61 citations · 291 across the 21 of their papers we have counts for
15 papers · 1 filter
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…
A differentiable forward model for the concurrent, multi-peak Bragg coherent x-ray diffraction imaging problem
S. Maddali, T. D. Frazer, N. Delegan +12
We present a general analytic approach to spatially resolve the nano-scale lattice distortion field of strained and defected compact crystals with Bragg coherent x-ray diffraction…
Strain and Crystallographic Identification of the Helically Concaved Surfaces of Nanoparticles
Sungwook Choi, Sang Won Im, Ji-Hyeok Huh +13
Identifying the three-dimensional (3D) crystal-plane and strain-field distributions of nanocrystals is essential for optical, catalytic, and electronic applications. Here, we devel…
Refinements for Bragg coherent X-ray diffraction imaging: Electron backscatter diffraction alignment and strain field computation
David Yang, Mark T. Lapington, Guanze He +8
Bragg coherent X-ray diffraction imaging (BCDI) allows the three-dimensional (3D) measurement of lattice strain along the scattering vector for specific microcrystals. If at least…
Disorder Dynamics in Battery Nanoparticles During Phase Transitions Revealed by Operando Single-Particle Diffraction
Jason Huang, Daniel Weinstock, Hayley Hirsh +9
Structural and ion-ordering phase transitions limit the viability of sodium-ion intercalation materials in grid scale battery storage by reducing their lifetime. However, the combi…
In situ Bragg coherent X-ray diffraction imaging of corrosion in a Co-Fe alloy microcrystal
David Yang, Nicholas W. Phillips, Kay Song +5
Corrosion is a major concern for many industries, as corrosive environments can induce structural and morphological changes that lead to material dissolution and accelerate materia…
In-situ non-equilibrium nanomechanics in a proton-conducting ceramic at low temperatures
Oleg Yu. Gorobtsov, Yumeng Song, Kevin Fritz +6
Nanostructured proton-conducting ceramics (PCCs) have attracted considerable interest as moderate-temperature proton conductors. Structure dynamics during proton conduction, partic…
Interaction and transformation of metastable defects in intercalation materials
O. Yu. Gorobtsov, H. Hirsh, M. Zhang +10
Non-equilibrium defects often dictate macroscopic functional properties of materials. In intercalation hosts, widely used in rechargeable batteries, high-dimensional defects largel…
X-ray nanoimaging of crystal defects in single grains of solid-state electrolyte AlxLi7-3xLa3Zr2O12
Yifei Sun, Oleg Yu. Gorobstov, Linqin Mu +6
All-solid-state lithium batteries promise significant improvements in energy density and safety over traditional liquid electrolyte batteries. The Al-doped AlxLi7-3xLa3Zr2O12 (LLZO…
Annealing of focused ion beam damage in gold microcrystals: An in situ Bragg coherent X-ray diffraction imaging study
David Yang, Nicholas W. Phillips, Kay Song +3
Focused ion beam (FIB) techniques are commonly used to machine, analyse and image materials at the micro- and nanoscale. However, FIB modifies the integrity of the sample by creati…
Gas-induced segregation in Pt-Rh alloy nanoparticles observed by in-situ Bragg coherent diffraction imaging
Tomoya Kawaguchi, Thomas F. Keller, Henning Runge +11
Bimetallic catalysts can undergo segregation or redistribution of the metals driven by oxidizing and reducing environments. Bragg coherent diffraction imaging (BCDI) was used to re…
Nano-scale imaging of the full strain tensor of specific dislocations extracted from a bulk sample
Felix Hofmann, Nicholas W. Phillips, Suchandrima Das +5
Lattice defects play a key role in determining the properties of crystalline materials. Probing the 3D lattice strains that govern their interactions remains a challenge. Bragg Coh…
Phase retrieval for Bragg coherent diffraction imaging at high X-ray energies
Siddharth Maddali, Marc Allain, Wonsuk Cha +6
Coherent X-ray beams with energies keV can potentially enable three-dimensional imaging of atomic lattice distortion fields within individual crystallites in bulk polycry…
Bragg Coherent Modulation Imaging: Strain- and Defect- Sensitive Single Views of Extended Samples
A. Ulvestad, W. Cha, I. Calvo-Almazan +5
Nanoscale heterogeneity (including size, shape, strain, and defects) significantly impacts material properties and how they function. Bragg coherent x-ray imaging methods have emer…
Chrono CDI: Coherent diffractive imaging of time-evolving samples
A. Ulvestad, A. Tripathi, S. O. Hruszkewycz +4
Bragg coherent x-ray diffractive imaging is a powerful technique for investigating dynamic nanoscale processes in nanoparticles immersed in reactive, realistic environments. Its te…