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Highlights

Highlights

Additively manufactured Alnico magnets and 3D microstructure generated using TriBeam tomography.
Additively manufactured Alnico magnets and 3D microstructure generated using TriBeam tomography.
May 16, 2022
University of California, Santa Barbara

Microstructural evolution in additively manufactured magnetic materials

Rottmann, Polonsky, Francis, Emigh, Krispin, Rieger, Echlin, Levi, Pollock (UC Santa Barbara)
Samples of Alnico magnets were printed by selective laser melting, and their microstructure was investigated in 3D at the mm3-scale using the femtosecond-laser enabled TriBeam microscope.
Twisted bilayer WTe2: a Moiré Luttinger Liquid in Two-Dimensions
Twisted bilayer WTe2: a Moiré Luttinger Liquid in Two-Dimensions
May 16, 2022
Big Idea: Quantum Leap

Twisted bilayer WTe2: a Moiré Luttinger Liquid in Two-Dimensions

Pengjie Wang1, Guo Yu1, Yves H. Kwan2, Yanyu Jia1, Shiming Lei1, Sebastian Klemenz3, F. Alexandre Cevallos1, Ratnadwip Singha1, Trithep Devakul4, Kenji Watanabe5, Takashi Taniguchi5, Shivaji L. Sondhi2, Robert J. Cava1, Leslie M. Schoop1, Siddharth A. Parameswaran2 and Sanfeng Wu1 1Princeton University 2University of Oxford 3Fraunhofer Research Institution for Materials Recycling and Resource Strategies IWKS, Hanau, Germany 4Massachusetts Institute of Technology 5National Institute for Materials Science, Tsukuba, Japan
In an experiment related to the theory of Luttinger Liquids (LLs), a team led by Princeton University physicists and chemists reports the realization of a one-dimensional linear array of LLs in a moiré superlattice – a new quantum state in an engineered structure made from a known material.
Multiscale computational design approach to identify magnetic alloys with prescribed properties.
Multiscale computational design approach to identify magnetic alloys with prescribed properties.
May 16, 2022
University of California, Santa Barbara

Tuning magnetic antiskyrmion stability in tetragonal inverse Heusler alloys

Kitchaev, Van der Ven (UC Santa Barbara)
A computational approach was implemented to design Mn2XY tetragonal inverse Heusler alloys that host magnetic antiskyrmions whose stability are sensitive to elastic strain.
Enhancing lithium-ion transport in solid-state polymer electrolytes using electron-deficient imidazole ligands. Our study indicates that steric and electronic ligand properties are critical for enhancing lithium-ion diffusion and transport.
Enhancing lithium-ion transport in solid-state polymer electrolytes using electron-deficient imidazole ligands. Our study indicates that steric and electronic ligand properties are critical for enhancing lithium-ion diffusion and transport.
May 16, 2022
University of California, Santa Barbara

Electron-Deficient Imidazoles in Solid-State Polymer Electrolytes

Andrei Nikolaev, Peter M. Richardson, Shuyi Xie, Luana Llanes, Seamus D. Jones, Hengbin Wang, Rachel A. Segalman, Raphaële J. Clément, and Javier Read de Alaniz  (UC Santa Barbara)
Solid-state polymer electrolytes offer a safer alternative to traditional lithium-ion batteries based on organic electrolytes. However, current benchmark polymer electrolytes lack ion transport selectivity (t+ = 0.2) which limits their commercial use. We demonstrate the enhancement of lithium-ion transport (t+ = 0.48) of PMS-based polymers by taking advantage of the steric and electronic properties of imidazole ligands.
Multiphase droplet of flexible single-stranded DNA (green) and rigid double-stranded DNA (red), demonstrating the key role of mechanical properties in phase behavior. Right: Water-in-oil emulsion droplets containing DNA coacervate droplets; we have invented a method to quantify the phase diagram from such images.
Multiphase droplet of flexible single-stranded DNA (green) and rigid double-stranded DNA (red), demonstrating the key role of mechanical properties in phase behavior. Right: Water-in-oil emulsion droplets containing DNA coacervate droplets; we have invented a method to quantify the phase diagram from such images.
May 16, 2022
University of California, Santa Barbara

Selecting for Phase-Separating Nucleic Acid Coacervates

Complex coacervation is a process in which oppositely charged macro-molecules in solution condense into dense liquids. While primarily driven by charge effects or, with DNA, basepairing, other macromolecular traits are likely to have strong effects. This Seed project leverages modern tools of DNA sequence control and biochemistry to study the fundamental physical principles underlying coacervation,
The BioPacific MIP SAXS/WAXS beamline. The six-meter long platform instrument is custom designed and constructed by a research and development team that has been supporting the MRL X-ray Diffraction facility. Many design elements were inspired by the original SAXS/WAXS instrument built by the same team in the MRL X-ray Facility.
The BioPacific MIP SAXS/WAXS beamline. The six-meter long platform instrument is custom designed and constructed by a research and development team that has been supporting the MRL X-ray Diffraction facility. Many design elements were inspired by the original SAXS/WAXS instrument built by the same team in the MRL X-ray Facility.
May 16, 2022
University of California, Santa Barbara

Development of a high brilliance laboratory SAXS/WAXS beamline

In collaboration with the newly established NSF BioPacific MIP, the MRL X-ray facility team spearheaded the development of an SAXS-WAXS (small and wide angle x-ray scattering) laboratory beamline with unparalleled beam brightness for high throughput characterization of biopolymers and nanostructures.
Strong coupling between a topological insulator and a III-V heterostructure at terahertz frequency
Strong coupling between a topological insulator and a III-V heterostructure at terahertz frequency
May 16, 2022
Big Idea: Quantum Leap

Strong coupling between a topological insulator and a III-V heterostructure at terahertz frequency

D. Q. To, M.F. Doty, S. Law, J.M.O. Zide, A. Janotti (University of Delaware) and G.W. Bryant (NIST), University of Delaware MRSEC DMR-2011824
This research focuses on theoretical prediction of strong coupling between the THz excitations in a topological insulator (TI) and a III-V quantum well, providing a potential material platform for optoelectronic device applications in the THz frequency domain.
Computational Design of Tetrahelical Peptide Bundle Variants Spanning a Wide Range of Charge States
Computational Design of Tetrahelical Peptide Bundle Variants Spanning a Wide Range of Charge States
May 16, 2022
Big Idea: Synthetic Materials Biology, Understanding the Rules of Life

Computational Design of Tetrahelical Peptide Bundle Variants Spanning a Wide Range of Charge States

R. Guo (University of Pennsylvania), N. Sinha, R. Misra, C. Kloxin, G. Jensen, D. Pochan (University of Delaware), J. Saven (University of Pennsylvania) [University of Delaware MRSEC DMR-2011824]
The resarch focus of this effort involved computationally designing a homotetrameric helical bundle to have a variety of net charges. The charged bundle variants showcase how charge state can be controlled for a common peptide structure, as well as the properties of the fibril nanomaterials constructed by the peptide building blocks.
Spatiotemporal control of active materials
Spatiotemporal control of active materials
May 14, 2022
Big Idea: Understanding the Rules of Life

Spatiotemporal control of active materials

Biological cells control spatial and temporal generation of active stresses to achieve diverse sought-after functionalities ranging from motility to cell division. Motivated by these observations IRG2 goal is to control of spatiotemporal patterns of active stresses and to endow soft materials with lifelike functionalities.
Self-assembling DNA Origami Shells
Self-assembling DNA Origami Shells
May 14, 2022
Big Idea: Understanding the Rules of Life

Self-assembling DNA Origami Shells

S. Fraden, M. Hagan, W. Rogers: Brandeis University; G. Grason: U. Mass. Amherst; H. Dietz: Tech. Universität München
The self-assembly of biological molecules into large, but finite-size, superstructures is fundamental to life. A grand challenge for colloidal self-assembly is to produce colloidal monomers with valence-limited interactions, that have arbitrary angles and strengths, to produce structures with the precision, complexity and functionality of biological assemblies.

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