Results 121 to 130 of about 32,973 (309)

Redirecting Excited‐State Proton Transfer Through Supramolecular Polymerization in Nanoconfinement

Angewandte Chemie, EarlyView.
Supramolecular confinement redirects the excited‐state proton transfer pathway of an amphoteric emitter. In water, the molecule undergoes ESPD, whereas co‐assembly with γ‐cyclodextrin forms nanotubes that template slip‐stacked emitter pairs and enable ESIMPT. Structural and photophysical characterization of the assemblies shows that the preorganization
Luis C. Pantaleone, Robert Hutchings, Bente Reus, Jacopo Martinelli, Alessia Lasorsa, Patrick C. A. van der Wel, Marc C. A. Stuart, Wesley R. Browne, Tibor Kudernac   +8 more
wiley   +2 more sources

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  

Generalized Task‐Driven Design of Soft Robots via Reduced‐Order Finite Element Method‐Based Surrogate Modeling

Advanced Intelligent Systems, EarlyView.
A unified, reusable modeling pipeline enables task‐driven design of soft robots across actuator families and task scenarios. High‐fidelity simulations are compressed into compact pseudo‐rigid‐body joint surrogates, while a design‐conditioned meta‐model generates new surrogates from geometry parameters without rerunning finite element method.
Yao Yao, David Howard, Perla Maiolino
wiley   +1 more source

Light‐Activated Isolation of High‐Quality Mitochondria for Therapeutic Transplantation

Angewandte Chemie, EarlyView.
The Light‐Activated Mitochondrial Isolation (LAMI) platform enables the selective and non‐destructive isolation of high‐purity, metabolically active mitochondria. By integrating modular, ligand‐programmable magnetic probes with photo‐cleavable release, LAMI overcomes long‐standing limitations of conventional isolation methods and provides a robust ...
Hui Liu, Yuxin Jiao, Ting Zhang, Haiwei Wang, Yufei Xue, Jiayu Ding, Yang Ding, Meiling Wang, Weisen Zhang, Hua Bai, Bo Peng, Nicolas H. Voelcker, Lin Li   +12 more
wiley   +2 more sources

Aspects of Quantum Gravity Phenomenology and Astrophysics

, 2023
With the discovery of gravitational waves, the search for the quantum of gravity, the graviton, is imminent. We discuss the current status of the bounds on graviton mass from experiments as well as the theoretical understanding of these particles.
José Fajardo-Montenegro, Arundhati Dasgupta   +1 more
core   +1 more source

Infinities in Quantum Gravities

Annalen der Physik, 2000
Abstract We first present a review, intended for classical relativists, of the ultraviolet difficulties faced by local quantum gravity theories in both the usual Einstein versions and in their supergravity extensions, at least perturbatively.
openaire   +3 more sources

Speckle Skin‐Based Multimodal Tactile Perception for Fine Robotic Manipulation

Advanced Intelligent Systems, EarlyView.
SpeckleTac, a miniature vision‐based tactile sensor, utilizes a speckle‐pattern skin and optical flow‐based scalable virtual marker tracking. Combined with advanced algorithms, it achieves high‐resolution 3D surface reconstruction, precise contact perception, and stable grasping capabilities.
Jiayuan Zhang, Chong Wang, Yingao Xu, Shihan Wang, Houping Wu, Yulian Peng, Hongbo Wang   +6 more
wiley   +1 more source

Temperature‐ and Light‐Regulated Liquid Crystal Smart Window for Dynamic Control of Daylight and Solar Heat in All‐Weather Conditions

Angewandte Chemie, EarlyView.
An environmentally adaptive smart window based on the interplay of light‐driven molecular motors and liquid crystal (LC) polymers is developed. The window can dynamically switch among three distinct working states: transparent, reflective, and scattering, depending on ambient temperature and solar light intensity, enabling excellent modulation of ...
Yang Zhang, Ying Wu, Wenxuan Liu, Xin Wang, Dirk J. Broer, Ben L. Feringa, Jiawen Chen   +6 more
wiley   +2 more sources

Probing evaporating black holes with modular flow in SYK

Journal of High Energy Physics
We study the effect of modular flow on correlation functions of fermions in the Sachdev-Ye-Kitaev (SYK) model coupled weakly to a bath, which we take to be another SYK model.
Nicolò Bragagnolo, S. Prem Kumar
doaj   +1 more source

(2+1) gravity for higher genus in the polygon model

, 2004
We construct explicitly a (12g − 12)-dimensional space P of unconstrained and independent initial data for ’t Hooft’s polygon model of (2+1) gravity for vacuum spacetimes with compact genus-g spacelike slices, for any g ≥ 2.
Kádár, Zoltán, Kadar, Z., Dep Natuurkunde, Quantum Gravity, Strings and Elementary Particles, Loll, R., Universiteit Utrecht   +5 more
core   +1 more source