Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Alexei A Maznev"'
Autor:
Paul H Otsuka, Sylvain Mezil, Osamu Matsuda, Motonobu Tomoda, Alexei A Maznev, Tian Gan, Nicholas Fang, Nicholas Boechler, Vitalyi E Gusev, Oliver B Wright
Publikováno v:
New Journal of Physics, Vol 20, Iss 1, p 013026 (2018)
We extend time-domain imaging in acoustic metamaterials to gigahertz frequencies. Using a sample consisting of a regular array of ∼1 μ m diameter silica microspheres forming a two-dimensional triangular lattice on a substrate, we implement an ultr
Externí odkaz:
https://doaj.org/article/9d99884c95f44906899fb5a8ad334a9f
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)
For over half a century, temperature wave was deemed exotic and mattered only at extremely low temperatures. Here, the authors reported direct observation of second sound, signature of the temperature wave, at a record-high temperature of over 200 K.
Externí odkaz:
https://doaj.org/article/b75b67a91f4a4490a058c6dfe3df1aa2
Autor:
Jiawei Zhou, Hyun D. Shin, Ke Chen, Bai Song, Ryan A. Duncan, Qian Xu, Alexei A. Maznev, Keith A. Nelson, Gang Chen
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
To what extent the charge carriers can alter phonon heat conduction at environmental temperatures through electron–phonon interactions is an open question. Here, the authors demonstrate substantial reduction in thermal conductivity at high charge c
Externí odkaz:
https://doaj.org/article/bb6d148cb68c4a068f5c0b71eded9863
Autor:
Vazrik Chiloyan, Samuel Huberman, Zhiwei Ding, Jonathan Mendoza, Alexei A. Maznev, Keith A. Nelson, Gang Chen
Publikováno v:
Physical Review B. 104
Autor:
Marc Herzog, Alexander von Reppert, Jan‐Etienne Pudell, Carsten Henkel, Matthias Kronseder, Christian H. Back, Alexei A. Maznev, Matias Bargheer
Ultrafast X-ray diffraction is used to quantify the transport of energy in laser-excited nanoscale gold–nickel (Au–Ni) bilayers. Electron transport and efficient electron–phonon coupling in Ni convert the laser-deposited energy in the conductio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8ada5c812657acf855923e606fdeb0f
https://mediatum.ub.tum.de/1693449
https://mediatum.ub.tum.de/1693449
Publikováno v:
Crystals, Vol 6, Iss 5, p 52 (2016)
Bragg band gaps of phononic crystals generally, but not always, open at Brillouin zone boundaries. The commonly accepted explanation stems from the empty lattice model: assuming a small material contrast between the constituents of the unit cell, avo
Externí odkaz:
https://doaj.org/article/cf028836ccfe4cd1bcce4b1356cc978d
Autor:
Danny Fainozzi, Federico Caporaletti, Flavio Capotondi, Dario De Angelis, Ryan A. Duncan, Laura Foglia, Alessandro Martinelli, Riccardo Mincigrucci, Keith A. Nelson, Emanuele Pedersoli, Marco Zanatta, Alexei A. Maznev, Giulio Monaco, Filippo Bencivenga, Giacomo Baldi
Publikováno v:
APL Materials, Vol 12, Iss 5, Pp 051122-051122-9 (2024)
We crossed two femtosecond extreme ultraviolet (EUV) pulses on a 100 nm thick amorphous membrane of SiO2, generating transient gratings (TGs) of light intensity with 84 nm spatial periodicity. The EUV TG excitation gave rise to the efficient generati
Externí odkaz:
https://doaj.org/article/83b78732fafb48078494133b165efeda