Results 51 to 60 of about 635,548 (284)

Thermoresponsive Liquid Crystalline Polymer Coatings Programmed by Field‐Induced Topological Defects for Tunable Optical and Topographical Responses

Advanced Functional Materials, EarlyView.
Resonant standing waves generate large‐area lattices of liquid‐crystal topological defects that are permanently encoded into polymer coatings by photopolymerization. The preserved director architecture produces thermally reconfigurable surface topographies while maintaining programmable optical functionality, demonstrating a scalable strategy for ...
Jacques A. Peixoto, Mufeeduzaman Chavilkkadan, Alexander Fusi, Marko Beslać, Dirk J. Broer, Etienne Brasselet, Danqing Liu   +6 more
wiley   +1 more source

Compensation of Horizontal Gravity Disturbances for High Precision Inertial Navigation [PDF]

Sensors, 2018
Horizontal gravity disturbances are an important factor that affects the accuracy of inertial navigation systems in long-duration ship navigation. In this paper, from the perspective of the coordinate system and vector calculation, the effects of horizontal gravity disturbance on the initial alignment and navigation calculation are simultaneously ...
Junbo Tie, Juliang Cao, Meiping Wu, Junxiang Lian, Shaokun Cai, Lin Wang   +5 more
openaire   +3 more sources

CO2‐to‐CO Conversion in a Gas‐Fed, Zero‐Gap, PEM Electrolyzer Enabled by Polycations and Nitrogen‐Doped Carbon‐Supported Cobalt Nanoparticles

Advanced Functional Materials, EarlyView.
A gas‐fed, zero‐gap, PEM CO2 electrolyzer is realized by incorporating PDDA+ ions onto the carbonaceous Co/N‐C electrocatalyst, with gaseous H2 and CO2 fed into the anode and cathode, respectively. Operating without an aqueous electrolyte, the system sustains a peak FECO of 65.1% at 100 mA cm−2. ABSTRACT Electrochemical carbon dioxide reduction (ECO2R)
Yuen Leong Chow, Hsi‐Wen Wu, Aimin Li, Yalou Guo, Duhong Chen, Jie Zhang, Paul A. Webley   +6 more
wiley   +1 more source

Gravity and Gauge [PDF]

, 2012
Philosophers of physics and physicists have long been intrigued by the analogies and disanalogies between gravitational theories and (Yang-Mills-type) gauge theories.
Teh, Nicholas
core  

Magnetically Driven Biofabrication for Tissue Engineering: From Nanoparticle Design to Mag‐ATMP Translation

Advanced Healthcare Materials, EarlyView.
Magnetically responsive nanoparticles enable remote control over biomaterials, cells, and engineered tissues. This review summarizes material design, biological safety, fabrication and actuation strategies, computational validation, and translational pathways that support the development of magnetic tissue‐engineering platforms and future magnetically ...
Konstantinos Ioannidis, Dimitrios Lefas, Maya Guilliams, Jackie Van Grootenbril, Isaak Decoene, Dimitrios Sakellariou, Bart Smeets, Stefanos Mourdikoudis, Ioannis Papantoniou   +8 more
wiley   +1 more source

Design and Control Strategy of a Non-Gravity Axes Tracking System for a Rigid Suspension-Type Astronaut Operational Training System

Actuators
Low-gravity and microgravity simulation devices for training astronauts to manipulate objects under terrestrial conditions are critical for improving operational performance and efficiency in extraterrestrial environments while minimizing risk.
Zhenhan Wang, Lixun Zhang, Feng Xue, Yuhe Fan, Bendong Xian   +4 more
doaj   +1 more source

Renormalization group flow of f(R)-gravity [PDF]

, 2008
We use the functional renormalization group equation for quantum gravity to construct a non-perturbative flow equation for modified gravity theories of the form $S = \int d^dx \sqrt{g} f(R)$.
Afd Theoretical Physics (ITF), Saueressig, F., Machado, P.F., Dep Natuurkunde, Quantum Gravity, Strings and Elementary Particles   +4 more
core  

Quantum Gravity: Motivations and Alternatives [PDF]

, 2009
The mutual conceptual incompatibility between General Relativity and Quantum Mechanics / Quantum Field Theory is generally seen as the most essential motivation for the development of a theory of Quantum Gravity.
Hedrich, Reiner
core   +1 more source

Bioinspired Adaptive Surfaces for Intelligent Liquid Manipulation: Progressing From Passive and Active to Hybrid Strategies

Advanced Materials, EarlyView.
This review examines passive, active, and hybrid liquid manipulation strategies, highlighting hybrid approaches as an emerging route to reconcile energy efficiency with adaptive control. By actively reconstructing passive surfaces to store programmable interfacial energy, hybrid systems enable flexible yet low‐power liquid transport, with perspectives ...
Jiaqi Miao, Yiyuan Zhang, Liqiu Wang, Alan C. H. Tsang   +3 more
wiley   +1 more source

A New Combination Approach for Gibbs Phenomenon Suppression in Regional Validation of Global Gravity Field Model: A Case Study in North China

Remote Sensing
A global gravity field model (GGM) is essential to be validated with ground-based or airborne observational data for the accurate application of the GGM at a regional scale.
Yingchun Shen, Wei Feng, Meng Yang, Min Zhong, Wei Tian, Yuhao Xiong, Zhongshan Jiang   +6 more
doaj   +1 more source