MRT letter: Real time and in situ imaging the reversible evolution of ethanol vapor condensed on mica surface

2011 ◽  
Vol 74 (6) ◽  
pp. 481-483 ◽  
Author(s):  
Donghua Zhang ◽  
Chen Zhang ◽  
Fuchun Zhang ◽  
Jun Hu
Keyword(s):  
Real Time ◽  
Ethanol Vapor ◽  
Mica Surface ◽  
Reversible Evolution ◽  
In Situ Imaging

Real-Time in Situ Imaging of the Delamination of thin Ta Films on Si(100) Substrates Via a Synchrotron Radiation Technique

2001 ◽  
Vol 695 ◽  
Author(s):  
B. L. French ◽  
J. C. Bilello
Keyword(s):  
Real Time ◽  
Failure Modes ◽  
Storage System ◽  
X Ray Imaging ◽  
Direct Radiography ◽  
Experimental Apparatus ◽  
Out Of Plane ◽  
Radiation Technique ◽  
In Situ Imaging

ABSTRACTThe thermal stress-induced delamination of 500nm polycrystalline Ta coatings on Si(100) substrates was studied via a recently developed real-time in situ imaging technique. This method used white beam synchrotron (on SSRL station 2-2) Laue transmission diffraction topography coupled with simultaneous direct radiography to record the thermomechanical failure modes of the Ta films as a function of temperature. The observations were made using a novel experimental apparatus, consisting of a 600°C hot stage and a portable CCD x-ray imaging/storage system with ~20m m resolution. The system is capable of recording 30 images/sec; hence, at moderate strain rates not only was the morphology of failure evident, but detailed study of the dynamics of delamination was also possible. The mode of failure and the adhesion strength are correlated with the physiochemical nature of the coating-substrate interface, and also with the degree of in-plane/out-of-plane texture of the Ta films. These observations should be capable of extension to the study of a variety of adhesion and cyclic failure issues in thin coatings.

scholarly journals Real-Time Two-Photon Microscopy and Its Application for In Situ Imaging

2001 ◽  
Vol 34 (6) ◽  
pp. 399-403 ◽  
Author(s):  
Tomoyuki Kaneko ◽  
Katsumasa Fujita ◽  
Hideo Tanaka ◽  
Masahito Oyamada ◽  
Osamu Nakamura ◽  
...  
Keyword(s):  
Real Time ◽  
Two Photon Microscopy ◽  
Two Photon ◽  
In Situ Imaging

scholarly journals Bio-inspired color-polarization imager for real-time in situ imaging

Optica ◽  
2017 ◽  
Vol 4 (10) ◽  
pp. 1263 ◽  
Author(s):  
Missael Garcia ◽  
Christopher Edmiston ◽  
Radoslav Marinov ◽  
Alexander Vail ◽  
Viktor Gruev
Keyword(s):  
Real Time ◽  
In Situ Imaging

scholarly journals Probing the dynamics of nanoparticle formation from a precursor at atomic resolution

2019 ◽  
Vol 5 (1) ◽  
pp. eaau9590 ◽  
Author(s):  
Wenpei Gao ◽  
Peter Tieu ◽  
Christopher Addiego ◽  
Yanling Ma ◽  
Jianbo Wu ◽  
...  
Keyword(s):  
Real Time ◽  
Low Dose ◽  
Atomic Scale ◽  
Atomic Resolution ◽  
Scale Transformation ◽  
Materials Synthesis ◽  
Pt Nanoclusters ◽  
Transmission Electron ◽  
In Situ Imaging

Control of reduction kinetics and nucleation processes is key in materials synthesis. However, understanding of the reduction dynamics in the initial stages is limited by the difficulty of imaging chemical reactions at the atomic scale; the chemical precursors are prone to reduction by the electron beams needed to achieve atomic resolution. Here, we study the reduction of a solid-state Pt precursor compound in an aberration-corrected transmission electron microscope by combining low-dose and in situ imaging. The beam-sensitive Pt precursor, K2PtCl4, is imaged at atomic resolution, enabling determination of individual (K, Pt, Cl) atoms. The transformation to Pt nanoclusters is captured in real time, showing a three-stage reaction including the breaking of the ionic bond, formation of PtCl2, and the reduction of the dual-valent Pt to Pt metal. Deciphering the atomic-scale transformation of chemicals in real time using combined low-dose and in situ imaging brings new possibility to study reaction kinetics in general.

Development of in situ Imaging Probe for Surgical Operation of Deep Brain Stimulation

2011 ◽  
Vol 131 (12) ◽  
pp. 427-428
Author(s):  
Toshihiko Noda ◽  
Pan Yi-Li ◽  
Ayato Tagawa ◽  
Takuma Kobayashi ◽  
Kiyotaka Sasagawa ◽  
...  
Keyword(s):  
Deep Brain Stimulation ◽  
Brain Stimulation ◽  
Surgical Operation ◽  
Imaging Probe ◽  
Deep Brain ◽  
In Situ Imaging

Probing the Dynamic Self-Assembly Behaviour of Photoswitchable Wormlike Micelles in Real Time

2018 ◽  
Author(s):  
Elaine A. Kelly ◽  
Judith E. Houston ◽  
Rachel Evans
Keyword(s):  
Real Time ◽  
Absorption Spectroscopy ◽  
Self Assembly ◽  
Uv Light ◽  
Wormlike Micelles ◽  
Tetraethylene Glycol ◽  
Light Illumination ◽  
First Time ◽  
Dependent Processes

Understanding the dynamic self-assembly behaviour of azobenzene photosurfactants (AzoPS) is crucial to advance their use in controlled release applications such as<i></i>drug delivery and micellar catalysis. Currently, their behaviour in the equilibrium <i>cis-</i>and <i>trans</i>-photostationary states is more widely understood than during the photoisomerisation process itself. Here, we investigate the time-dependent self-assembly of the different photoisomers of a model neutral AzoPS, <a>tetraethylene glycol mono(4′,4-octyloxy,octyl-azobenzene) </a>(C<sub>8</sub>AzoOC<sub>8</sub>E<sub>4</sub>) using small-angle neutron scattering (SANS). We show that the incorporation of <i>in-situ</i>UV-Vis absorption spectroscopy with SANS allows the scattering profile, and hence micelle shape, to be correlated with the extent of photoisomerisation in real-time. It was observed that C<sub>8</sub>AzoOC<sub>8</sub>E<sub>4</sub>could switch between wormlike micelles (<i>trans</i>native state) and fractal aggregates (under UV light), with changes in the self-assembled structure arising concurrently with changes in the absorption spectrum. Wormlike micelles could be recovered within 60 seconds of blue light illumination. To the best of our knowledge, this is the first time the degree of AzoPS photoisomerisation has been tracked <i>in</i><i>-situ</i>through combined UV-Vis absorption spectroscopy-SANS measurements. This technique could be widely used to gain mechanistic and kinetic insights into light-dependent processes that are reliant on self-assembly.

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