Results 111 to 120 of about 121,346 (292)

Plasmonic Nanomachines: Creating Local Potential Gradients and Motions

Advanced Materials, EarlyView.
Plasmonic nanomachines can generate optical, thermal, and chemical potential gradients to drive directional rectilinear, rotational, and twisting motions at the nanometer scale. The integration of multimodal plasmonic forces with functional materials and programmed structural distortions enables precise spatiotemporal actuation, thereby providing a ...
Yoonhee Kim, Soohyun Ji, Donghyun Choi, Jwa‐Min Nam   +3 more
wiley   +1 more source

Topological Point Defects in SmC* Liquid Crystals Under Mechanical Disturbance

Advanced Materials Interfaces, EarlyView.
Tangetial air jet shear inducess island formation and nucleates topological point defects in uniform SmC films. Island bounded by edge dislocation loops shrink and transform into isolated point defects under continued shear. Mechanical perturbatio provides a controllable route for defect engineering in smectric liquid crystal thin films.
Gunganist Kongklad, Vandana Molahalli, Apichart Pattanaporkratana, Nattaporn Chattham   +3 more
wiley   +1 more source

Five-Dimensional Charged Rotating Black Holes

, 2005
We consider charged rotating black holes in 5-dimensional Einstein-Maxwell theory. These black holes are asymptotically flat, they possess a regular horizon of spherical topology and two independent angular momenta associated with two distinct planes of ...
Aliev, Anna Katinka Petersen, Breckenridge, Breckenridge, Cvetič, Cvetič, Cvetič, Dimopoulos, Elvang, Elvang, Emparan, Emparan, Francisco Navarro-Lérida, Gibbons, Giddings, Herdeiro, Heusler, Israel, Jutta Kunz, Kallosh, Kleihaus, Kleihaus, Kleihaus, Kleihaus, Kleihaus, Kleihaus, Klemm, Mazur, Morisawa, Myers, Robinson, Schönauer, Smarr, Smarr, Tangherlini, Wald   +35 more
core   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Linking Device Performance to Nanoscale Photoactivation of Grain Boundaries in 2D Hybrid Halide Perovskites

Advanced Materials Technologies, EarlyView.
The opto‐electronic response of polycrystalline (PEA)2PbBr4 thin films is investigated by correlating macroscopic photodetector performance with nanoscale mapping techniques. Grain boundary density is systematically tuned through crystallization control and linked to device responsivity.
Camilla Bordoni, Lorenzo Calcaterra, Andrea Ciavatti, Silvia Milita, Valentina Bonino, Lorenzo Margotti, Sara Cepić, Marisa Di Sabatino, Federico Boscherini, Daniela Cavalcoli, Beatrice Fraboni   +10 more
wiley   +1 more source

Scalar quasinormal modes, Lyapunov exponents and radii of null geodesics of rotating regular black holes

European Physical Journal C: Particles and Fields
The quasinormal modes of massless scalar field in rotating Bardeen and Hayward regular black holes are studied. The fundamental quasinormal modes and $$n=1$$ n = 1 first overtone quasinormal modes are calculated with the matrix method.
Yating Peng, Jia-Hui Huang
doaj   +1 more source

Observational signatures from horizonless black shells imitating rotating black holes

Journal of High Energy Physics, 2018
In arXiv:1705.10172 it was proposed that string theory replaces Schwarzschild black holes with horizonless thin shells with an AdS interior. In this paper we extend the analysis to slowly rotating black holes, solving the Israel-Lanczos-Sen junction ...
Ulf H. Danielsson, Suvendu Giri
doaj   +1 more source

Exciton Radiative Lifetimes in Hexagonal Diamond Ge and SixGe1–x Alloys

Advanced Optical Materials, EarlyView.
Strong room‐temperature photoluminescence reported in hexagonal Ge conflicts with theory predicting a nearly dark band edge. First‐principles calculations of excitonic radiative lifetimes fill a key gap in this debate, showing that pristine hexagonal Ge remains intrinsically weakly emissive, while Si alloying only modestly shortens the lifetime and ...
Michele Re Fiorentin, Michele Amato, Maurizia Palummo   +2 more
wiley   +1 more source

Separability of Black Holes in String Theory

, 2012
We analyze the origin of separability for rotating black holes in string theory, considering both massless and massive geodesic equations as well as the corresponding wave equations.
A Castro, B Carter, B Carter, B Carter, B Carter, B Carter, Cynthia Keeler, D Kubiznak, DD Chow, E Glass, ET Newman, F Jonghe De, F Larsen, F Larsen, Finn Larsen, G Gibbons, H Stephani, H Stephani, I Bredberg, I Robinson, JM Maldacena, L Mason, M Cariglia, M Cvetič, M Cvetič, M Cvetič, M Cvetič, M Cvetič, M Cvetič, M Cvetič, M Demianski, P Davis, P Taxiarchis, RP Kerr, S Benenti, S Benenti, S-Q Wu, T Houri, VP Frolov   +38 more
core   +1 more source

Quanta of geometry and rotating black holes [PDF]

Classical and Quantum Gravity, 1999
5 ...
openaire   +2 more sources