Výsledky vyhledávání - "Günther Kassier"

Environmental Liquid Cell Technique for Improved Electron Microscopic Imaging of Soft Matter in Solution

Autor: Eike C. Schulz, Sana Azim, Jan-Philipp Leimkohl, Michiel B. de Kock, Günther Kassier, Friedjof Tellkamp, Niels de Jonge, Ernesto Rafael Osorio-Blanco, Sercan Keskin, Marcelo Calderón, R. J. Dwayne Miller, Josef Gonschior, Lindsey A. Bultema, Robert Bücker

Publikováno v: Microscopy and Microanalysis

Liquid-phase transmission electron microscopy is a technique for simultaneous imaging of the structure and dynamics of specimens in a liquid environment. The conventional sample geometry consists of a liquid layer tightly sandwiched between two Si3N4

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a904c6a189a5a6c8c9ac958fb382432a
https://hdl.handle.net/21.11116/0000-0008-0420-F21.11116/0000-0007-87FC-521.11116/0000-0007-87FF-2

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Determining the radial distribution function of water using electron scattering: A key to solution phase chemistry

Autor: M B de Kock, Günther Kassier, Sana Azim, Robert J. Miller

Publikováno v: The Journal of Chemical Physics

High energy electron scattering of liquid water (H2O) at near-ambient temperature and pressure was performed in a transmission electron microscope (TEM) to determine the radial distribution of water, which provides information on intra- and intermole

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33fab34f345368d165c296eb3acae3ee
https://hdl.handle.net/21.11116/0000-0007-6FC4-021.11116/0000-0007-6FC6-E21.11116/0000-0007-6FC7-D

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Human γS-Crystallin–Copper Binding Helps Buffer against Aggregation Caused by Oxidative Damage

Autor: Rachel W. Martin, R. J. Dwyane Miller, Kyle W. Roskamp, Günther Kassier, Brenna Norton-Baker, Sana Azim, Marc A. Sprague-Piercy

Publikováno v: Biochemistry

Divalent metal cations can play a role in protein aggregation diseases, including cataract. Here we compare the aggregation of human γS-crystallin, a key structural protein of the eye lens, via mutagenesis, ultraviolet light damage, and the addition

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6821f5630a2ecb2d6d6c76c363e9e92
https://hdl.handle.net/21.11116/0000-0006-A0A8-721.11116/0000-0006-A0AA-521.11116/0000-0006-A0AB-4

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Serial protein crystallography in an electron microscope

Autor: Y. Gevorkov, R. J. Dwayne Miller, Pedram Mehrabi, Robert Bücker, Eike C. Schulz, Oleksandr Yefanov, Günther Kassier, Lindsey A. Bultema, Dominik Oberthür, W. Brehm, Pascal Hogan-Lamarre

Publikováno v: Nature Communications (11) 996 (2020)
Nature Communications
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Nature Communications 11(1), 996 (2020). doi:10.1038/s41467-020-14793-0

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. On the other hand, ro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9ad06a60188b2c4082fdf54ed689cd6
https://hdl.handle.net/11420/5387

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Optical fiber-driven low energy electron gun for ultrafast streak diffraction

Autor: R. J. Dwayne Miller, Günther Kassier, Chiwon Lee

Publikováno v: Applied Physics Letters

Here, we present an optical fiber-based electron gun designed for the ultrafast streaking of low-energy electron bunches. The temporal profile of the few tens of the picosecond long electron bunch composed of 200 electrons is well characterized using

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d1ad836723dd053d05b1ec1853154c6
https://hdl.handle.net/21.11116/0000-0004-93BF-F21.11116/0000-0002-4557-F21.11116/0000-0002-4559-D

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Fabrication and characterization of a focused ion beam milled lanthanum hexaboride based cold field electron emitter source

Autor: Robert Bücker, Günther Kassier, Fengshan Zheng, Gopal Singh, R. J. Dwayne Miller, Rafal E. Dunin-Borkowski, Stephen T. Purcell, Vadim Migunov, Maximilian Kruth, Miriam Barthelmess

Publikováno v: Applied Physics Letters
Applied Physics Letters, American Institute of Physics, 2018, 113 (9), pp.093101. ⟨10.1063/1.5039441⟩
Applied Physics Letters, 2018, 113 (9), pp.093101. ⟨10.1063/1.5039441⟩
Applied physics letters 113(9), 093101 (2018). doi:10.1063/1.5039441

We report on a method of fabricating lanthanum hexaboride (LaB6) cold field emission tips with sub-100-nm apices by using a combination of electrochemical etching and focused ion beam milling. The primary advantage of combining the two methods is rap

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72c060f100929de84560fca3e355e5c9
https://hdl.handle.net/21.11116/0000-0004-8E2F-921.11116/0000-0002-19D2-521.11116/0000-0002-19D4-3

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Photochromism of Amphiphilic Dithienylethenes as Langmuir–Schaefer Films

Autor: Sean M Myers, R. Scott Murphy, Elena Koenig, R. J. Dwayne Miller, Maria Katsiaflaka, Sercan Keskin, Andreas Rossos, Regis Y. N. Gengler, Robert Bücker, Günther Kassier, Jianxin Cai

Publikováno v: Langmuir

Surface pressure–area isotherms were recorded under different irradiation conditions for single-component Langmuir films of three photochromic amphiphilic dithienylethenes. Nonirradiated films of these photochromic amphiphiles were mechanically sta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d338f8afa7c6d432c998b4c7ea0c2ad8
https://hdl.handle.net/21.11116/0000-0006-D584-421.11116/0000-0005-DECC-C21.11116/0000-0005-DECE-A

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