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3,291 Newest Publications about the topic microscopes


Inter‐laboratory comparison of a WDS–EDS quantitative X‐ray microanalysis of a metallic glass

01-Dec-2014 | Philippe Jonnard, François Brisset, Florence Robaut, Guillaume Wille, Jacky Ruste, X-Ray Spectrometry, 2014

We conducted an inter‐laboratory study of a metallic glass whose main component is nickel. Two determinations of the mass fractions of the different elements present within the sample were asked to the participants: one at an acceleration voltage of 15 or 20 kV and another one at 5 kV. We ...


Two-Dimensional Imaging of Fast Intracellular Ca2+ Release

01-Dec-2014 | Tian, Q., Kaestner, L., Lipp, P., CSH Protocols, 2014

Asynchronous release of calcium (Ca2+)—for example, the generation of Ca2+ alternans in cardiac myocytes—is a phenomenon important in the development of cardiac arrhythmogenesis. The development of a failure to release Ca2+ at individual release sites can be regarded as a major contributor to ...


Microscopy: Hasten high resolution

27-Nov-2014 | Pennycook, Stephen J.; Kalinin, Sergei V.;, Nature, 2014

Microscopy: Hasten high resolution Nature 515, 7528 (2014). doi:10.1038/515487a Authors: Stephen J. Pennycook & Sergei V. Kalinin Build precision microscopes to map atoms, say Stephen J. Pennycook and Sergei V. Kalinin.


In situ E‐SEM and TEM observations of the thermal annealing effects on ion‐amorphized 6H‐SiC single crystals and nanophased SiC fibers

21-Nov-2014 | Juan Huguet‐Garcia, Aurelien Jankowiak, Sandrine Miro, Renaud Podor, Estelle Meslin, Yves Serruys, Jean‐Marc Costantini, physica status solidi (b), 2014

Abstract Hi Nicalon type S (HNS) SiC fiber and 6H‐SiC single crystals have been irradiated with 4 MeV Au3+ at room temperature (RT) and to a fluence of 2 × 1015 cm−2. These irradiation conditions lead to the complete amorphization of the irradiated layer in both samples. Post‐irradiation ...


Low Voltage Transmission Electron Microscopy of Graphene

18-Nov-2014 | Alicja Bachmatiuk, Jiong Zhao, Sandeep Madhukar Gorantla, Ignacio Guillermo Gonzalez Martinez, Jerzy Wiedermann, Cha ..., Small, 2014

The initial isolation of graphene in 2004 spawned massive interest in this two‐dimensional pure sp2 carbon structure due to its incredible electrical, optical, mechanical, and thermal effects. This in turn led to the rapid development of various characterization tools for graphene. Examples ...


What environmental transmission electron microscopy measures and how this links to diffusivity: thermodynamics versus kinetics

17-Nov-2014 | THOMAS WALTHER, Journal of Microscopy, 2014

Summary Environmental or in situ electron microscopy means the observation of material in its native environment, which can be gaseous or liquid, as compared to more traditional post‐mortem electron microscopy carried out under (ultra) high vacuum conditions. Experiments can be performed on ...


Molecules, Vol. 19, Pages 18381-18398: Data-Driven Techniques for Detecting Dynamical State Changes in Noisily Measured 3D Single-Molecule Trajectories

12-Nov-2014 | Calderon, Christopher P., Molecules, 2014

Optical microscopes and nanoscale probes (AFM, optical tweezers, etc.) afford researchers tools capable of quantitatively exploring how molecules interact with one another in live cells. The analysis of in vivo single-molecule experimental data faces numerous challenges due to the complex, ...


Fixed-Gap Tunnel Junction for Reading DNA Nucleotides

12-Nov-2014 | Pei Pang; Brian Alan Ashcroft; Weisi Song; Peiming Zhang; Sovan Biswas; Quan Qing; Jialing Yang; Robert J. Nemanich; ..., ACS Nano, 2014

Previous measurements of the electronic conductance of DNA nucleotides or amino acids have used tunnel junctions in which the gap is mechanically adjusted, such as scanning tunneling microscopes or mechanically controllable break junctions. Fixed-junction devices have, at best, detected the ...


New capabilities for `colouring in' the chemistry of crystal defects atom‐by‐atom

29-Oct-2014 | Sarah J. Haigh, Acta Crystallographica Section A, 2014

The latest generation of scanning transmission electron microscopes equipped with high‐efficiency energy‐dispersive X‐ray detectors are breaking new ground with respect to high‐resolution elemental imaging of materials. In this issue, Paulauskas et al. [Acta Cryst. (2014), A70, 524531] ...


Synthesis of polyethyleneimine (PEI) and β‐cyclodextrin grafted PEI nanocomposites with magnetic cores for lipase immobilization and esterification

27-Oct-2014 | Mehdi Khoobi, Masoud Khalilvand‐Sedagheh, Ali Ramazani, Zahra Asadgol, Hamid Forootanfar, Mohammad Ali Faramarzi, Journal of Chemical Technology & Biotechnology, 2014

Abstract Background Fabrication of nanocomposites with magnetic core and their applications for enzyme immobilization has been introduced as an intresting trend during the last decades. The present study described the synthesis of polyethyleneimine (PEI) and β‐cyclodextrin grafted PEI ...


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