Results 41 to 50 of about 407,112 (281)

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

Magnetic‐Field Dependent VB− Spin Decoherence in Hexagonal Boron Nitrides: A First‐Principles Study

Advanced Functional Materials, EarlyView.
This study investigates the decoherence of the VB− defect in h‐BN under external magnetic fields using first‐principles quantum many‐body simulations. A transition boundary distinguishing distinct decoherence regimes is identified, with its dependence on isotopic composition.
Jaewook Lee, Hyeonsu Kim, Huijin Park, Hosung Seo   +3 more
wiley   +1 more source

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  

NUT-Charged Black Holes in Gauss-Bonnet Gravity

, 2005
We investigate the existence of Taub-NUT/bolt solutions in Gauss-Bonnet gravity and obtain the general form of these solutions in $d$ dimensions. We find that for all non-extremal NUT solutions of Einstein gravity having no curvature singularity at $r=N$,
A. H. Taub, D. Lust, J. Polchinski, M. H. Dehghani, M. B. Greens, R. B. Mann   +5 more
core   +2 more sources

Smarter Sensors Through Machine Learning: Historical Insights and Emerging Trends across Sensor Technologies

Advanced Functional Materials, EarlyView.
This review highlights how machine learning (ML) algorithms are employed to enhance sensor performance, focusing on gas and physical sensors such as haptic and strain devices. By addressing current bottlenecks and enabling simultaneous improvement of multiple metrics, these approaches pave the way toward next‐generation, real‐world sensor applications.
Kichul Lee, Osman Gul, Yeongjae Kwon, Jaeseok Jeong, Seokjoo Cho, Jihyeon Ahn, Jehee Yu, Cheolmin Kim, Donho Lee, Hyeonseok Han, Byeongju Lee, Jungrak Choi, Ji‐Hwan Ha, Yongrok Jeong, Kyungnam Kang, Ali Javey, Junseong Ahn, Inkyu Park   +17 more
wiley   +1 more source

AUTONOMOUS WHEELED ROBOT PLATFORM TESTBED FOR NAVIGATION AND MAPPING USING LOW-COST SENSORS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
This paper presents the concept of an architecture for a wheeled robot system that helps researchers in the field of geomatics to speed up their daily research on kinematic geodesy, indoor navigation and indoor positioning fields.
D. Calero, E. Fernandez, M. E. Parés
doaj   +1 more source

Spatio-Temporal Quality Indicators for Differential Interferometric Synthetic Aperture Radar Data

Remote Sensing, 2022
Satellite-based interferometric synthetic aperture radar (InSAR) is an invaluable technique in the detection and monitoring of changes on the surface of the earth.
Yismaw Wassie, S. Mohammad Mirmazloumi, Michele Crosetto, Riccardo Palamà, Oriol Monserrat, Bruno Crippa   +5 more
doaj   +1 more source

Perturbations of Gauss-Bonnet Black Strings in Codimension-2 Braneworlds

, 2011
We derive the Lichnerowicz equation in the presence of the Gauss-Bonnet term. Using the modified Lichnerowicz equation we study the metric perturbations of Gauss-Bonnet black strings in Codimension-2 Braneworlds.Comment: 26 pages, no figures, clarifying ...
A Chamblin, A Higuchi, A Ishibashi, A Molina, B Cuadros-Melgar, B Cuadros-Melgar, B Cuadros-Melgar, B Zumino, B Zwiebach, Bertha Cuadros-Melgar, C Barcelo, C Charmousis, C Charmousis, C Garraffo, C Martinez, D Kiley, D Lovelock, DG Boulware, DJ Gross, DL Wiltshire, DL Wiltshire, E Papantonopoulos, E Papantonopoulos, Eleftherios Papantonopoulos, G Dotti, G Dotti, G Gibbons, G Gibbons, H Kodama, H Kodama, H Kodama, H-P Nilles, I Navarro, J Crisostomo, JM Cline, JT Wheeler, JT Wheeler, L-h Liu, M Bañados, M Bañados, M Beroiz, M Henneaux, Minas Tsoukalas, N Kaloper, N Kaloper, NA Obers, P Bostock, P Candelas, P Gonzalez, R Aros, R Emparan, R Emparan, R Gregory, R Gregory, RA Konoplya, RJ Gleiser, RM Wald, S Chen, T Harmark, T Takahashi, T Takahashi, T Takahashi, T Takahashi, UA Binni al, V Cardoso, Vassilios Zamarias, Y Aghababaie, Y Brihaye   +67 more
core   +1 more source

Quantum‐Grade Nanodiamonds from a Single‐Step, Industrial‐Scale Pressure and Temperature Process

Advanced Functional Materials, EarlyView.
Novel method for creation of nitrogen‐vacancy centers in 50‐nm nanodiamonds based on high‐temperature plastic deformation is demonstrated. Compared to the electron irradiation approach, it yields nitrogen‐vacancy centers with significantly improved charge stability, T1 relaxation time, and optical Rabi contrast.
Yahua Bao, Michal Gulka, Parkarsh Kumar, Jakub Copak, Priyadharshini Balasubramanian, Yuliya Mindarava, Rémi Blinder, Michael Olney‐Fraser, Haotian Wen, Hana Spanielova, Helen Zhi Jie Zeng, Benjamin Whitefield, Igor Aharonovich, Jaroslav Hruby, Fedor Jelezko, J. Daniel Belnap, Shery L. Y. Chang, Petr Cigler   +17 more
wiley   +1 more source

Position-Based Transceiver Design for Multiple Satellite to VSAT Downlink

IEEE Open Journal of the Communications Society
We propose a novel approach for downlink transmission from a satellite swarm towards a very small aperture terminal (VSAT). These swarms have the benefit of much higher spatial separation in the transmit antennas than traditional satellites with antenna ...
Maik Roper, Bho Matthiesen, Dirk Wubben, Petar Popovski, Armin Dekorsy   +4 more
doaj   +1 more source