Search Results
Accelerating the discovery of improved polarizing agents through simulation requires a proper treatment of the concerted dynamics of thousands of spins over several seconds, far exceeding conventional approaches incorporating only a handful of spins. This was achieved by restricted state space methods and a Monte Carlo optimization algorithm to calculate the enhancements directly, without worrying about the timescale of the interactions. This new approach enabled the calculation of DNP enhancements in systems containing upwards of 50 spins allowing for the importance of the spin diffusion and the diffusion barrier to be determined.
Organolead halide and mixed halide perovskites (CH3NH3PbX3, CH3NH3PbX3–nYn, X and Y = Cl–, Br–or I–), are promising materials for photovoltaics and optoelectronic devices but phase segregation halide ion speciation in mixed halide perovskites remain a challenge. Here we show that both fast MAS and DNP-enhanced solid-state NMR spectroscopy can increase sensitivity while reducing data acquisition time.
Introducing disorder through electron irradiation simultaneously suppresses the magnetic and superconducting transition temperatures. The effects of non-magnetic disorder reveals the non-trivial influence of non-magnetic disorder on coupled superconductivity and magnetism in iron based superconductors.
Van der Waals (vdW) materials are versatile systems for the study of magnetism in low dimensions. Motivated by the potential tunability of the new vdW ferromagnet VI3, a microscopic and thermodynamic study on bulk single crystals were performed under hydrostatic pressure using new techniques developed at Ames Laboratory.
Van der Waals (vdW) heterostructures, which are produced by the precise assemblies of varieties of two-dimensional (2D) materials, have demonstrated many novel properties and functionalities. Here we report a nanoplasmonic study of vdW heterostructures that were produced by depositing ordered molecular layers of pentacene on top of graphene.
DNA origami was deposited and directly imaged using scattering transmission electron microscopy, with spatial resolution adequate for detecting key nanometer-scale structural details. This work presents proof-of-concept results demonstrating that electron microscopy can be used to resolve key elements of DNA-based structures without the use of staining protocols.
Scientists at Ames Laboratory have developed a new microscopy approach for imaging gel nanocomposites in their natural state, which will reveal more useful information about their assembly and properties.
Theoretical & Computational Tools for Modeling of Energy Relevant Catalysis on Multiple Scales
The Critical Materials Institute offers a variety of educational opportunities through several partners, including the Colorado School of Mines and Iowa State University. In addition, CMI experts are available to speak at research conferences, as well as to students of all ages.
CMI education and outreach curated this list of resources for education