32 citations · 70 across the 6 of their papers we have counts for
7 papers
Manipulating Metastability: Quenched Control of Topological Defects in Multiferroics
Nimish P. Nazirkar, Sowmya Srinivasan, Ross Harder +1
The topological properties of quasiparticles, such as skyrmions and vortices, have the potential to offer extraordinary metastability through topological protection, and drive moti…
Enhanced piezoelectric response at nanoscale vortex structures in ferroelectrics
Xiaowen Shi, Nimish Prashant Nazirkar, Ravi Kashikar +13
The piezoelectric response is a measure of the sensitivity of a material's polarization to stress or its strain to an applied field. Using in-operando x-ray Bragg coherent diffract…
Multi-wavelength coherent diffractive imaging
Erik Malm, Edwin Fohtung, Anders Mikkelsen
Coherent diffractive imaging is a technique that recovers the sample image by numerically inverting its diffraction pattern. We propose a generalization of this method for the inve…
A Shack-Hartmann sensor for single-shot multi-contrast imaging with hard X-rays
Tomy dos Santos Rolo, Stefan Reich, Dmitry Karpov +5
An array of compound refractive X-ray lenses (CRL) with 20x20 lenslets, a focal distance of 20 cm and a visibility of 0.93 is presented. It can be used as a Shack-Hartmann sensor f…
Probing the three-dimensional strain inhomogeneity and equilibrium elastic properties of single crystal Ni nanowires
E. Fohtung, J. W. Kim, Keith T. Chan +3
We employ three dimensional x-ray coherent diffraction imaging to map the lattice strain distribution, and to probe the elastic properties of a single crystalline Ni (001) nanowire…
On the Computation and Applications of Bessel Functions with Pure Imaginary Indices
A. A. Matyshev, E. Fohtung
Bessel functions with pure imaginary index (order) play an important role in corpuscular optics where they govern the dynamics of charged particles in isotrajectory quadrupoles. Re…