Results 61 to 70 of about 334,848 (323)

Scalable Thermal Engineering via Femtosecond Laser‐Direct‐Written Phononic Nanostructures

Advanced Functional Materials, EarlyView.
This study demonstrates that femtosecond laser‐induced periodic surface structures (fs‐LIPSS) can function as phononic metasurfaces, reducing thermal conductivity below the plain thin‐film limit. Phonon Monte Carlo analysis reveals that the periodic structures restrict phonon mean free paths.
Hiroki Hamma, Roman Anufriev, Kazuyoshi Fushinobu, Masahiro Nomura, Byunggi Kim   +4 more
wiley   +1 more source

Plane wave diffraction by a semi‐infinite parallel‐plate waveguide with partial material loading: The case of H polarisation

IET Microwaves, Antennas & Propagation
The analysis of diffraction by a semi‐infinite parallel‐plate waveguide with partial material loading is rigorously carried out using the Wiener–Hopf technique for the H‐polarised plane wave incidence.
Tong Zhang, Kazuya Kobayashi
doaj   +1 more source

Study of diffraction efficiency of diffraction gratings by the modified method of variables separation

Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2022
Background. The purpose of this work is to study the electromagnetic wave diffraction by cylindrical diffraction gratings. Material and methods. The problem is solved using the modified method of separation of variables. Results. The modified method of
Yu.G. Smirnov, V.Yu. Martynova, M.A. Moskaleva, A.A. Tsupak   +3 more
doaj   +1 more source

Atom-optics hologram in the time domain

, 2000
The temporal evolution of an atomic wave packet interacting with object and reference electromagnetic waves is investigated beyond the weak perturbation of the initial state.
A. Aspect, A. V. Soroko, A.M. Guzman, A.P. Kazantsev, A.V. Soroko, A.V. Soroko, B.J. Dalton, C.C. Bradley, D. Gabor, D. Gabor, E.A. Korsunsky, G. Lenz, G. Timp, G.M. Moy, H. Kogelnik, H.J. Lee, H.M. Wiseman, J. Lawall, J.J. McClelland, K. Moler, K.B. Davis, M. Anderson, M. Arndt, M. Holland, M. Kasevich, M. Lewenstein, M. Moringa, M.-O. Mewes, M.K. Oberthaler, M.K. Olsen, N. Davidson, N. Friedman, O. Zobay, P.E. Moskowitz, P.J. Martin, P.P. Ewald, R. Gupta, R.J.C. Spreeuw, V.G. Sidorovich, V.I. Balykin, V.I. Balykin, W. Zhang, Y. Castin   +42 more
core   +1 more source

Switchable Thermal Mid‐IR Conducting Polymer Antenna Arrays

Advanced Functional Materials, EarlyView.
This study presents switchable mid‐infrared plasmonic resonances in PEDOT antenna arrays. Their optical extinction peaks can be reversibly switched ‘OFF’ and ‘ON’ by tuning the polaronic charge carrier concentration via the polymer's redox state, offering modulation of optical responses in the thermal mid‐infrared range including around 10 µm ...
Pravallika Bandaru, Mohammad Shaad Ansari, Suraya Kazi, Dongqing Lin, Alexander Yu Polyakov, Magnus P. Jonsson   +5 more
wiley   +1 more source

Plane Wave Diffraction by a Finite Parallel‐Plate Waveguide Cavity With Perfect Electric Conductor Loading: The Case of H Polarization

IET Microwaves, Antennas & Propagation
This work presents a rigorous analysis of H‐polarised wave diffraction by a finite parallel‐plate waveguide cavity with perfect electric conductor loading, employing the Wiener‐Hopf technique.
Tong Zhang, Kazuya Kobayashi
doaj   +1 more source

Diffraction-Attenuation Resistant Beams: their Higher Order Versions and Finite-Aperture Generations

, 2010
Recently, a method for obtaining diffraction-attenuation resistant beams in absorbing media was developed through suitable superposition of ideal zero-order Bessel beams. In this work, we will show that such beams maintain their resistance to diffraction
Besieris, Bouchal, Conti, Durnin, Kukhlevsky, Longhi, Lu, Mugnai, Porras, Recami, Saari, Sheppard, Sheppard, Zamboni-Rached, Zamboni-Rached, Zamboni-Rached, Zamboni-Rached, Zamboni-Rached, Zamboni-Rached, Zamboni-Rached, Zamboni-Rached, Zamboni-Rached, Zamboni-Rached, Zamboni-Rached, Zamboni-Rached, Zamboni-Rached, Zamboni-Rached, Ziolkowski   +27 more
core   +1 more source

Deterministic hBN Bubbles as a Versatile Platform for Studies on Single‐Photon Emitters

Advanced Functional Materials, EarlyView.
Single‐photon emitters (SPEs) in hBN are promising for quantum technologies; however, in exfoliated samples their activation is required, limiting reproducibility of previous studies. This work introduces a large‐area MOVPE‐grown hBN platform that hosts SPEs without prior activation.
Piotr Tatarczak, Tomasz Fąs, Jan Pawłowski, Aleksandra Krystyna Dąbrowska, Jan Suffczyński, Mateusz Tokarczyk, Piotr Wróbel, Andrzej Wysmołek, Johannes Binder   +8 more
wiley   +1 more source

A NUMERICAL ANALYTICAL METHOD FOR SOLVING REVERSE PROBLEMS OF WAVE DIFFRACTION BY LAYERED INHOMOGENEOUS MEDIA [PDF]

Радиофизика и электроника, 2015
A numerical analytical method of the reverse problem solution is suggested for the relative permittivity profile of layered inhomogeneous media to be obtained from the frequency dependence of the reflection coefficient of a monochromatic plane ...
A. V. Brovenko, A. A. Vertiy, N. P. Melezhik, P. N. Melezhik, A. Ye. Poyedinchuk   +4 more
doaj   +1 more source

Exciton‐Polaritons in Nanoscale Metal‐Organic Frameworks: A Platform for the Reversible Modulation of Strong Light‐Matter Coupling via the Chemical Environment

Advanced Functional Materials, EarlyView.
Strong exciton‐photon coupling is achieved by integrating porphyrin ligand‐based MOF nanoparticles in optical cavities, as evidenced by pronounced polariton branch anticrossing. The porous nature of the resonator enables precise, reversible tuning via vapor pressure, unlocking unprecedented chemical‐environment controlled dynamic polaritonic platforms ...
Beatriz de Sola‐Báez, Laura Caliò, Mauricio E. Calvo, Juan F. Galisteo‐López, Jesús Hernández‐Saz, Miriam Herrera‐Collado, Carolina Carrillo‐Carrión, Hernán Míguez   +7 more
wiley   +1 more source