Results 71 to 80 of about 1,519,209 (383)

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

Mitigation of Cracks in High‐Performance Nickel‐Based Superalloys in Powder Bed Fusion Laser Beam of Metals Using a Metal Matrix Composite Approach

Advanced Engineering Materials, EarlyView.
High‐performance nickel‐based superalloys are often not processible in additive manufacturing (AM) due to hot cracking. The findings in this manuscript propose an efficient method to mitigate cracking and enhance mechanical properties of these alloys by producing a metal matrix composite, contributing to the material and process perspective of the AM ...
Klaus Büßenschütt, Maël Pontoreau, Christian Haase, Johannes‐Henrich Schleifenbaum   +3 more
wiley   +1 more source

Nanoscale Estimation of Coating Thickness on Substrates via Standardless BSE Detector Calibration

Nanomaterials, 2020
The thickness of electron transparent samples can be measured in an electron microscope using several imaging techniques like electron energy loss spectroscopy (EELS) or quantitative scanning transmission electron microscopy (STEM).
Radim Skoupy, Tomas Fort, Vladislav Krzyzanek   +2 more
doaj   +1 more source

Influence of Heat Treatment on Microstructure and Mechanical Properties at Elevated Temperatures of Nonweldable Ni‐Based Alloy Printed by Fused Filament Fabrication

Advanced Engineering Materials, EarlyView.
The fused filament‐fabricated MAR‐M247 alloy without hot isostatic pressing shows the lowest porosity of 4%. Heat treatment at 1220 °C produces coarse precipitates and carbides. Specimens heat‐treated at 1220 °C exhibit higher tensile strength (683 MPa) and elongation (10%) at room temperature.
Haneen Daoud, Ying Zheng, Agata Kulig, Natalja Agarkov, Esma Mese, Wolfgang Hofmann, Peter Würtele, Uwe Glatzel   +7 more
wiley   +1 more source

Manipulation of nanoparticles of different shapes inside a scanning electron microscope

Beilstein Journal of Nanotechnology, 2014
In this work polyhedron-like gold and sphere-like silver nanoparticles (NPs) were manipulated on an oxidized Si substrate to study the dependence of the static friction and the contact area on the particle geometry.
Boris Polyakov, Sergei Vlassov, Leonid M. Dorogin, Jelena Butikova, Mikk Antsov, Sven Oras, Rünno Lõhmus, Ilmar Kink   +7 more
doaj   +1 more source

Scanning-electron-microscope used in real-time study of friction and wear [PDF]

, 1975
Small friction and wear apparatus built directly into scanning-electron-microscope provides both dynamic observation and microscopic view of wear process.
Brainard, W. A., Buckley, D. H.
core   +1 more source

Electron scattering in atomic force microscopy experiments [PDF]

, 2005
It has been shown that electron transitions, as measured in a scanning tunnelling microscope (STM), are related to chemical interactions in a tunnelling barrier.
Albrecht, Arai, Binning, Cross, Eguchi, Foster, Foster, Foster, Franz J. Giessibl, Giessibl, Giessibl, Giessibl, Hembacher, Hembacher, Herz, Hofer, Hofer, Hofer, Hofer, Huang, Hug, Kresse, Kresse, Limot, Linda A. Zotti, Palotas, Werner A. Hofer   +26 more
core   +2 more sources

Investigation of Iron‐Aluminide‐Like Phase Composition in Complex Concentrated Fe32Cu12Ni11Ti16Al29 Alloy

Advanced Engineering Materials, EarlyView.
This work reveals the phase composition and quantitative morphology analysis of precipitation‐hardened Fe32Cu12Ni11Ti16Al29 complex‐concentrated alloy. The precipitates are shown to have a high coherency. Morphology transition between sphere, cuboidal, and elongated morphology is observed. Finally, the overaging behavior is captured using microhardness.
Rostyslav Nizinkovskyi, Lukas Hanisch, Georg Hasemann, Puspendu Sahu, Manja Krüger   +4 more
wiley   +1 more source

In vitro evaluation of dentin tubule occlusion by three bioactive materials: A scanning electron microscopic study

Dental Research Journal, 2019
Background: Dentin hypersensitivity (DH) is a common problem characterized by a short, sharp pain. Reduction of dentin permeability by occluding dentin tubules is considered as a method for treating DH.
Maryam Ghafournia, Maryam Hajnorouzali Tehrani, Afsaneh Nekouei, Reyhaneh Faghihian, Mehrnaz Mohammadpour, Atiyeh Feiz   +5 more
doaj   +1 more source

Nanophotonics with the scanning electron microscope

, 2007
Physical size and power consumption are both increasingly important issues in increasing the data throughput of future optical interconnects, switches and ultimately even optical memory elements.
Jonsson, Fredrik
core