Spring 2018

Happy International Day of Women and Girls in Science

  • By Burcu Ozden
  • 9 February 2018

The International Day of Women and Girls in Science, celebrated each year on 11 February, was adopted by the United Nations General Assembly to promote full and equal access to and participation in science for women and girls. This Day is a reminder that women and girls play a critical role in science and technology communities and that their participation should be strengthened. The celebration is led by UNESCO and UN-Women, in collaboration with institutions and civil society partners that promote women and girls' access to and participation in science.

Machine learning approaches to entangled quantum states

Xiaopeng Li
Friday, March 16, 2018 - 1:30pm to 2:30pm

Artificial neural networks play a prominent role in the rapidly growing field of machine learning and are recently introduced to quantum many-body systems. This talk will focus on using a machine-learning model, the restricted Boltzmann machine (RBM) to describe entangled quantum states. Both short- and long-range coupled RBM will be discussed. For a short-range RBM, the associated quantum state satisfies an entanglement area law, regardless of spatial dimensions. I will present our recently constructed exact RBM models for nontrivial topological phases, including a 1d...

"Seeing'' The Covalent Bond: Simulating Atomic Force Microscopy Images

Jim Chelikowsky
Monday, February 19, 2018 - 10:30am to 11:30am

Advances in atomic force microscopy (AFM) have made it possible to achieve unprecedented images of covalent bonds, in some cases even to resolve the bond order in polycyclic aromatics.   However, fundamental questions remain about interpreting the images and modeling the AFM tip.  For example, the bright spots in non-contact AFM images can have a close correspondence to the atomic structure of a given specimen, but there can be contrast changes with tip height that cannot be interpreted directly by atomic positions.  While the nature of the tip can be crucial in...

AVS Western Pennsylvania Chapter Student Poster Session & Lab Tour

Sudarshan Narayanan
Friday, February 23, 2018 - 6:00pm to 9:00pm

The AVS Western Pennsylvania Chapter invites you to attend their meeting that will have a guest speaker and student poster session, as well as a tour of the Claire and John Bertucci Nanotechnology Laboratory and Eden Hall Foundation Cleanroom.

There will be multiple $200 student awards based on their poster presentations.  The Guest Speaker is Sudarshan Narayanan who is a Vitro Glass R&D Engineer.  The subject for the talk is “Large Area Thin Film Coatings and Processes for Architectural Glazings and Other Applications”.

Abstracts for the...

Request for Information: Impacts From and to Quantum Information Science in High Energy Physics

  • By Burcu Ozden
  • 24 January 2018

The Department of Energy is seeking input on how quantum information science could address the needs of high-energy physicists and vice versa. DOE would like specific information on “organizational and assessment considerations.” Submissions are due by February 12, 2018.

Interested persons may submit comments by email only. Comments must be sent to QISandHEP-RFI@science.doe.gov with the subject line “Quantum Information Science and HEP RFI”. Any attachments must be in one of the following formats: ASCII; Word; RTF; or PDF.

Deadline: February 12, 2018.

Quantum Phenomena in Two-Dimensional Materials Driven by Atomic Scale Modifications

Jyoti Katoch
Monday, February 19, 2018 - 4:30pm to 5:30pm

The extreme surface sensitivity of two-dimensional (2D) materials provides an unprecedented opportunity to engineer the physical properties of these materials via changes to their surroundings, including a substrate, adsorbates, defects, etc.  In particular, the decoration of the 2Dmaterial with adatoms can be utilized to tailor material properties and induce novel quantum phenomena. In this context, first I will discuss the case of 2D semiconducting transition metal dichalcogenides (TMDs), wherein new electronic phenomena such as tunable bandgaps and strongly bound...

Current Instability in a Driven 2D Electron Liquid Probed by Nanoscale Magnetometry

Javier Sanchez-Yamagishi
Thursday, February 15, 2018 - 4:30pm to 5:30pm

A moving fluid can become unstable in the presence of an obstruction, leading to a flow pattern that fluctuates in time due to nonlinear dynamics.  It has been recently found that some materials host electrons that behave like a collective fluid. In particular, experiments with graphene electrons have demonstrated linear hydrodynamic phenomena, such as viscous drag at sample boundaries, but nonlinear effects have yet to be reported.  We observe a AC current instability that develops when driving a DC current through a graphene device in the electron hydrodynamic regime...

Workshop on Electron Probe MicroAnalysis

Vern Robertson, Peter McSwiggen
Tuesday, March 20, 2018 - 9:30am to 3:00pm

This workshop is sponsored by PINSE/NFCF, JEOL and Three Rivers Microscopy Society (3RMS).  

The workshop will provide an introduction to the world of electron microprobe and also cover some more advanced applications such as low keV analysis and effects of contamination.  Some of these topics are also of interest to EDS users. This workshop is for anyone, and we welcome those who have zero knowledge of EPMA but might be interested in applications to your own research.  EPMA is similar to EDS, but offers more elemental precision, with higher peak to background ratios and easier...

Finding Funding: Resources & Opportunities for New Researchers

Ryan Champagne
Thursday, January 25, 2018 - 10:00am to 11:00am

An introductory session to Pivot led by Ryan Champagne from the Office of Research and Robin Kear from the University Library System. The hands-on session will provide an overview of this resource and how it may be used to find funding and collaboration opportunities to support your research. Additional resources related to funding competitions coordinated within the University, as well as funding programs for early career faculty, will also be presented.