Spring 2019

Lillian Chong Presented Protein-protein Binding Pathway using Fully-continuous, Explicit-solvent Simulations

  • By Huiling Shao
  • 12 February 2019

 

The latest study by Lillian Chong and Ali Saglam in her group demonstrated the power of the weighted ensemble (WE) strategy in enabling explicit-solvent MD simulation of a protein–protein binding process.(Click here for the protein-protein binding simulation video) Their results provide a number of insights regarding the binding mechanism that cannot be obtained by laboratory experiments.

The research by Lillian Chong group appeared in the Royal Society of Chemistry journal Chemical Science (DOI: 10.1039/C8SC04811H). The WE strategy and others like it have great promise in providing insights involving binding kinetics for a variety of research areas, including biophysics, catalysis, protein engineering, and material design.

 

Quantum Day 2019

Speaker(s): 
Quantum Day 2019
Dates: 
Friday, April 12, 2019 - 9:00am

Schedule of Activities

9:30 am: Welcome session (hosted by Jeremy Levy)

9:45 am: Experimental demo (hosted by Gurudev Dutt’s group)

10:15 am: Break & Snacks

10:30 am: Mini Talks

10:30 am: Mini talk 1, David Waldeck

10:45 am: Mini talk 2, Sean Garrett-Roe

11:00 am: Mini talk 3, Thomas Purdy

11:15 am: Mini talk 4, David Pekker

11:30 am: Panel discussion and Lunch with...

Interfacial Coupling and Magnetic Competition in Magnetic and Magnetoelectric Systems

Speaker(s): 
Mikel Holcomb
Dates: 
Thursday, February 7, 2019 - 4:00pm

In the American economic system, competition is a critical driver of performance and innovation. The same can be said for materials physics.  My group focuses on studying a variety of strongly correlated quantum systems, where the competition between charge, spin and orbital degrees of freedom can lead to novel or enhanced properties. It is this sensitivity that makes these materials useful for devices. A good device has a measured property (such as resistance or magnetization) that changes dramatically with an external stimulus (such as current, temperature or magnetic field). Competition is a valuable strategy for creating this interplay of parameters. Magnetic competition in magnetic systems, on the other hand, has often been seen as a hindrance. While it typically decreases the overall net magnetization, I will show that it can be utilized to generate novel phenomena useful for devices, such as giant negative magnetization and enhanced magnetization at small applied fields. While much research on magnetism utilizes large fields to strengthen the net magnetization, most devices will need to utilize small fields. While my group also collaborates on a wide range of other systems (such as topological insulators, delafossites and transition edge sensors), much of our focus has been to grow high-quality films and understand the interfacial interactions in magnetic and magnetoelectric layers. I will discuss our first observation of a magnetoelectric dead layer, which motivated our recent interest and successes in magnetic phase competition and then some of the interesting features we have discovered in complex oxide thin films. 

Universal Themes of Bose-Einstein Condensation conference (UBEC 2019)

Speaker(s): 
Multiple Speakers
Dates: 
Monday, April 1, 2019 - 9:00am

The UBEC conference series addresses broad themes of BEC that cross through all types of condensates, including cold atoms, helium and hydrogen, superconductors, quasiparticle condensation, photons and lasing, and condensation in nuclear physics, astrophysics and cosmology.

The conference will begin with an evening reception Sunday, March 31, and end Friday, April 5, at 3:00 pm. Talks will begin Monday, April 1, promptly at 9:00 am. There will be a poster session on Tuesday, April 2, and conference excursions on the afternoon of Thursday, April 4. The conference banquet will be ...

Highlighted on Science Magazine! Mason Awardee Susan Fullerton Display Benefits of Outsider Perspectives

  • By Huiling Shao
  • 29 January 2019

Susan Fullerton, an assistant professor of chemical and petroleum engineering at the University of Pittsburgh, is one of five winners presented with the 2019 AAAS Marion Milligan Mason Awards for Women in the Chemical Sciences at a 13 December awards ceremony at the American Association for the Advancement of Science headquarters.

She and her team had created a new ion conductor with a particularly unique property: once the transistor was turned on it stayed on, and once it was turned off it stayed off in the absence of a power supply. This enables memory sticks to store information even when they are disconnected from a computer. Fullerton envisions a future where this type of switching could lead to a memory stick that operates on much lower power than those on the market today and to devices with never-before-seen properties, such as one that can be triggered to permanently destroy its data if it falls into the wrong hands.

Quantum Nanophotonics: Engineering Atom-Photon Interactions on a Chip

Speaker(s): 
Dr. Shuo Sun
Dates: 
Monday, February 18, 2019 - 12:00pm

The ability to engineer controllable atom-photon interactions is at the heart of quantum optics and quantum information processing. In this talk, I will introduce a nanophotonic platform for engineering strong atom-photon interactions on a semiconductor chip. I will first discuss an experimental demonstration of a spin-photon quantum transistor [1], a fundamental building block for quantum repeaters and quantum networks. The device allows a single spin trapped inside a semiconductor quantum dot to switch a single photon, and vice versa, a single photon to flip the spin. I will discuss how...

Creating and measuring the elusive Majorana fermions

Speaker(s): 
Dr. Vidya Madhavan
Dates: 
Monday, April 29, 2019 - 4:30pm

Dirac discovered that every fundamental particle must also have a distinct anti-particle which has the opposite charge. When particles and anti-particles meet, they annihilate each other releasing energy. In 1937, Ettore Majorana predicted the existence of a special class of particles where the particle and the anti-particle are identical. However, with the possible exception of neutrinos, so far there are no known fundamental particles that belong to this class. Recently, the possible realization of these exotic Majorana fermions as quasiparticle excitations in in solids has created much...

Materials and Chemical Sciences Research for Quantum Information Science

  • By Huiling Shao
  • 22 January 2019

The DOE SC program in Basic Energy Sciences (BES) announces its interest in receiving applications from single investigators/small groups (up to $500K per year) and from large teams (over $500K per year) for support of experimental and theoretical efforts to advance materials and chemical sciences research for quantum information science (QIS).  Large teams must have multiple investigators and may have multiple institutions. 

Nathaniel Rosi recognized on the Clarivate Analytics as One of the Highly Cited Researchers in 2018

  • By Huiling Shao
  • 22 January 2019

Nathaniel Rosi is included on the list of the Clarivate Analytics website that “recognizes world-class researchers selected for their exceptional research performance, demonstrated by production of multiple highly cited papers that rank in the top 1% by citations for field and year in Web of Science”. This is the third consecutive year that Dr. Rosi has been included on this list. The Highly Cited Researchers list from Clarivate Analytics identifies scientists and social scientists who have demonstrated significant influence through publication of multiple highly cited papers during the last decade.

Plasmon Decay and Hot Carrier Generation in Plasmonic Nano Particles from Ab Initio

Speaker(s): 
Mikael Kuisma
Dates: 
Thursday, January 24, 2019 - 2:00pm

Dr. Mikael Kuisma seeks quantitative and qualitative understanding of nanoscale quantum dynamics, such as collective excitations in functionalized noble metal nanoparticles and hot carrier generation with potential applications from microscopy to photovoltaics. He is also a developer of GPAW electronic structure program, which he further utilized to run large scale parallel models of electron dynamics in nanosystems.

Pages