[BNC-all] BNC Virtual Faculty Seminar Series: Speaker - Xiulin Ruan - Nov. 19th @ 12noon via Zoom

[Turner, Jaime J]

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The BNC Virtual Faculty Seminar Series is designed to provide faculty a platform to present an overview of their research and the opportunity for collaborative discussion with other BNC faculty and researchers across six colleges and 15 academic units.

Xiulin Ruan
Professor, School of Mechanical Engineering

November 19th, 2020 | 12:00pm
Join Zoom: https://purdue-edu.zoom.us/j/93857631004


Title: Pushing Boundaries of Thermal Transport and Sustainable Energy: From First Principles Predictions to Scalable Applications

Abstract: This talk will overview our recent innovations in thermal transport and sustainable energy, by pushing the boundaries ranging from fundamental first principles predictions to scalably manufactured systems. The first part of the talk will cover predictive first principles and molecular dynamics simulations of thermal conductivity and optical (or thermal radiative) properties. In particular, we establish four-phonon scattering as an unexpected significant mechanism affecting thermal conductivity of nearly all materials at high temperature, and 2D materials, low thermal conductivity materials, and certain high-thermal conductivity materials even at room temperature.1 In addition, four-phonon scattering can have significant or leading role in determining infrared optical properties of dielectrics.2 For complex crystals, the conventional phonon mean free path concept is insufficient, and we propose a two-phonon transport theory to better describe their thermal transport.3 We further show that machine learning can be used to dramatically accelerate the predictive design of energy nanomaterials.4 The second part of the talk will cover our development of the first commercial-like particle-matrix radiative cooling paint that can cool below the ambient temperature under direct sunlight.5 It is achieved via several approaches distinct from commercial paints: the use of the wide bandgap CaCO3 fillers, a high particle volume concentration of 60%, and a broad size distribution. Radiative cooling paints can have broad implications from saving energy to combatting climate change.6 The talk will close by exploring future directions and collaboration opportunities.

1. Feng et al., Phys. Rev. B 96, 161201(R) (2017)<https://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.161201>.  2. Yang et al., Phys. Rev. B 101, 161202(R) (2020)<https://journals.aps.org/prb/abstract/10.1103/PhysRevB.101.161202>.  3. Luo et al., Nat. Commun. 11, 2554 (2020)<https://www.nature.com/articles/s41467-020-16371-w>.  4. Chowdhury et al., Nano Energy 69, 104428 (2020)<https://www.sciencedirect.com/science/article/abs/pii/S2211285519311449>.  5. Li et al, Cell Rep. Phys. Sci. 1, 100221 (2020)<https://www.sciencedirect.com/science/article/pii/S2666386420302368>. 6. BBC NEWS<https://www.bbc.com/news/science-environment-54632523>

[cid:image002.jpg at 01D6BC46.697A8CA0]Bio: Dr. Xiulin Ruan is a professor in the School of Mechanical Engineering and Birck Nanotechnology Center at Purdue University.  He received his B.S. and M.S. from the Department of Engineering Mechanics at Tsinghua University, in 2000 and 2002 respectively. He then received an M.S. in electrical engineering in 2006 and Ph.D. in mechanical engineering in 2007 from the University of Michigan at Ann Arbor, before joining Purdue. His research and teaching interests are in predictive simulations, scalable manufacturing, and multiscale characterizations of thermal transport materials and systems. He received the NSF CAREER Award, Air Force Summer Faculty Fellowship, ASME Heat Transfer Division Best Paper Award, the inaugural School of Mechanical Engineering Outstanding Graduate Student Mentor Award, and was named a University Faculty Scholar of Purdue University and an ASME Fellow, among his honors. He currently serves as an associate editor for ASME Journal of Heat Transfer.





Upcoming BNC Virtual Faculty Seminars, Fall 2020:

Date
Faculty
Title
9/10/20
Ali Shakouri, Director of Birck Nanotechnology Center
Overview of SMART Industry Consortium
9/17/20
Luna Lu, Professor of Civil Engineering -  *Note time change*  (10am - 11am): Co-Hosted with ECE
Nanotechnology for Energy Harvesting and Sensing Applications
9/24/20
Alex Ma, Assistant Professor of Physics and Astronomy
Superconducting circuits for quantum simulation and quantum information sciences
10/01/20
Hadiseh Alaeian, Assistant Professor of Electrical and Computer Engineering
atom-Nanophotonics at low dimensions
10/08/20
Jianguo Mei, Assistant Professor, Department of Chemistry
Semiconducting Polymers: A Journey from Scientific Curiosity to Technology Commercialization
10/15/20
Chen-Lung Hung, Assistant Professor of Physics and Astronomy
Engineering atom-nanophotonics hybrid lattices
10/22/20
Chi Hwan Lee, Assistant Professor of Biomedical Engineering and Mechanical Engineering
Sticker-Like Flexible Sensors for Wearable Healthcare Applications
10/29/20
Ryan Wagner, Research Assistant Professor, School of Mechanical Engineering
Atomic force microscopy as a tool for multiphysics nanoscale characterization
11/5/20
Arnab Banerjee, Assistant Professor of Physics and Astronomy
Co-design towards exotic spin-based systems and devices
11/12/20
Krishna Jayant, Professor of BME - *Note time change*  (10am - 11am): Co-Hosted with ECE
11/19/20
Xiulin Ruan, Professor, School of Mechanical Engineering
First Principles and Machine Leaning Predictions of Thermal and Optical Properties, and the Developments of Radiative Cooling Paints

Spring 2021 Schedule:


Date

Faculty

Title

2/4/21
Yi Xie, Assistant Professor, School of Nuclear Engineering
Degradation of Structural Materials and Fuels in Nuclear Systems

2/11/21
Letian Dou, Assistant Professor, Davidson School of Chemical Engineering
Organic-Perovskite Hybrid Quantum Wells, Heterostructure, and Optoelectronics

2/18/21
Nikhilesh Chawla, Ransburg Professor, School of Materials Engineering

2/25/21
Sorin Adam Matei, Associate Dean of Research and Graduate Education, College of Liberal Arts, Professor of Communication, Brian Lamb School of Communication
Team Science - what it is, how it works, and why it does not always work the way we want it to work

3/4/21
David Cappelleri, Associate Professor of Mechanical Engineering
Microrobotics Research Highlights

3/11/21
Stylianos Chatzidakis, Assistant Professor, School of Nuclear Engineering

3/18/21

Reading Day

3/25/21
Tyler Tallman, Assistant Professor, School of Aeronautics and Astronautics

4/1/21

4/8/21

4/15/21

4/22/21

4/29/21

Dead Week

5/6/21

Finals Week

Thanks!

Jaime Turner
Lead Administrative Assistant to the Director | Birck Nanotechnology Center
BRK | 1205 W State Street | West Lafayette, IN 47907
o: 765-494-3509<tel:7654943509> | m: 765-491-3064<tel:7654913064> | jjturner at purdue.edu<mailto:jjturner at purdue.edu>

[83324AA6]<https://www.purdue.edu/>


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