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Posted by: mus41 on Jan 28, 2016
Professor Melik Demirel of the Department of Engineering Science and Mechanics will present a session: A Revolution in Nonwoven Fabrics: Self-healing Biopolymers at RISE 2016 in New Orleans this week. For more information, see the event website here.
Posted by: mus41 on Jan 27, 2016
Check out the Penn State News feature on 3-D acoustic tweezers research by Tony Huang, professor of engineering science and mechanics, and a team of Penn State engineers. The full story can be found here.
Posted by: mus41 on Jan 27, 2016
Satish Bukkapatnam
Department of Industrial and Systems Engineering
Texas A&M University

Wednesday, February 10, 2016 3:35pm - 4:25pm
114 EES Building

Smart manufacturing: Incipient change detection and quality assurance
With recent advances in communication, computation and miniaturization technologies, the idea of
“smart manufacturing,” that integrates sensors, data analytics and automation as part of manufacturing
processes and systems, has evinced significant interest. Smart manufacturing has been touted to
provide dramatic reductions in quality loss and energy consumption. Fundamentally, it can offer a new
approach to characterize and monitor next generation of manufacturing technologies based on
combining physical science and data science principles. This talk presents an overview of the
manufacturing thrusts at Texas A&M University, and describes a “smart manufacturing” approach that
combines nonlinear dynamic systems principles with nonparametric predictive modeling for surface
quality assurance in precision manufacturing processes. Extensive experiments and testing suggest that
the new approach can detect subtle changes in vibration signals capturing micro/nano-scale scratch
initiation in ultraprecision machining and chemical-mechanical polishing processes some 50 ms ahead of
other competing methods.

Bio: Satish Bukkapatnam received his Ph.D. degree in industrial and manufacturing
engineering from Penn State in 1997. He currently serves as Rockwell International
Professor with Department of Industrial and Systems Engineering and director of TEES
Institute for Manufacturing Systems at Texas A&M University with joint appointments
with Biomedical and Mechanical Engineering departments. His research addresses the
harnessing of high-resolution nonlinear dynamic information, especially from wireless
MEMS sensors to improve the monitoring and prognostics of precision manufacturing
processes and machines, and cardiorespiratory processes. His research has led to 133 peer-reviewed
publications, five pending patents, $5 million in grants as PI/Co-PI, and 10 best-paper/poster recognitions.
He also received Oklahoma State University regents distinguished research, Halliburton outstanding
engineering faculty, the Institute of Industrial Engineers Eldin outstanding young industrial engineer and
the Society of Manufacturing Engineers Dougherty outstanding young manufacturing engineer awards.
Posted by: mus41 on Jan 22, 2016
Huanyu Cheng, assistant professor of Engineering Science and Mechanics, was a contributing author to the recently published article “Bioresorbable silicon electronic sensors for the brain” on The article will be published in the February 4, 2016, print issue of Nature, but you may read it online here.
Posted by: mus41 on Jan 21, 2016
Charles Bakis, Distinguished Professor of Engineering Science and Mechanics, recently presented an invited keynote lecture at the 12th International Symposium on Fiber Reinforced Polymers for Reinforced Concrete Structures (FRPRCS-12) & 5th Asia-Pacific Conference on Fiber Reinforced Polymers in Structures (APFIS-2015) Joint Conference, 14-16 December 2015, Nanjing, China. The title of his lecture was "Epoxy and
its Role in the Long-Term Performance of Bonded FRP Material Systems".
Category: ESM News
Posted by: mus41 on Jan 20, 2016
Penn State ESM professor Tony Huang will give a lecture on "Invented: A Better Tool Against Cancer" as part of the 2016 Penn State Lectures on the Frontiers of Science series. Attend this free public minicourse: Feb. 20., 11:00 a.m.-12:30 p.m., 100 Thomas Building, University Park campus.
Posted by: mus41 on Jan 20, 2016
Congratulations to Dr. Charles Bakis, Distinguished Professor of Engineering Science and Mechanics on being elected a Fellow of the American Concrete Institute.

Posted by: mus41 on Jan 20, 2016
Nicholas C. Strandwitz
Department of Materials Science and Engineering
Lehigh University

Wednesday, February 3, 2016 3:35pm - 4:25pm
114 EES Building

Interfaces between semiconductors and metal oxides are important for a wide array of
applications including surface passivation layers on solar cells and gate dielectrics. Recently, atomic
layer deposition (ALD) has emerged as a unique tool for the formation and study of oxides on
semiconductors. ALD enables conformal deposition of a wide variety of compositions with precise
thickness control through a binary chemical reaction sequence. In this talk, I will address two outstanding
questions regarding ALD oxide-semiconductor interfaces: The origin of fixed negative charge and the
presence of fixed charges in tunnel-active (thickness < 2 nm) alumina films.
Fixed negative charges are often found at alumina-silicon interfaces as evidenced by results from
ex situ analysis techniques. We utilize the temporally-separated chemical events that result in ALD
growth to study the evolution of fixed charge in situ during deposition. Here, the conductance across a
silicon channel region was measured during ALD of aluminum oxide which yielded information about
the effects of ALD chemistry on the charge carrier concentrations in the channel. In particular, we
observed evidence for the formation of a small fixed negative charge (~5×1010 cm-2) upon the first
chemisorption of trimethylaluminum on the Si/SiO2 surface. These measurements provide a unique ability
to monitor charge formation during deposition, and the possibility to engineer interfaces with controlled
amounts of positive or negative charge.
The above results, and prior reports in the literature, indicate that even very thin, sub-nanometer,
layers can harbor a fixed negative charge. Such negative charge can, in theory, significantly impact
barrier heights at metal-insulator-semiconductor tunneling contacts, but is not currently known if such
charge will remain after contact metallization. We have varied the fixed charge in thin alumina layers
using processing conditions in effort to understand the fate of fixed charge. We also will present
analytical and device physics simulations to compare with our experiments.

Dr. Strandwitz joined the Lehigh University faculty in January 2013. Dr. Strandwitz completed his BS in
Engineering Science at The Pennsylvania State University in 2004 during which time he worked with
Prof. Joseph Rose and Prof. Stephen Fonash. He then earned his PhD from the Materials Department at
University of California Santa Barbara with Professor Galen D. Stucky. Most recently, Professor
Strandwitz conducted postdoctoral work at California Institute of Technology working with Professor
Nathan S. Lewis. His research interests include new chemistries and techniques in atomic layer
deposition and interfacial electronic properties between semiconductors and metal oxides.
Posted by: mus41 on Jan 19, 2016
Congrats to ESM professors Akhlesh Lakhtakia and Tony Huang on being named IEEE Fellows. See the full story here.
Posted by: mus41 on Jan 15, 2016
Congrats to ESM grad students Nick LaBarbera, Abdon Pena Francesch, and Huihun Jung for their teams being selected for Happy Valley LaunchBox’s inaugural class of business startups! See the full story here.
Posted by: mus41 on Jan 13, 2016
Saptarshi Das
Department of Engineering Science and Mechanics, PSU

Wednesday, January 27, 2016 3:35pm - 4:25pm
114 EES Building

Abstract. The interest in two dimensional (2D) materials is rapidly spreading across all scientific
and engineering disciplines due to their exceptional properties, which not only provide a
platform to investigate intriguing physical phenomena but also promise solutions to the most
relevant technological challenges. It is undisputed that silicon has been the DNA of our
technological evolution for the last several decades. However, with the emergence of the era of
Internet of Things (IoT), novel materials need to be mutated into the genetics of the modern
technologies in order to meet the ever increasing demand of new functionalities. In this context,
the 2D materials find their immediate application in flexible electronics, self-powered
electronics, advance optoelectronics as well as digital electronics. In fact, field effect transistors,
gas sensors, bio-detectors, mechanical resonators, optical modulators and energy harvesting
devices with superior performances have already been demonstrated based on 2D materials. A
major challenge towards the commercialization of 2D materials is the large area, scalable and
controllable growth of highly crystalline monolayers in a cost effective way. In this context,
chemical vapor deposition, liquid phase exfoliation and electrochemical synthesis approaches are
showing a lot of promise. My talk will provide a holistic understanding of 2D materials starting
from large area synthesis to device fabrication to different electronic and optoelectronic

Bio. I completed BE degree (2007) from Jadavpur University, India and PhD degree (2013) from
Purdue University, USA. I worked at Argonne National Lab as a postdoctoral research scholar
from 2013-15 and as an assistant research scientist from 2015-16. Currently, I am an Assistant
Professor of Engineering Science and Mechanics at Pennsylvania State University. My research
primarily focuses on the experimental investigation of novel materials (especially 2D materials
like MoS2, Black Phosphorus, Graphene and 1D materials like CNT and Nanowires) for
innovative device ideas. I work on low-power electronics, flexible electronics, optoelectronics
and energy-harvesting applications.
Posted by: mus41 on Jan 6, 2016
Akhlesh Lakhtakia
Department of Engineering Science and Mechanics, PSu

Wednesday, January 20, 2016 3:35pm - 4:25pm
114 EES Building