Results 31 to 40 of about 78,993 (206)

Dynamics of passing-stars-perturbed binary star systems [PDF]

, 2019
In this work, we investigate the dynamical effects of a sequence of close encounters over 200 Myr varying in the interval of 10000 -- 100000 au between a binary star system and passing stars with masses ranging from 0.1$M_{\odot}$ to 10$M_{\odot}$.
Bancelin, David, Loibnegger, Birgit, Nordlander, Thomas, Pilat-Lohinger, Elke   +3 more
core   +2 more sources

Enhanced Spectral Tunability by Sub‐10 nm Nanogaps in Graphene‐Metal Hybrid Metasurfaces

Advanced Science, EarlyView.
A tunable mid‐infrared metasurface integrating graphene and metal antenna arrays with sub‐10 nm nanogaps is presented, overcoming the ≈20 nm limit of conventional fabrication. The enhanced spectral tuning range and modulation depth are enabled by combining electron‐beam lithography, thin metal deposition, and directional ion milling to precisely define
Fei Han, Zaoyang Lin, Kacper Pilarczyk, Hongwei Tang, Guy A. E. Vandenbosch, Joris Van de Vondel, Xuezhi Zheng, Niels Verellen, Ewald Janssens   +8 more
wiley   +1 more source

Controlling Twisted Angles in Directly Grown MoS2 Bilayers via Tilt Grain Boundary Engineering

Advanced Science, EarlyView.
In this study, the stacking configurations and the growth mechanism of twisted bilayer (TB) MoS2 are systematically investigated, revealing that the relative rotation angle between the two layers is guided by the tilt grain boundary (GBs) of the bottom layer.
Xiaotian Li, Xuan Zhao, Luneng Zhao, Junfeng Gao, Zihan Zhao, Jian Yang, Tiantian Zhang, Yibiao Feng, Zejun Luo, Nan Liu, Jiacai Nie, Wenkai Zhang, Ruifen Dou   +12 more
wiley   +1 more source

Chaotic dynamics of the planet in HD 196885 AB [PDF]

, 2014
Depending on the planetary orbit around the host star(s), a planet could orbit either one or both stars in a binary system as S-type or P-type, respectively. We have analysed the dynamics of the S-type planetary system in HD 196885 AB with an emphasis on
Hinse, Tobias Cornelius, Noyola, Joaquin, Quarles, Billy, Satyal, Suman   +3 more
core   +1 more source

Elevated Rates of Tidal Disruption Events in Active Galactic Nuclei

The Astrophysical Journal
Advances in time domain astronomy have produced a growing population of flares from galactic nuclei, including both tidal disruption events (TDEs) and flares in active galactic nuclei (AGN).
Karamveer Kaur, Nicholas C. Stone
doaj   +1 more source

Circular Polarimetric Imaging with a Metamaterial Integrated Long‐Wavelength Infrared Focal Plane Array

Advanced Science, EarlyView.
A quantum well infrared photodetector based long‐wavelength infrared division‐of‐focal‐plane‐array circular polarimeter featuring a 320 × 256 pixel array integrated with a chiral meta‐mirror structure array is established. The device achieves a circular polarization extinction ratio of 5.67, a 9.13‐fold enhancement in responsivity, a noise equivalent ...
Tianyun Zhu, Ling Wang, Wenji Jing, Jie Deng, Jiexian Ye, Yujie Zhang, Zeshi Chu, Jing Zhou, Xiaoshuang Chen, Xiangyang Li, Wei Lu, Xuechu Shen   +11 more
wiley   +1 more source

The basics of gravitational wave theory

, 2005
Einstein's special theory of relativity revolutionized physics by teaching us that space and time are not separate entities, but join as ``spacetime''.
Flanagan, Eanna E., Hughes, Scott A.
core   +1 more source

Vertical Phase Separation in Blended Organic Semiconducting Films and Impact on Their Electrical and Direct X‐Ray Detection Properties

Advanced Electronic Materials, EarlyView.
The composition of blends of 1,4,8,11‐tetramethyl‐6,13‐triethylsilylethynyl pentacene (TMTES) and polystyrene (PS) to be used in Organic Field‐Effect Transistors (OFETs) is optimized to achieve and enhance thin film crystallinity and a reduced charge trap density at the semiconductor/dielectric interface.
Maria Elisabetta Giglio, Elisabetta Colantoni, Ilaria Fratelli, Carme Martinez‐Domingo, Pedro Martinez‐Zaragoza, Giulia Napolitano, Enrico Campari, Paolo Branchini, Beatrice Fraboni, Laura Basiricó, Luca Tortora, Marta Mas‐Torrent   +11 more
wiley   +1 more source

Hybrid Molecular Photoanodes for Water Oxidation Based on Electropolymerized Cu Macrocyclic Complexes on BiVO4‐WO3

Advanced Energy Materials, EarlyView.
Hybrid photoanodes based on WO3/BiVO4 and Cu‐based molecular catalysts are developed for solar water oxidation. The molecular catalyst enables efficient hole transfer and passivates recombination centers, leading to enhanced photocurrent and long‐term stability.
Carlos G. Bellido, Michele Mazzanti, Koushik Ranu, Alberto Piccioni, Raffaello Mazzaro, Federico Boscherini, Fernando F. Salomón, Sergi Grau, Xavier Sala, Luca Pasquini, Antoni Llobet, Stefano Caramori   +11 more
wiley   +1 more source

Determination of Electron Extraction in Semiconductor Photoanodes: Steady‐State and Small‐Perturbation Response

Advanced Energy Materials, EarlyView.
A unified analytical model is developed to consistently interpret the steady‐state and small‐perturbation response of photoanodes, both in the time and frequency domain. By accounting for non‐ideal electron extraction and slow hole kinetics, the model explains key experimental trends in the case of a hematite photoanode and allows extraction of related
Paola Ragonese, Chiara Maurizio, Boris Kalinic, Thomas Kirchartz, Sandheep Ravishankar   +4 more
wiley   +1 more source