Evidence for Spinodal Decomposition in Ti-15Mo Quenched Alloy Using Transmission Electron Microscopy
Publication date: Available online 22 March 2019Source: MicronAuthor(s): Alphy George, Divakar R.AbstractElectron diffraction effect associated with nano-scale periodic modulations observed in a quenched Ti-15 wt%Mo alloy within ω phase forming regime has been investigated in this study by analyzing selected area diffraction patterns and high-resolution phase contrast images. Crystallographic direction of the side bands in electron diffraction associated with the periodic modulation of wavelength 1.3 nm is established as [001]β which is an elastically soft direction for the body-centered cubic lattice. Characteristic...
Source: Micron - March 23, 2019 Category: Biology Source Type: research
Imaging photoinduced surface potentials on hybrid perovskites by real-time Scanning Electron Microscopy
Publication date: Available online 20 March 2019Source: MicronAuthor(s): Gabriele Irde, Silvia Maria Pietralunga, Vittorio Sala, Maurizio Zani, James M. Ball, Alex J Barker, Annamaria Petrozza, Guglielmo Lanzani, Alberto TagliaferriAbstractWe introduce laser-assisted Time-Resolved SEM (TR-SEM), joining Scanning Electron Microscopy and laser light excitation, to probe the long-term temporal evolution of optically excited charge distributions at the surface of Metal Ammonium Lead Triiodide (MAPbI3) hybrid perovskite thin films. Laser-assisted TR-SEM relies on the optically induced local modification of Secondary Electron (SE...
Source: Micron - March 21, 2019 Category: Biology Source Type: research
Strain measurement of particle-reinforced composites at the microscale: An approach towards concurrent characterization of strain and microstructure
Publication date: June 2019Source: Micron, Volume 121Author(s): Fengguo Zhang, Zhe Chen, Shengyi Zhong, Han Chen, Jun Liu, Qing Yang, Haowei WangAbstractThe mechanical behavior of particle-reinforced composites is largely determined by the interaction between the reinforcing particles and matrix. Although conventional digital image correlation (DIC) allows accurate measurements of strain at microscale, it usually requires preparation of synthetic pattern on the sample surface, which would affect the observation of reinforcing particles. An approach is proposed in this work that relies solely on the reinforcing particles as...
Source: Micron - March 15, 2019 Category: Biology Source Type: research
Editorial Board
Publication date: May 2019Source: Micron, Volume 120Author(s): (Source: Micron)
Source: Micron - March 10, 2019 Category: Biology Source Type: research
Electron beam damage of perfluorosulfonic acid studied by soft X-ray spectromicroscopy
Publication date: Available online 7 March 2019Source: MicronAuthor(s): Lis G.A. Melo, Adam P. HitchcockAbstractScanning transmission X-ray microscopy (STXM) was used to study chemical changes to perfluorosulfonic acid (PFSA) spun cast thin films as a function of dose imparted by exposure of a 200 kV electron beam in a Transmission Electron Microscope (TEM). The relationship between electron beam fluence and absorbed dose was calibrated using a modified version of a protocol based on the positive to negative lithography transition in PMMA [Leontowich et al, J. Synchrotron Rad. 19 (2012) 976]. STXM was used to characterize ...
Source: Micron - March 8, 2019 Category: Biology Source Type: research
