Results 51 to 60 of about 475 (163)
Matching the Vilkovisky–DeWitt Effective Action of Quantum Gravity to String Theory
Fortschritte der Physik, Volume 72, Issue 12, December 2024.Abstract In this work, the matching of the Vilkovisky–DeWitt effective action of quantum gravity is discussedwith an example of an ultra‐violet complete theory of quantum gravity. The authors show how this matching enables a calculation of the local Wilson coefficients of the effective action. Several examples in string theory are provided.
Xavier Calmet +3 more
wiley +1 more source
Phase detection with neural networks: interpreting the black box
New Journal of Physics, 2020 Neural networks (NNs) usually hinder any insight into the reasoning behind their predictions. We demonstrate how influence functions can unravel the black box of NN when trained to predict the phases of the one-dimensional extended spinless Fermi–Hubbard
Anna Dawid +4 more
doaj +1 more source
Decoupled High‐Mobility Graphene on Cu(111)/Sapphire via Chemical Vapor Deposition
Advanced Materials, Volume 36, Issue 44, November 1, 2024.The growth via chemical vapor deposition of decoupled graphene on crystalline Cu(111) films deposited on sapphire is introduced. The resulting graphene is lying atop a thin Cu2O layer and is charge neutral, low strained, and easy to transfer. Electrical transport measurements reveal excellent room temperature carrier mobilities, exceeding 105 cm2 V−1 s−
Zewdu M. Gebeyehu +15 more
wiley +1 more source
Advanced Electronic Materials, Volume 10, Issue 9, September 2024.Using low doses of helium ions, researchers enhanced single‐layer MoS2 conductivity by inducing defects and altering substrate charge. Substrate type notably influenced defect creation. It is concluded that device property changes resulted mostly from ion‐substrate interactions, not direct ion‐MoS2 impacts. This controlled ion technique enables precise
Zahra Fekri +15 more
wiley +1 more source
Heat current control in trapped Bose–Einstein Condensates
New Journal of Physics, 2019 We investigate the heat transport and the control of heat current among two spatially separated trapped Bose–Einstein Condensates (BECs), each of them at a different temperature.
C Charalambous +3 more
doaj +1 more source
CSAC Characterization and Its Impact on GNSS Clock Augmentation Performance
Sensors, 2017 Chip Scale Atomic Clocks (CSAC) are recently-developed electronic instruments that, when used together with a Global Navigation Satellite Systems (GNSS) receiver, help improve the performance of GNSS navigation solutions in certain conditions (i.e., low ...
Enric Fernández +2 more
doaj +1 more source
New Insights Into Application Relevant Properties of Cu2+‐Doped Brushite Cements
Journal of Biomedical Materials Research Part B: Applied Biomaterials, Volume 112, Issue 9, September 2024.ABSTRACT Doping of brushite cements with metal ions can entail many positive effects on biological and physicochemical properties. Cu2+ ions are known to exhibit antibacterial properties and can additionally have different positive effects on cells as trace elements, whereas high Cu2+ concentrations are cytotoxic. For therapeutical applications of bone
Karla Spaeth +6 more
wiley +1 more source
Physik in unserer Zeit, Volume 55, Issue 5, Page 220-227, September 2024.Mit der im August 2018 gestarteten NASA‐Mission Parker Solar Probe hat erstmals eine Raumsonde die äußere Sonnenatmosphäre durchflogen. Nie zuvor hat ein menschengemachtes Objekt die Sonne quasi „berührt“. Die bisher einwandfrei funktionierende Mission hat eine Fülle neuer Daten gesammelt und die Ursprungsgebiete des Weltraumwetters erstmals direkt ...
Volker Bothmer
wiley +1 more source
4D Printing for Biomedical Applications
Advanced Materials, Volume 36, Issue 31, August 1, 2024.This article reviews four‐dimensional (4D) (bio‐)printing, highlighting its application in biomedical engineering for developing medical devices (e.g., stents, microneedles (MNs), and implants). It further explores smart biomaterials, external stimuli, and design strategies essential for the success of 4D printing.
Ebrahim Yarali +5 more
wiley +1 more source
Assessing Paleosecular Variation Averaging and Correcting Paleomagnetic Inclination Shallowing
Journal of Geophysical Research: Solid Earth, Volume 129, Issue 8, August 2024.Abstract This paper addresses one of the critical questions of scientific inquiry: How do we know when a given data set is representative of the phenomenon being examined? For paleomagnetists, the question is often whether a particular data set sufficiently averaged paleosecular variation (PSV). To this aim, we updated an existing PSV data set that now
L. Tauxe, D. Heslop, S. A. Gilder
wiley +1 more source