Results 61 to 70 of about 85,825 (273)

Non‐Equilibrium Synthesis Methods to Create Metastable and High‐Entropy Nanomaterials

Advanced Science, EarlyView.
ABSTRACT Stabilizing multiple elements within a single phase enables the creation of advanced materials with exceptional properties arising from their complex composition. However, under equilibrium conditions, the Hume–Rothery rules impose strict limitations on solid‐state miscibility, restricting combinations of elements with mismatched crystal ...
Shuo Liu, Chaochao Dun, Jeffrey J. Urban, Mark T. Swihart   +3 more
wiley   +1 more source

Design, Control, and Clinical Applications of Magnetic Actuation Systems: Challenges and Opportunities

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This review aims to provide a broad understanding for interdisciplinary researchers in engineering and clinical applications. It addresses the development and control of magnetic actuation systems (MASs) in clinical surgeries and their revolutionary effects in multiple clinical applications.
Yingxin Huo, Lidong Yang, Tiantian Xu, Dong Sun   +3 more
wiley   +1 more source

Quantum Reduced Loop Gravity [PDF]

Proceedings of Frontiers of Fundamental Physics 14 — PoS(FFP14), 2016
Quantum Reduced Loop Gravity provides a promising framework for a consistent characterization of the early Universe dynamics. Inspired by BKL conjecture, a flat Universe is described as a collection of Bianchi I homogeneous patches. The resulting quantum dynamics is described by the scalar constraint operator, whose matrix elements can be analytically ...
ALESCI, Emanuele, Cianfrani, F.
openaire   +3 more sources

Introduction to Loop Quantum Cosmology

Symmetry, Integrability and Geometry: Methods and Applications, 2012
This is an introduction to loop quantum cosmology (LQC) reviewing mini- and midisuperspace models as well as homogeneous and inhomogeneous effective dynamics.
Kinjal Banerjee, Gianluca Calcagni, Mercedes Martín-Benito   +2 more
doaj   +1 more source

Bouncing evolution in a model of loop quantum gravity

, 2019
To understand the dynamics of loop quantum gravity, the deparametrized model of gravity coupled to a scalar field is studied in a simple case, where the graph underlying the spin network basis is one loop based at a single vertex.
Lewandowski, Jerzy, Li, Haida, Ma, Yongge, Zhang, Cong   +3 more
core   +1 more source

Magnetic Field Control Using an Electromagnetic Actuation System with Combined Air‐Core and Metal‐Core Coils

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
An electromagnetic manipulation system enhances magnetic field strength in the Z‐direction for 3D control of microrobots and nanoparticles. Featuring eight metal‐core coils and two air‐core coils arranged hemispherically, it ensures unimpeded workspace access and integrates imaging tools.
Nader Latifi Gharamaleki, Dong‐in Kim, Gyudong Lee, Jin‐Young Kim, Hongsoo Choi   +4 more
wiley   +1 more source

Big Crunch Avoidance in k = 1 Semi-Classical Loop Quantum Cosmology [PDF]

, 2003
It is well known that a closed universe with a minimally coupled massive scalar field always collapses to a singularity unless the initial conditions are extremely fine tuned. We show that the corrections to the equations of motion for the massive scalar
A. Ashtekar, A.A. Starobinsky, A.V. Toporensky, A.Yu. Kamenshchik, Alexey Toporensky, B. Bassett, C.L. Bennett, C.R. Nappi, D.N. Page, D.N. Spergel, F. Hinterleitner, G. Ellis, G.M. Hossain, J. Hovbedo, J. Khoury, J. Khoury, J.C. Fabris, M. Bojowald, M. Bojowald, M. Bojowald, M. Bojowald, M. Bojowald, M. Bojowald, M. Bojowald, M. Bojowald, M. Bojowald, M. Bojowald, M. Gasperini, M. Turner, N. Kanekar, N.J. Cornish, P. Kanti, Parampreet Singh, R. Kallosh, S. Elitzur, S. Tsujikawa, S. Tsujikawa, T. Padmanabhan, T. Thiemann, V. Husain, V. Sahni, V. Sahni   +41 more
core   +3 more sources

A Novel Parameter Estimation Method for Pneumatic Soft Hand Control Applying Logarithmic Decrement for Pseudo‐Rigid Body Modeling

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
In this research, a paradigm of parameter estimation method for pneumatic soft hand control is proposed. The method includes the following: 1) sampling harmonic damping waves, 2) applying pseudo‐rigid body modeling and the logarithmic decrement method, and 3) deriving position and force control.
Haiyun Zhang, Kelvin HoLam Heung, Gabrielle J. Naquila, Ashwin Hingwe, Ashish D. Deshpande   +4 more
wiley   +1 more source

Quantum Corrections in Massive Gravity [PDF]

, 2013
We compute the one-loop quantum corrections to the potential of ghost-free massive gravity. We show how the mass of external matter fields contribute to the running of the cosmological constant, but do not change the ghost-free structure of the massive ...
de Rham, Claudia, Heisenberg, Lavinia, Ribeiro, Raquel H.   +2 more
core   +1 more source

Crater Observing Bioinspired Rolling Articulator (COBRA)

Advanced Intelligent Systems, EarlyView.
Crater Observing Bio‐inspired Rolling Articulator (COBRA) is a modular, snake‐inspired robot that addresses the mobility challenges of extraterrestrial exploration sites such as Shackleton Crater. Incorporating snake‐like gaits and tumbling locomotion, COBRA navigates both uneven surfaces and steep crater walls.
Adarsh Salagame, Henry Noyes, Eric Sihite, Arash Kalantari, Alireza Ramezani   +4 more
wiley   +1 more source