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Event Date Summary
Observation Of Interlayer Phonons in Transition Metal Dichalogenide Atomic Layers and Heterostructures – Rui He Mon. May 2nd, 2016
12:30 pm-1:30 pm

Interlayer phonon modes in atomically thin transition metal dichalcogenide (TMD) heterostructures were observed for the first time. We measured the low-frequency Raman response of MoS2/WSe2 and MoSe2/MoS2 heterobilayers. We discovered a distinctive Raman mode (30 – 35 cm-1) that cannot be found in any individual monolayers (see Fig. …Read more.

The 17 Position Knob: Tuning Interactions With Rare Earths – Paul C. Canfield Mon. April 18th, 2016
12:30 pm-1:30 pm

Physicists see the rare earth group of elements as a powerful tool for tuning the properties of materials. Choice or control of rare earths can be used to modify (i) the size of the unit cell, (ii) the size of the local moment and degree of coupling, (iii) the size and direction of magnetic anisotropy, (iv) the amount of entropy that can be removed at low temperatures, (v) the degree of band filling, and / or (vi) the degree of hybridization. …Read more.

Mapping the Phase Diagram of a One-Dimensional Topological Superconductor – Sergey Frolov Mon. April 11th, 2016
12:30 pm-1:30 pm

Download the abstract Tunneling spectroscopy measurements on one-dimensional superconducting hybrid materials have revealed signatures of Majorana fermions which are the edge states of a bulk topological superconducting phase. We couple strong spin-orbit semiconductor InSb nanowires to conventional NbTiN superconductors to obtain additional signatures of Majorana fermions and to explore the magnetic-field driven topological phase transition. …Read more.

Nanoscopic Manipulation and Nanoimaging of Liquid Crystals – Charles Rosenblatt Mon. April 4th, 2016
12:30 pm-1:30 pm

Liquid crystals present a remarkable array of fascinating physical phenomena, and are now a >200 billion dollar world-wide industry. As liquid crystals most often are housed in a closed cell or sit atop a substrate, the treatment of the substrate plays a pivotal role. …Read more.

Nanoscopic Manipulation and Nanoimaging of Liquid Crystals – Charles Rosenblatt Mon. April 4th, 2016
12:30 pm-1:30 pm

Liquid crystals present a remarkable array of fascinating physical phenomena, and are now a >200 billion dollar world-wide industry. As liquid crystals most often are housed in a closed cell or sit atop a substrate, the treatment of the substrate plays a pivotal role. …Read more.

Nanomaterials in Liquid Crystal Mediated Interactions – Rajratan Basu Mon. March 28th, 2016
4:00 pm-5:00 pm

In liquid crystals (LC) the effect of nonmesogenic guest-nanoparticles on the LC’s bulk properties often rests on the molecular identification at the nanoscale in order to share and disseminate the `information’ coded into the nanostructure of the nanoparticles. …Read more.

APS March Meeting Mon. March 14th, 2016
12:30 pm-1:30 pm

…Read more.

Preview APS March Meeting Talks – Graduate Students Thu. March 10th, 2016
11:00 am-12:00 pm

Sukrit Sucharitacul, Few-layer III-VI and IV-VI 2D semiconductor transistorsShuhao Liu, Imaging the long diffusion lengths of photo-generated carriers in mixed halide perovskite films
Shuhao Liu, Imaging the long diffusion lengths of photo-generated carriers in mixed halide perovskite films Robert Badea, Magneto-optical mapping of the domain wall pinning potential in ferromagnetic films
Robert Badea, Magneto-optical mapping of the domain wall pinning potential in ferromagnetic films Michael Wolf, Coupling a driven magnetic vortex to individual nitrogen-vacancy spins for fast, nanoscale addressability and coherent manipulation
Michael Wolf, Coupling a driven magnetic vortex to individual nitrogen-vacancy spins for fast, nanoscale addressability and coherent manipulation …Read more.

FMR-Drive Pure Spin Transport in Metals and Magnetic Insulators – Fengyuan Yang Mon. March 7th, 2016
12:30 pm-1:30 pm

Spintronics relies on the generation, transmission, manipulation, and detection of spin current mediated by itinerant charges or magnetic excitations. Ferromagnetic resonance (FMR) spin pumping is a powerful technique in understanding pure spin current. …Read more.

Tailored Radiative Processes of Quantum Dots and 2D Materials – Maiken H. Mikkelsen Mon. February 29th, 2016
4:00 pm-5:00 pm

Metal-dielectric nanocavities have the ability to tightly confine light to small mode volumes resulting in strongly increased local density of states. Placing fluorescing molecules or semiconductor materials in this region enables wide control of radiative processes including absorption and spontaneous emission rates, quantum efficiency, and emission directionality. …Read more.

Aspects of Photonic Topological Insulators – Mikael Rechtsman Mon. February 22nd, 2016
12:30 pm-1:30 pm

I will present the observation of the topological protection of light – specifically, a photonic Floquet topological insulator. Topological insulators (TIs) are solid-state materials that are insulators in the bulk, but conduct electricity along their surfaces – and are intrinsically robust to disorder. …Read more.

Combined First-Principles Molecular Dynamics / Density-Functional Theory Study of Ammonia Oxidation on Pt(100) Electrode – Dmitry Skachkov Mon. February 1st, 2016
12:30 pm-1:30 pm

A combined first-principles molecular dynamics/density functional theory study of the electrooxidation of ammonia is conducted to gain an atomic-level understanding of the electrocatalytic processes at the Pt(1 0 0)/alkaline solution interface and to probe the mechanistic details of ammonia electrooxidation on the metal surface. …Read more.


Page last modified: May 18, 2016