Results 111 to 120 of about 476,899 (295)

THz‐Driven Coherent Phonon Fingerprints of Hidden Symmetry Breaking in 2D Layered Hybrid Perovskites

Advanced Materials, EarlyView.
Intense THz pulses are employed to drive coherent phonons in 2D Ruddlesden‐Popper hybrid metal‐halide perovskites (HOIPs) from the (PEA)2(MA)n‐1PbnI3n+1 family, revealing mode‐selective spectroscopic signatures of inversion symmetry breaking in those nominally centrosymmetric materials. These findings provide a handle to decode nonlinear phonon driving
Joanna M. Urban, Michael S. Spencer, Maximilian Frenzel, Gaëlle Trippé‐Allard, Marie Cherasse, Charlotte Berrezueta‐Palacios, Prakriti P. Joshi, Alexander P. Fellows, Olga Minakova, Eduardo B. Barros, Luca Perfetti, Stephanie Reich, Martin Wolf, Emmanuelle Deleporte, Sebastian F. Maehrlein   +14 more
wiley   +1 more source

Beam-Steering Antenna Technique Using Operational Amplifiers for Sub-6 GHz

IEEE Access
A methodology for beam-steering using operational amplifiers (Op-amps) is presented. Continuous steering is required in various advanced applications and its implementation necessitates additional efforts since singularly control of the feeding of the ...
Lida Kouhalvandi, Ladislau Matekovits
doaj   +1 more source

Unperceivable Designs of Wearable Electronics

Advanced Materials, EarlyView.
Unperceivable wearable technologies seamlessly integrate into everyone's daily life, for healthcare and Internet‐of‐Things applications. By remaining completely unnoticed both visually and tactilely, by the user and others, they ensure medical privacy and allow natural social interactions.
Yijun Liu, Séverine De Mulatier, Naoji Matsuhisa   +2 more
wiley   +1 more source

Pattern Generation by Network composed of Oscillators and Capacitive Couplers

Paladyn, 2011
This article proposes a network system composed of oscillators and capacitive couplers as an abstract neural circuit model for use in elucidating functional combinations of neural elements.
Moriyama Takuro, Kurabayashi Daisuke
doaj   +1 more source

Probing and Tuning Strain‐Localized Exciton Emission in 2D Material Bubbles at Room Temperature

Advanced Materials, EarlyView.
This work provides an approach: 1) to directly visualize the associated exciton properties, revealing an intrinsic emission wavelength shift, and 2) actively modify local strain, enabling further exciton emission tuning. These findings provide direct insights into the strain‐localized emission dynamics in bubbles and establish a robust framework for ...
Junze Zhou, John C. Thomas, Thomas P. Darlington, Edward S. Barnard, Atsushi Taguchi, Adam Schwartzberg, Alexander Weber‐Bargioni   +6 more
wiley   +1 more source

Characterization of Complex Stacking of Semiconductors Through Near Field Imaging and Spectroscopy

Advanced Materials, EarlyView.
SNOM imaging and spectroscopy on a mechanically cleaved facet is used to characterize the different layers of complex epitaxial heterostructures composed of a type II superlattice and highly doped semiconductors. Both the geometrical parameters of the stack and the optical properties of the individual layers and of the interfaces are retrieved, as well
Laure Tailpied, Clément Gureghian, Fréderic Fossard, Jean‐Sébastien Mérot, Jean‐Baptiste Rodriguez, Fernando Gonzalez‐Posada Flores, Grégory Vincent, Thierry Taliercio, Baptiste Fix   +8 more
wiley   +1 more source

Biological and Biologically Inspired Functional Nanostructures: Insights into Structural, Optical, Thermal, and Sensing Applications

Advanced Materials, EarlyView.
Biological and biologically‐inspired functional nanostructures with structural, thermal, optical, and sensing applications are reviewed. The role of nanoscale features in biological materials on performance is described, and their blueprints are used for bio‐inspired nanomaterials, synthesized using advanced techniques (i.e., photolithography, bio ...
Chao Hsuan (Joseph) Sung, Taige Hao, Herry Fang, Andrew Tran Nguyen, Valentina Perricone, Haitao Yu, Wei Huang, Ezra Sarmiento, Adrian Francisco Duran Ornelas, Derek Lublin, Ric Wehling, Sanaz Farajollahi, Atsushi Arakaki, Dhriti Nepal, Nathan Patrick Lord, David Kisailus   +15 more
wiley   +1 more source

Advancing the Frontiers of HfO2‐Based Ferroelectric Memories: Innovative Concepts from Materials to Applications

Advanced Materials, EarlyView.
HfO2‐based ferroelectric materials are promising for next‐generation memory technologies by providing outstanding performance aligning with data‐centric computing needs. This review details recent advancements in materials, devices, and integration for HfO2‐based memories, with the goal of identifying both the technological opportunities and remaining ...
Zuopu Zhou, Lingqi Li, Yang Feng, Xiaolin Wang, Zijie Zheng, Leming Jiao, Haofei Zheng, Yufei Shi, Kah‐Wee Ang, Xiao Gong   +9 more
wiley   +1 more source

U(3) and Pseudo-U(3) Symmetry of the Relativistic Harmonic Oscillator [PDF]

, 2005
Joseph N. Ginocchio
openalex   +1 more source

Full Crystallographic Imaging of Hexagonal Boron Nitride Monolayers with Phonon‐Enhanced Sum‐Frequency Microscopy

Advanced Materials, EarlyView.
A nonlinear optical microscopy technique is introduced that enables rapid imaging of hexagonal boron nitride monolayers, which are usually optically invisible. The nonlinear mixing of mid‐infrared and visible laser pulses enables full crystallographic imaging through phase‐resolved sum‐frequency generation microscopy, where the resonant excitation of a
Niclas S. Mueller, Alexander P. Fellows, Ben John, Andrew E. Naclerio, Christian Carbogno, Katayoun Gharagozloo‐Hubmann, Damián Baláž, Ryan A. Kowalski, Hendrik H. Heenen, Christoph Scheurer, Karsten Reuter, Joshua D. Caldwell, Martin Wolf, Piran R. Kidambi, Martin Thämer, Alexander Paarmann   +15 more
wiley   +1 more source