Dr Reza Kashtiban

I completed my BSc in physics (Hon) at Sharif University of Technology (Iran) and MSc in solid state physics (1^st Hon) at Urmia University (Iran).I held a permanent position and worked as a researcher in the Institute of Standard and Industrial Research of Iran, the sole organization in the country that can lawfully develop and designate official standards for products and services, until 2007. In April 2007, I moved to Material Science Centre at the University of Manchester to complete my PhD programme under supervision of Dr Ursel Bangert. The title of my PhD research was ”Structural and composition Properties of Semiconductor Nanostructures”. This research was part of a bigger project founded by EPSRC and I collaborated with several research groups, worldwide. I joined Warwick Centre for Analytical Sciences at the University of Warwick in July 2010. I am currently holding postdoctoral research fellow position.

Research Interests

My research focuses on the study of structural and compositional properties of nanomaterials through employing Transmission Electron Microscopy (TEM) and Scanning Transmission Electron Microscopy (STEM) techniques. I have extensive experience in analysing compositional properties of semiconductor nanostructures through Electron Energy Loss Spectroscopy (EELS) technique both in Plasmon and core loss regimes. Employing, Geometric Phase Analysis, Kramers Kroning technique in plosmon region ,Exit Wave Reconstruction to insight structure/ composition of nanostructures to extractct quantitave information of the nanomaterials. Currently I am working on structural and compositional characterisation of nanostrucured carbon based materials( filled nantubes, Graphene Oxide and Graphene, complex oxides and energy storage materials using various electron microscopy techniques under supervision of Dr Jeremy Sloan.

HAADF image of Er-doped Si-NCs IN silica, Er N4,5, Si L1, O K EELS intensity maps; (top right) HR-STEM and and In M5 signal intensity in a In(Ga)As/GaAs QD; (bottom left) EELS core loss spectra on a Er-doped Si-NC and from Silica matrix together with HAADF image and (bottom right) extracted EELS spectra in Plasmon region

GPA of QDs1

The strain map in growth (left) and in-plane (right) direction of a burried InAs/GaAs QD calculated by geometric phase analysis(using STEM_CELL software)

Research Collaborations

I have collaborated with several research groups, worldwide: For Er-doped Si nanocrystals structure Dr Andy Knight, McMaster University (Canada), Dr Russell Gwilliam University of Surrey, Prof. Matthew Halsall the University of Manchester. In the study of InAs/GaAs quantum dots Prof. Mohamed Missous, the University of Manchester and SuperSTEM team. For the gallium nitride based materials Prof. David Mowbray the University of Sheffield and Dr Anabela Rolo University of Minho in Portugal for the Ge and SiGe nanocrystals in alumina and silica systems.