynamics are resolved under high spatio‐temporal precision. Using this technique,
Parham Koochak, Kai Liu, William S. Y. Wong   +2 more
wiley   +1 more source

D-Branes on the Conifold and N=1 Gauge/Gravity Dualities

, 2002
We review extensions of the AdS/CFT correspondence to gauge/ gravity dualities with N=1 supersymmetry. In particular, we describe the gauge/gravity dualities that emerge from placing D3-branes at the apex of the conifold.
A Brandhuber, A Buchel, A Ceresole, A Hanany, A Kehagias, A Loewy, AW Peet, C Bachas, C Bachas, CG Callan, CP Herzog, D Jatkar, D Morrison, DJ Gross, E Witten, E Witten, E Witten, EG Gimon, F Bigazzi, HJ Kim, IR Klebanov, IR Klebanov, IR Klebanov, IR Klebanov, IR Klebanov, IR Klebanov, J Maldacena, J Maldacena, J Maldacena, K Becker, K Dasgupta, K Hori, K Ohta, L Romans, LP Zayas, M Bertolini, M Bianchi, M Cvetič, M Grana, M Henningson, M Shifman, MR Douglas, MR Douglas, N Seiberg, O Aharony, O Aharony, P Candelas, R Minasian, S Gubser, S Kachru, SJ Rey, SL Adler, SS Gubser, SS Gubser, SS Gubser, SS Gubser, U Danielsson, VA Novikov   +57 more
core   +1 more source

Novel Functional Materials via 3D Printing by Vat Photopolymerization

Advanced Functional Materials, EarlyView.
This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov, Patrick Fesser, Boris A. Bulgakov, Ulrich S. Schubert   +3 more
wiley   +1 more source

Emergent gravity/Non-linear U(1) gauge theory correspondence [PDF]

, 2010
Kaluza-Klein gravity is revisted, with renewed interest, in a type IIB string theory on $S^1\times K3$. The irreducible curvature tensors are worked out in the, T-dual, emergent gravity in 4D to yield a non-linear U(1) gauge theory.
Kar, Supriya, Pandey, K. Priyabrat, Singh, Abhishek K., Singh, Sunita   +3 more
core  

Learning the Alpha-bits of black holes

Journal of High Energy Physics, 2019
When the bulk geometry in AdS/CFT contains a black hole, boundary subregions may be sufficient to reconstruct certain bulk operators if and only if the black hole microstate is known, an example of state dependence.
Patrick Hayden, Geoffrey Penington
doaj   +1 more source