Zobrazeno 1 - 10
of 142
pro vyhledávání: '"J. Flannigan"'
Publikováno v:
ACS Omega, Vol 5, Iss 49, Pp 31867-31871 (2020)
Externí odkaz:
https://doaj.org/article/6f59c9c9df3b41f1999ec73f9e0ea0da
Autor:
Daniel X. Du, David J. Flannigan
Publikováno v:
Structural Dynamics, Vol 7, Iss 2, Pp 024103-024103-11 (2020)
Ultrafast x-ray and electron scattering techniques have proven to be useful for probing the transient elastic lattice deformations associated with photoexcited coherent acoustic phonons. Indeed, femtosecond electron imaging using an ultrafast electro
Externí odkaz:
https://doaj.org/article/c98124d50fac409abfb882135a4209f0
Publikováno v:
Materials Research Letters, Vol 5, Iss 6, Pp 379-385 (2017)
Traditional one-step annealing of ultrathin amorphous Y–Fe–O films on Si has been reported to yield ‘incomplete crystallization’. Here, it is shown that films produced by standard anneals (e.g.: 800°C, 3 min) actually contain yttrium iron ga
Externí odkaz:
https://doaj.org/article/00964d7033b04e009a57efebe2b337eb
Autor:
Paige E Engen, David J Flannigan
Publikováno v:
Microscopy and Microanalysis. 28:2302-2305
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d484bfceb79bb4aba26e2db35070bc15
https://doi.org/10.1017/s1431927622008844
https://doi.org/10.1017/s1431927622008844
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016)
Phonons—crystal lattice vibrations—interact with crystal defects on the nanometre spatial scale and femtosecond timescale. Here, the authors demonstrate direct, real-space imaging of the nucleation, emergence and dispersion of single-phonon wavef
Externí odkaz:
https://doaj.org/article/6516d206fa9540da8b3eb99d9e9d3fdc
Publikováno v:
Physical Chemistry Chemical Physics. 24:14044-14054
In femtosecond (fs) 4D ultrafast electron microscopy (UEM), a tradeoff is made between photoelectrons per packet and time resolution. One consequence of this can be longer-than-desirable acquisition times for low-density packets, and particularly for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1165e545e0441334f1f0984663723950
https://doi.org/10.1039/d2cp01250b
https://doi.org/10.1039/d2cp01250b
Publikováno v:
ACS Nano. 15:20253-20260
Key properties of two-dimensional (2D) layered materials are highly strain tunable, arising from bond modulation and associated reconfiguration of the energy bands around the Fermi level. Approache...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5118c077c2cb029bbc9be05323ba9c24
https://doi.org/10.1021/acsnano.1c08348
https://doi.org/10.1021/acsnano.1c08348
Publikováno v:
Structural Dynamics, Vol 4, Iss 4, Pp 044019-044019-16 (2017)
We report correlative crystallographic and morphological studies of defect-dependent phonon dynamics in single flakes of 1T-TaS2 and 2H-WSe2 using selected-area diffraction and bright-field imaging in an ultrafast electron microscope. In both mat
Externí odkaz:
https://doaj.org/article/a4691bf801f14d7d8187646bbdd305d5
Autor:
David J. Flannigan, Wyatt A. Curtis
Publikováno v:
Physical Chemistry Chemical Physics. 23:23544-23553
Though efforts to improve the temporal resolution of transmission electron microscopes (TEMs) have waxed and waned for decades, with relatively recent advances routinely reaching sub-picosecond scales, fundamental and practical challenges have hinder
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d834e4eee678b193c4447c9e80d3eb64
https://doi.org/10.1039/d1cp03518e
https://doi.org/10.1039/d1cp03518e
Publikováno v:
Microscopy and Microanalysis. 27:3416-3418
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e80a18e24e2cec5cc0853cab8347376
https://doi.org/10.1017/s1431927621011740
https://doi.org/10.1017/s1431927621011740