Results 21 to 30 of about 4,278,026 (378)

Single-atom vibrational spectroscopy in the scanning transmission electron microscope

Science, 2020
Seeing single silicon atom vibrations Vibrational spectroscopy can achieve high energy resolution, but spatial resolution of unperturbed vibrations is more difficult to realize. Hage et al.
F. Hage, G. Radtke, D. Kepaptsoglou, M. Lazzeri, Q. Ramasse   +4 more
semanticscholar   +1 more source

Attosecond metrology in a continuous-beam transmission electron microscope

Science Advances, 2020
Electron microscopy is advanced to attosecond resolution by modulating the beam with the field cycles of a continuous-wave laser. Electron microscopy can visualize the structure of complex materials with atomic and subatomic resolution, but ...
A. Ryabov, J. Thurner, D. Nabben, M. Tsarev, P. Baum   +4 more
semanticscholar   +1 more source

Single atom manipulation and control in a scanning transmission electron microscope [PDF]

, 2017
We demonstrate that the sub-atomically focused beam of a scanning transmission electron microscope (STEM) can be used to controllably manipulate individual dopant atoms in a 2D graphene lattice.
O. Dyck, Songkil Kim, Sergei V. Kalinin, S. Jesse   +3 more
semanticscholar   +1 more source

Isotope analysis in the transmission electron microscope [PDF]

Nature Communications, 2016
The Ångström-sized probe of the scanning transmission electron microscope can visualize and collect spectra from single atoms. This can unambiguously resolve the chemical structure of materials, but not their isotopic composition.
T. Susi, C. Hofer, Giacomo Argentero, Gregor T. Leuthner, T. Pennycook, C. Mangler, Jannik C. Meyer, J. Kotakoski   +7 more
semanticscholar   +1 more source

Pilot study on the effects of preservatives on corneal collagen parameters measured by small angle X-ray scattering analysis

BMC Research Notes, 2021
Objective Small angle X-ray scattering (SAXS) analysis is a sensitive way of determining the ultrastructure of collagen in tissues. Little is known about how parameters measured by SAXS are affected by preservatives commonly used to prevent autolysis. We
Susyn Joan Kelly, Lizette duPlessis, John Soley, Frazer Noble, Hannah Carolyn Wells, Patrick John Kelly   +5 more
doaj   +1 more source

The Impact of Multiple Autoclave Cycles on the Surface Roughness of Thermally Treated Nickel-Titanium Endodontic Files

Advances in Materials Science and Engineering, 2022
In this study, we evaluate the surface roughness (SR) of three thermally treated nickel-titanium rotary instruments (i.e., TruNatomy [TN], ProTaper Gold [PTG], and EdgeTaper Platinum [ETP]) after impact testing with multiple autoclave sterilization ...
Raidan Ba-Hattab, Rahaf A. Almohareb, Rana Alkhalaf, Shikhah Binnjefan, Meral Sulayem, Reem M. Barakat   +5 more
doaj   +1 more source

Design and characterization of dielectric filled TM$_{110}$ microwave cavities for ultrafast electron microscopy [PDF]

, 2018
Microwave cavities oscillating in the TM$_{110}$ mode can be used as dynamic electron-optical elements inside an electron microscope. By filling the cavity with a dielectric material it becomes more compact and power efficient, facilitating the ...
A. H. Kemper, Collin R. E., E. H. Rietman, E. R. Kieft, Griffiths D. J., H. A. van Doorn, I. Koole, J. F. M. van Rens, O. J. Luiten, P. H. A. Mutsaers, Pozar D. M., W. Verhoeven   +11 more
core   +2 more sources

Serial protein crystallography in an electron microscope

Nature Communications, 2019
Serial X-ray crystallography at free-electron lasers allows to solve biomolecular structures from sub-micron-sized crystals. However, beam time at these facilities is scarce, and involved sample delivery techniques are required.
R. Bücker, P. Hogan-Lamarre, P. Mehrabi, E. Schulz, Lindsey A. Bultema, Y. Gevorkov, W. Brehm, O. Yefanov, D. Oberthür, G. Kassier, R. J. D. Miller   +10 more
semanticscholar   +1 more source

Fabrication of SrGe2 thin films on Ge (100), (110), and (111) substrates

Nanoscale Research Letters, 2018
Semiconductor strontium digermanide (SrGe2) has a large absorption coefficient in the near-infrared light region and is expected to be useful for multijunction solar cells.
T. Imajo, K. Toko, R. Takabe, N. Saitoh, N. Yoshizawa, T. Suemasu   +5 more
doaj   +1 more source

Subcellular localization of the mosquito sterol carrier protein-2 and sterol carrier protein-x

Journal of Lipid Research, 2004
Subcellular distribution of Aedes aegypti sterol carrier protein-2 (AeSCP-2) and AeSCP-x was studied using electron microscopy. In both cultured A. aegypti cells and in the larval midgut, AeSCP-2 was detected mostly in the cytosol, with some labeling ...
Que Lan, Randall J. Massey
doaj   +1 more source