Highlights
May 10, 2023
UMN Materials Research Science and Engineering Center
Core-Shell Gyroid in ABC Bottlebrush Block Terpolymers
S Cui, B. Zhang, L. Shen, F. S. Bates, T. P. Lodge (IRG-2)
A principal obstacle to widespread applications of self-assembled network morphologies (NETs) of linear block polymers is access to only limited pore diameters and unit cell dimensions (typically
May 10, 2023
UMN Materials Research Science and Engineering Center
Ferroelectric Superconductivity in a Transition Metal Dichalcogenide
A. Saha, T. Birol, R. Fernandes (IRG-1)
For the first time, a team comprised of two IRG-1 theorists (Birol and Fernandes) working with experimentalists from other institutions (including the Columbia MRSEC) showed the coexistence of ferroelectricity (i.e., electrostatically switchable macroscopic dipole moment) and superconductivity in a two-dimensional superconductor.
May 9, 2023
University of Illinois Urbana-Champaign
Franklin Middle School Visits the I-MRSEC
In February 2023, the I-MRSEC hosted over 40 middle schoolers and teachers from Franklin STEAM Academy, a Champaign public middle school, at Materials Research Lab for a day of hands-on activities and lab visits.
May 9, 2023
University of Illinois Urbana-Champaign
Angstrom-scale imaging of antiferromagnetic Fe2As via 4D-STEM
David G. Cahill, Andre Schleife, Daniel P. Shoemaker, Pinshane Y. Huang, University of Illinois Urbana-Champaign
New electron microscopy technique developed at UIUC show that magnetic order in antiferromagnetic Fe2As can be resolved at angstrom resolution for the first time.
May 3, 2023
Northwestern University
Where Materials Begin and Society BenefitsVertical Organic Electrochemical Transistors and Logic Circuits
IRG-1, Northwestern University MRSEC
By employing redox-active and redox-inactive polymers in a mixed-dimensional heterostructure architecture, Northwestern University MRSEC IRG-1 has achieved vertical organic electrochemical transistors (vOECTs) for the first time.
May 3, 2023
Northwestern University
Accelerated Discovery of Thermoelectric Heteroanionic Materials
IRG-2, Northwestern University MRSEC
Northwestern University MRSEC IRG-2 has developed an efficient theoretical framework based on high-throughput density functional theory calculations and machine learning methods to accelerate the discovery of heteroanionic materials.
May 3, 2023
Big Idea: Future of Work at the Human-Technology Frontier
Partnership in Research and Education in Materials with Navajo Tech: Inspiring STEM Pathways from High School to Graduate Studies
Jennifer Lewis (HU), Thiagarajan Soundappan (NTU), Kathryn Hollar (HU)
The Partnership for Research and Education in Materials between Navajo Technical University and the MRSEC based at Harvard focuses on developing culturally-informed, sustainable pathways into materials science-related careers and advanced studies for Navajo students.
May 3, 2023
Big Idea: Future of Work at the Human-Technology Frontier
Inverse Design of Mechanical Metamaterials with Target Nonlinear Response via a Neural Accelerated Evolution Strategy
Katia Bertoldi (Mechanics) and Chris Rycroft (Applied Math)
A team at the Harvard MRSEC led by Bertoldi and Rycroft has developed a framework to design mechanical metamaterials with target nonlinear response. Neural networks were used to accurately learn the relationship between the geometry and nonlinear mechanical response of these metamaterials.
Jan 13, 2023
Big Idea: NSF 2026
Monitoring the Solution Persistence of Porous Coordination Cages with Diffusion NMR Spectroscopy and Cryogenic Transmission Electron Microscopy
G. Taggart, A. Guliyeva, K. Kim, G. Yap, D. Pochan, T. Epps, E. Bloch (University of Delaware), University of Delaware MRSEC DMR-2011824
Here, diffusion of NMR spectroscopy, transmission electron microscopy, and cryogenic transmission electron spectroscopy were used to characterize porous cages in solution. A combination of the methods can be used to discriminate between assembled cages as opposed to decomposed or isomerized materials while dissolved in polar organic solvents, regardless of the metal cations used in their assembly.
Jan 13, 2023
Big Idea: Quantum Leap
Bi2Se3 Growth on (001) GaAs Substrates for Terahertz Integrated Systems
Y. Lui, S.Law, J.O.Zide, A.Janotti (University of Delaware), A.V.Davydov and G. Bryant (NIST), University of Delaware MRSEC DMR-2011824
The research focus involves understanding how to integrate van der Waals materials like Bi2Se3 with industrially-relevant semiconductor materials like GaAs(001) using molecular beam epitaxy (MBE) for THz applications, as well as determining the chemical composition and bonding type of the Bi2Se3/GaAs(001) interface using density functional theory (DFT) calculations.
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