Featured
Grain-scale deformation of a high entropy alloy using synchrotron high energy diffraction microscopy
New research that exploited the unique strengths of the FAST beamline produced some of the first measurements of individual grain deformation in high entropy alloys. This data can help form accurate predictions of damage and failure processes in these emerging materials, critical for understanding their performance in real-world applications.
In situ spectroscopy as a probe of electrocatalyst performance
Hydrogen fuel cells generally require expensive and scarce platinum catalysts in order to function. Researchers have created highly reactive platinum-nickel nanowires with the potential to reduce the amount of platinum required in fuel cells. Research at PIPOXS examines the atomic-level mechanisms of this catalyst, forming a foundation for the development and commercialization of more efficient fuel cell technology.
Unconventional chiral charge order in kagome superconductor KV3Sb5
Intertwining quantum order and non-trivial topology is at the frontier of condensed matter physics. In a new paper appearing in the journal Nature Materials, a team lead by M. Zahid Hasan from Princeton University reports the discovery of an unconventional chiral charge order in a kagome material, KV3Sb5.
Protein unfolded states populated at high and ambient pressure are similarly compact
This is perhaps the first reported study of the temperature dependence of the dimensions of the high pressure unfolded state of a protein. These measurements strongly support the notion that pressure unfolded proteins do not differ significantly from proteins which are unfolded at atmospheric pressure.
Investigation of porosity, texture, and deformation behavior using high energy X-rays during in-situ tensile loading in additively manufactured 316L stainless steel
A high-energy x-ray study of 316L stainless steel produced by laser powder bed fusion used x-ray tomography to understand porosity in the manufactured samples, and then observe the effect of these pores on the evolution of damage, texture, and strain when the materials are mechanically deformed.
Incommensurate charge order in a low-dimensional superconductor
A team lead by Sara Haravifard from Duke University has conclusively and directly identified the subtle charge density wave phase in TPT emerging below 12K. The CDW couples to the superconducting transition and is suppressed by pressure at a critical point that maximizes the superconducting Tc. The promise of engineered high temperature superconducting materials, which could revolutionize computing, energy, and transportation industries, drives ongoing fundamental research into the interplay between SC and CDW order.
Asking Good Questions - Outreach workshop leads to Critical Thinking
Florianna Blanton, outreach coordinator at CHESS, presented to a group of Cornell Graduate students on Wednesday, March 10. The virtual discussion highlighted the unique ways in which graduate students can perform outreach with teachers and k-12 students in the area.
CHESS user examines material under thermo-mechanical loading - with goal to develop predictive material modeling
Residual stress can have a tremendous effect on the performance and overall lifetime of materials. To understand the lattice strains that result in these stresses, researchers at CHESS are able to probe their samples with high-energy X-rays while simultaneously exposing them to heat, strain, and pressure.