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Highlights

Highlights

This CEM-nucleated team was awarded a major DARPA grant in February 2018 to work on skyrmion materials.
This CEM-nucleated team was awarded a major DARPA grant in February 2018 to work on skyrmion materials.
May 7, 2018
Ohio State University

Proto-IRG: Spin Textures in Chiral Magnetic Materials

A. Ahmed, J. Rowland, B. Esser, S. Dunsiger, D. McComb, M. Randeria, R. Kawakami, Phys. Rev. Materials, 2, 041401 (2018).
Experimental evidence in MBE-grown FeGe thin films for “chiral bobbers”, topological spin texture that exist near an interface. Theoretical modeling  predicts stable chiral bobbers in materials with both bulk and interfacial DMI. Lorentz TEM imaging of skyrmions in FeGe thinned crystals Topological Hall effect measurements of skyrmions in FeGe thin films and novel oxide heterostructures of SrIrO3/SrRuO3. Development of microwave absorption spectroscopy to probe skyrmion materials.
Physics of Emergent Materials Workshop (POEM)
Physics of Emergent Materials Workshop (POEM)
May 7, 2018
Ohio State University

Physics of Emergent Materials Workshop (POEM)

R. Page and  J. Katoch, Ohio State University
The CEM Internal Advisory Council, a grassroots committee of students and postdoctoral researchers, created POEM to inform the Center’s direction and improve the educational and research experiences of CEM students. 
Nanoparticles For Delivery of DNA Therapeutics
Nanoparticles For Delivery of DNA Therapeutics
May 7, 2018
University of Colorado at Boulder

Nanoparticles For Delivery of DNA Therapeutics

A. Harguindey1, D.W. Domaille1, B.D. Fairbanks1, J. Wagner1, C.N. Bowman1,2, J.N. Cha1,2   1 Chemical and Biological Engineering - University of Colorado, Boulder, CO 80309, USA. 2 Materials Science and Engineering Program - University of Colorado, Boulder, CO 80309, USA.
Many advanced drugs acting in cells are made of DNA fragments.  Since DNA is biologically active and destroyed if not recognized, a major challenge for this kind of medicine is getting the DNA into selected target cells.  SMRC researchers have found that soap-like molecules that form nanometer-size spherical particles in water and that have a DNA-like component as part of their molecular structure can act as effective carriers of therapeutic DNA for cancer treatment.
A Double Helix of Bent Molecular Dimers
A Double Helix of Bent Molecular Dimers
May 7, 2018
University of Colorado at Boulder

A Double Helix of Bent Molecular Dimers

M. R. Tuchband1, M. Shuai1, K. A. Graber1, D. Chen5, C. Zhu3, L. Radzihovsky1, A. Klittnick1, L. Foley1, A. Scarbrough1, J. H. Porada6, M. Moran7, J. Yelk1, D. Bedrov4, E. Korblova2, D.M. Walba2, A. Hexemer3, J. E. Maclennan1, M. A. Glaser1, N. A. Clark1 1. Department of Physics - University of Colorado, Boulder, CO 80309, USA. 2. Department of Chemistry and Biochemistry - University of Colorado, Boulder, CO 80309, USA. 3. Lawrence Berkeley National Lab, Berkeley, CA 4. Materials Science, University of Utah 5. Zhejiang University, Hangzhou, China 6. University of Stuttgart, Stuttgart, Germany 7. Dartmouth College, Hanover, NH 03755, USA
Simple bent molecules like CB7CB perform some seemingly miraculous tricks when packed together to make a liquid. Because the molecular ends and middles attract each other, the molecules spontaneously knit themselves together into double stranded chains many units long, like the twisted rope in the graphic. Understanding such self-assembly is key to  creating new applications for soft materials like liquid crystals and polymers.
A Double Helix of Nucleic Acid Monomers
A Double Helix of Nucleic Acid Monomers
May 7, 2018
University of Colorado at Boulder

A Double Helix of Nucleic Acid Monomers

G.P. Smith1, T.P. Fraccia2, M. Todisco2, G. Zanchetta2, J. Yelk1, C. Zhu3, E. Hayden1, T. Bellini2, M.A. Glaser1, N.A. Clark1  1. Department of Physics - University of Colorado, Boulder, CO 80309, USA. 2. University of Milan, Milan Italy 3. Lawrence Berkeley National Lab, Berkeley, CA
The DNA double helix is a universally familiar pairing of two polymer chains in water, joined into a duplex by the selective binding of side group bases, the sequence of which contains and transmits genetic information.
Figure 1: Rabi oscillations of a silicon donor spin-ensemble demonstrate strong coupling and an ideal implementation of the Tavis-Cummings model.
Figure 1: Rabi oscillations of a silicon donor spin-ensemble demonstrate strong coupling and an ideal implementation of the Tavis-Cummings model.
May 4, 2018
Princeton University

Strong Coupling of a Superradiant Spin Ensemble

B. C. Rose1, A. M. Tyryshkin 1, H. Riemann 2, N. V. Abrosimov 2, P. Becker 3, H.-J. Pohl 4, M. L. W. Thewalt 5, K. M. Itoh 6, and S. A. Lyon 1 1 Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA 2 Leibniz-Institut für Kristallzüchtung, 12489 Berlin, Germany 3 PTB Braunschweig, 38116 Braunschweig, Germany 4 VITCON Projectconsult GmbH, 07745 Jena, Germany 5 Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6 6 School of Fundamental Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohuku-ku, Yokohama 223-8522, Japan
The Princeton MRSEC has leveraged the low disorder and long coherence of states in a pristine silicon crystal to experimentally realize the Tavis-Cummings model, a fundamental model in quantum optics. The team had previously shown that the quantum state of the magnetic moment (spin) of electrons bound to impurities in silicon can be stored for several seconds.
A schematic of the experiment in which a spin polarized STM is used to probe spin signature of Majorana zero mode at the end of the chain.
A schematic of the experiment in which a spin polarized STM is used to probe spin signature of Majorana zero mode at the end of the chain.
May 4, 2018
Princeton University

Majorana Spin Diagnostics

Sangjun Jeon 1, Yonglong Xie 1, Jian Li 1, 2, 3, Zhijun Wang 1, B. Andrei Bernevig 1, Ali Yazdani 1 1 Joseph Henry Laboratories and Department of Physics, Princeton University, Princeton, NJ 08544, USA. 2 Institute for Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, Zhejiang, China. 3 Westlake University, Hangzhou, Zhejiang, China.  
The Princeton MRSEC has detected a unique quantum property of an elusive particle, the Majorana fermion that is notable for behaving simultaneously like matter and antimatter. Using enhanced scanning tunneling microscopy techniques, the team captured signals from the Majorana particle at both ends of an atomically thin iron wire stretched on the surface of a crystal of lead.
AMRS participants attend a plenary talk by Nobel Laureate Jean Marie Lehn in Gaborone, Botswana, entitled “Addressing Africa’s Challenges through Materials Development.”
AMRS participants attend a plenary talk by Nobel Laureate Jean Marie Lehn in Gaborone, Botswana, entitled “Addressing Africa’s Challenges through Materials Development.”
May 4, 2018
Northwestern University

International Conference of the African Materials Research Society

The Northwestern University MRSEC supports a diverse suite of international collaborations and outreach activities. For example, the Center provided support for 10 students and postdoctoral research associates to attend the 9th International Conference of the African Materials Research Society (AMRS) on December 11-14, 2017 in Gaborone, Botswana.
Schematic illustration of the Ultrasound Bioprobe. Customized piezo-transducers underneath the sample and the cantilever provide the flexural vibrations. The atomic force microscope mechanical probe detects the subsurface mechanical contrast.
Schematic illustration of the Ultrasound Bioprobe. Customized piezo-transducers underneath the sample and the cantilever provide the flexural vibrations. The atomic force microscope mechanical probe detects the subsurface mechanical contrast.
May 4, 2018
Northwestern University

Facilities Development: Combined Ultrasonic and Scanning Probe Imaging

In addition to providing access to state-of-the-art commercially available instruments, the Northwestern University MRSEC Shared Facilities also participate in the development of new experimental methods and tools. In particular, the Ultrasound Bioprobe has been developed that combines the noninvasive nature and sensitivity of ultrasound waves with a near-field atomic force microscope mechanical probe that provides high phase sensitivity and mechanical contrast of the scattered ultrasound wave.
Chicago Public School students participate in a discussion of the science and events relevant to Copenhagen before the matinee performance at Northwestern University.
Chicago Public School students participate in a discussion of the science and events relevant to Copenhagen before the matinee performance at Northwestern University.
May 4, 2018
Northwestern University

Engineering Transdisciplinary Outreach Program in the Arts (ETOPiA)

Engineering Transdisciplinary Outreach Program in the Arts (ETOPiA) is a Northwestern University MRSEC education and outreach program that uses theater and film media to inspire a cross-disciplinary dialogue about the role of science and technology in society and to highlight some of the ethical and moral implications of scientific and technological progress.

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