Spring 2018

Building Smarter Windows

  • By Burcu Ozden
  • 21 February 2018

Paul Leu and his student Sajad Haghanifar, a PhD candidate, developed a new type of glass 1,000 times thinner than a human hair which could potentially used as solar panels for smart windows.

While the solar energy industry is expanding — at an average annual rate of 68 percent from 2006 to 2016, according to the Solar Energy Industries Association — solar panels and solar cells still have an efficiency issue.

Paul Leu said, " Any light that is not being absorbed by your solar cell is decreasing the efficiency of your solar panel," and added “Anything you can do to increase your efficiency is good.”

Leu said that the new glass they developed has advantagous of scattering light energy at different angles, giving the light that does bounce off a better chance to be trapped and converted into useable energy

He added, “With these nanostructures, you can get the reflection rate close to zero.” 

Coherent quantum critical dynamics in a driven Bose-Einstein condensate

Speaker(s): 
Cheng Chin
Dates: 
Friday, April 20, 2018 - 3:45pm to 5:00pm

Quantum phase transitions are transitions between distinct many-body ground states, and are of extensive interest in research ranging from condensed matter physics to cosmology. Key features of the phase transitions include a stage with rapidly growing new order, called inflation in cosmology, followed by the formation of topological defects. Based on Bose-Einstein condensates of cesium atoms in a shaken lattices [1], we report the observation of universal scaling of quantum critical dynamics [2], and inflationary dynamics across a quantum phase transition [3]. In particular, the inflation...

Electron Transfer without Overcoming a Barrier

  • By Burcu Ozden
  • 14 February 2018

In the recently accepted paper in Physical Review Letter, Hrvoje Petek and his colleagues investigate the coherent electron transfer from an interface state that forms upon chemisorption of Ag nanoclusters onto graphite to a σ symmetry interlayer band of graphite. Interfacial charge transfer is a fundamental process in heterogeneous and plasmonically enhanced catalysis.

Student Coffee Hour

Speaker(s): 
Multiple Speakers
Dates: 
Friday, February 23, 2018 - 4:00pm to 5:30pm

PQI is holding a coffee hour for our student and postdoc members. Our veteran poster award winners will talk about tricks and ways to prepare an award winner poster. Light refreshments will be served. If you want to be the next poster award winner at PQI2018 come and join us!

Women in Data Science Conference

Speaker(s): 
Multiple Speakers
Dates: 
Friday, March 9, 2018 - 8:00am to 6:00pm

Women in Data Science (WiDS) is an international conference primarily located in Stanford, CA with 80+ satellite conferences across every continent except Antarctica. In 2017, over 75,000 people attended the conference in person and via the livestream and Facebook Live. The purpose of WiDS is to inspire and educate data scientists worldwide, regardless of gender, and support women in the field; the conference features exclusively female speakers from academia and industry.

Speakers include Marlene Behrmann, Maria Mori Brooks, Amelia Haviland, Kathryn Roeder, and Manuela Veloso.

Air Force 2030 Initiative

  • By Burcu Ozden
  • 14 February 2018

On behalf of the Secretary of the Air Force, the Air Force Research Laboratory (AFRL) began a review of the US Air Force science and technology strategy to maintain its technological advantage and meet the national security challenges of 2030 and beyond. To support this effort, AFOSR, the basic research directorate of AFRL, is reaching out to its community across the US to capture a diversity of ideas.

Submit your idea here!

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

Speaker(s): 
Xiaopeng Li
Dates: 
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

Speaker(s): 
Jim Chelikowsky
Dates: 
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

Speaker(s): 
Sudarshan Narayanan
Dates: 
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...

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