Results 121 to 130 of about 1,024,399 (337)

Inflation with Holographic Dark Energy

, 2007
We investigate the corrections of the holographic dark energy to inflation paradigm. We study the evolution of the holographic dark energy in the inflationary universe in detail, and carry out a model-independent analysis on the holographic dark energy ...
Chen, Bin, Li, Miao, Wang, Yi
core   +2 more sources

MAGTWIST: A Magnetically‐Driven Rotary Actuator Using a Traveling‐Wave With Integrated Stiffness Tunability

Advanced Functional Materials, EarlyView.
MAGTWIST: A compact magnetic rotary actuator, enabling smooth, stepless rotation, and on‐demand locking. Inspired by peristalsis, a soft polymer belt generates a traveling‐wave, enabling 270° rotation when heated. Cooling stiffens the belt, locking it in position and enabling it to withstand high loads.
Simon Frieler, Jean‐Paul P.M. de Vries, Sarthak Misra, Venkatasubramanian Kalpathy Venkiteswaran   +3 more
wiley   +1 more source

Frontier Advances of Emerging High‐Entropy Anodes in Alkali Metal‐Ion Batteries

Advanced Functional Materials, EarlyView.
Recent advances in microscopic morphology control of high‐entropy anode materials for alkali metal‐ion batteries. Abstract With the growing demand for sustainable energy, portable energy storage systems have become increasingly critical. Among them, the development of rechargeable batteries is primarily driven by breakthroughs in electrode materials ...
Liang Du, Kaidi Zhang, Liang Wang, Di Zhao, Mengqing Hu, Mingli Li, Ming Zhou, Zhenzhen Wu, Mengyang Dong, Bo Fu, Porun Liu, Yun Wang, Hongxia Wang, Yuantong Gu, Lei Zhang   +14 more
wiley   +1 more source

Analyzing coherent structures in the tropical cyclone boundary layer using large eddy simulations

Tropical Cyclone Research and Review
Turbulence within the tropical cyclone boundary layer plays a crucial role in the exchange of heat, moisture, and momentum between the surface and the atmosphere.
Shanghong Wang, Jie Tang
doaj   +1 more source

Curvaton Dynamics

, 2003
In contrast to the inflaton's case, the curvature perturbations due to the curvaton field depend strongly on the evolution of the curvaton before its decay. We study in detail the dynamics of the curvaton evolution during and after inflation. We consider
de Austri, Roberto Ruiz, Dimopoulos, Konstantinos, Lazarides, George, Lyth, David   +3 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

Ultrasound‐Triggered Gelation for Restoring Biomechanical Properties of Degenerated Functional Spinal Units

Advanced Healthcare Materials, EarlyView.
This study introduces an innovative approach to treating intervertebral disc degeneration using ultrasound‐triggered in situ hydrogel formation. Proof‐of‐concept experiments using optimized biomaterial and ultrasound parameters demonstrate partial restoration of biomechanical function and successful integration into degenerated disc tissue, offering a ...
Veerle A. Brans, Anna P. Constantinou, Matthew J. Kibble, Valeria Nele, Daniel Reumann, Luca Bau, Sebastien J. P. Callens, James P. K. Armstrong, Nicolas Newell, Constantin C. Coussios, Molly M. Stevens, Michael D. Gray   +11 more
wiley   +1 more source

Preliminary Study of a Ninj1‐Loaded Bimodal Ultrasound/NIR Fluorescence Targeted Molecular Probe for Diagnosing Early‐Stage Inflammation in Coronary Microvascular Dysfunction

Advanced Healthcare Materials, EarlyView.
Coronary microvascular dysfunction (CMD) targeting remains a challenge for precise diagnosis. This work presents a dual‐modal nanoprobe (T‐IR780‐NBs) that combines ultrasound contrast with near‐infrared fluorescence. This technology utilizes proteomics‐derived antibodies that specifically localize to inflamed and injured cardiac tissue, enabling ...
Xiaohui Xu, Lina Guan, Baihetiya Tayier, Chen Yuan, Shangke Chen, Qi Shi, Yuming Mu   +6 more
wiley   +1 more source

A Statistical Approach to Multifield Inflation: Many-field Perturbations Beyond Slow Roll

, 2012
We study multifield contributions to the scalar power spectrum in an ensemble of six-field inflationary models obtained in string theory. We identify examples in which inflation occurs by chance, near an approximate inflection point, and we compute the ...
A. Achucarro, A. Achucarro, A. Avgoustidis, A. Avgoustidis, A. Krause, A.A. Starobinsky, A.A. Starobinsky, B.J.W. van Tent, C.M. Peterson, D. Baumann, D. Baumann, D. Baumann, D. Langlois, D. Langlois, D. Langlois, D. Seery, D.A. Easson, D.J. Mulryne, D.J. Mulryne, Gang Xu, H.-C. Lee, H.-Y. Chen, H.-Y. Chen, J. Elliston, J. Frazer, K.-Y. Choi, Liam McAllister, M. Dias, N. Agarwal, R. Bean, S. Cespedes, S. Cremonini, S. Groot Nibbelink, S. Kachru, S. Pi, S. Renaux-Petel, S. Renaux-Petel, S. Renaux-Petel, S. Weinberg, Sébastien Renaux-Petel, X. Chen, X. Chen, X. Gao, X. Gao, Z. Lalak   +44 more
core   +1 more source

Thin layer flow and film decay modeling for grease lubricated rolling bearings

Tribology International, 2012
A model is presented to predict lubricant supply layer changes on tracks in rolling bearings due to centrifugal forces and elastohydrodynamic contact pressure. Experimental validation is shown for centrifugal force driven free surface flow, and layer thickness (film thickness) decay in single elastohydrodynamically lubricated contacts. The model allows
Venner, C.H., van Zoelen, M.T., Lugt, P.M.   +2 more
openaire   +2 more sources