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Highlights

Highlights

May 12, 2022
Big Idea: Quantum Leap

Temporally and Spatially Resolved Carrier Dynamics in Organic-Inorganic Hybrid Perovskites

This highlight illustrates a key characterization advance realized at the Center for Dynamics and Control of Materials – temporally resolved light-induced microwave impedance microscopy. 
Z. Shen, K. Luo, S. J. Park, D. Li, M. Mahanthappa, F. S. Bates, K. D. Dorfman, T. P. Lodge & J. I. Siepmann, JACS Au (2022) submitted for publication
Z. Shen, K. Luo, S. J. Park, D. Li, M. Mahanthappa, F. S. Bates, K. D. Dorfman, T. P. Lodge & J. I. Siepmann, JACS Au (2022) submitted for publication
May 10, 2022
UMN Materials Research Science and Engineering Center

Stabilizing A Double Gyroid Network Phase by Blending of LAM and CYL Forming Block Oligomers

Z. Shen, K. Luo, S. Park, D. Li, M. Mahanthappa, F. Bates, K. Dorfman, T. Lodge, I. Siepmann, University of Minnesota
Based on the hypothesis that blending LAM- and CYL-forming block oligomers may yield stable network phases, molecular dynamics simulations are used to study binary blend self-assembly of AB-type diblock (n-tridecan-1,2,3,4-tetraol) and AB2-type miktoarm (5-octyl-tridecan-1,2,3,4-tetraol)  amphiphiles. The AB2-rich and AB-rich blends form double gyroid (DG) networks and perforated lamellae (PL), respectively.
H. Yun, A. Prakash, T. Birol, B. Jalan and K.A. Mkhoyan, Nano Lett. 21, 4357-4364 (2021)
H. Yun, A. Prakash, T. Birol, B. Jalan and K.A. Mkhoyan, Nano Lett. 21, 4357-4364 (2021)
May 10, 2022
UMN Materials Research Science and Engineering Center

Dopant Segregation at Dislocations in an Emerging Oxide Semiconductor

Andre Mkhoyan, Bharat Jalan, Turan Birol, University of Minnesota
Emerging semiconductors such as tin-based oxides have enormous application potential in devices, as they are transparent, support highly mobile electrons, and have wide “energy gaps”. Unlike better developed semiconductors, however, these materials are prone to harboring defects, which can limit essential properties such as electron mobility.
May 9, 2022
Big Idea: Quantum Leap

Host matrix engineering for enhanced molecular qubit coherence

Samuel L. Bayless (University of Chicago), Pratiti Deb (University of Chicago), Daniel W. Laorenza (MIT), Mykyta Onizhuk (University of Chicago), Giulia Galli (University of Chicago, Argonne National Lab), Danna E. Freedman (MIT), David D. Awschalom (University of Chicago, Argonne National Lab)  
At the University of Chicago MRSEC, we demonstrate that controlling the molecular crystal hosting the active qubit is a powerful means for enhancing coherence.
May 9, 2022
Big Idea: Understanding the Rules of Life

Self-assembly of nanocrystals into strongly electronically coupled all-inorganic supercrystals

Igor Coropceanu (University of Chicago), Eric M. Janke (University of Chicago), Joshua Portner (University of Chicago), Danny Haubold (University of Chicago, TechnischeUniversität Dresden), Trung Dac Nguyen (Northwestern University), Avishek Das (University of California, Berkeley), Christian P. N. Tanner (University of California, Berkeley), James K. Utterback (University of California, Berkeley), Samuel W. Teitelbaum (Arizona State University) ̧ Margaret H. Hudson (University of Chicago), Nivedina A. Sarma (University of Chicago), AlexM.Hinkle (University of Chicago), Christopher J. Tassone (SLAC National Accelerator), Alexander Eychmüller (TechnischeUniversität Dresden), David T. Limmer ((University of California, Berkeley, Lawrence Berkeley National Lab), Monica Olvera de la Cruz (Northwestern University), Naomi S. Ginsberg ((University of California, Berkeley, Lawrence Berkeley National Lab), Dmitri V. Talapin (University of Chicago, Argonne National Lab)    
At the University of Chicago MRSEC, we have demonstrated the self-assembly of charged nanocrystals into strongly electronically coupled supercrystals, a feature previously not possible with traditional insulating organic surface ligands.
May 9, 2022
Big Idea: Understanding the Rules of Life

Trainable shear memory in dense suspensions

H. Kim, G. L. Grocke, H. Zhang, S. N. Patel, S. J. Rowan, H. M. Jaeger, manuscript in preparation.         *All at the University of Chicago
A collaboration between the University of Chicago MRSEC groups of Jaeger, Patel, and Rowan showed that the complex modulus of a dense suspension of microparticles can be increased exponentially over several orders of magnitude by applying interval training during oscillatory shear, leading to a structural memory.
May 9, 2022
UC San Diego MRSEC

IRG2: Equitable COVID-19 Vaccines Through Materials Science
The COVID-19 pandemic highlights the need for platform technologies enabling rapid development of vaccines for emerging viral diseases. The current vaccines target the SARS-CoV-2 spike (S) protein and thus far have shown tremendous efficacy. However, the need for cold-chain distribution, a prime-boost administration schedule, and the emergence of variants of concern (VOCs) call for diligence in novel SARS-CoV-2 vaccine approaches.
May 9, 2022
UC San Diego MRSEC

EHRD: Research Immersion in Materials Science & Engineering (RIMSE) Summer Schools

Michael Sailor, Tod Pascal, Andra Tao, Jonathan Pokorski, Stacey Brydges; University of California San Diego
The UCSD MRSEC RIMSE Summer Schools prepare trainees to engage in research, in MRSEC labs and within UCSD at large. The program streamlines high school students, undergraduate students (with a particular focus on transfer students), REU students, and incoming graduate students into research programs in the domains covered by the two IRGs.
Apr 25, 2022
Big Idea: Harnessing the Data Revolution

Heteroanionic Fluoride Doping in Indium Oxide Semiconductors
This work represents the first study to establish fluoride as a universal amorphizing agent in the  indium oxide system, and by inference, may play a similar role in related oxide semiconductor materials.
Apr 25, 2022
Big Idea: Quantum Leap

Tuning Optoelectronic Properties with Mixed-Dimensional Heterostructures
Lattice defects play an important role in determining the optical and electrical properties of monolayer semiconductors such as MoS2. Although the structures of various defects in monolayer MoS2 are well studied, little is known about the properties of the fluorescent defect species and their interaction with molecular adsorbates.

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