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Seminar reminder for Zhimin Qi, Friday, Oct. 20, at 9:00 a.m., in HAMP 2107; "Current Cathode Materials and Their Limitations in Lithium Ion Batteries"
by Son, Rosemary E 19 Oct '17

19 Oct '17

Please consider attending the following tomorrow, Friday, Oct. 20, at 9:00 a.m., in HAMP 2107: MATERIALS ENGINEERING SEMINAR "Current Cathode Materials and Their Limitations in Lithium Ion Batteries" By Zhimin Qi Purdue MSE Ph.D. Preliminary Exam Advisor: Professor Haiyan Wang ABSTRACT Lithium ion batteries is one of the most intriguing and promising energy storage in the modern society, and it has been extensively explored since 1990s. A lithium ion battery contains three main component, cathode, anode, and electrolyte, and the performance of battery depends on each component and the compatibility between them. In this review, a general introduction of anode and electrolyte is given, and a detailed discussion in main types of cathode materials and their limitations is made. Electrolyte act as a conduction medium of lithium ions and the incompatibility with electrodes would directly cause decomposition of electrolyte. Anode usually has much higher capacity and very low voltage (vs Li+/Li0), which makes cathode the limiting factor in the battery. There are three main types of cathode materials in terms of lithium transportation dimension. 1-D olivine structure (LiFePO4) has a very stable structure and electrochemical performance, but it suffers both conductivity. Electrically conductive coating layer and size reduction methods were introduced to solve the problem. 2-D layered structure (LiCoO2) has a high theoretical capacity, moderate conductivity but structural instability when x in LixCoO2 is smaller than 0.5 and under elevated temperature. Partial substitution of Co ion leads to (Li(NiyMnzCo1-y-z)O2 (NMC)) and improves the thermal stability and reversible capacity. Further, the incorporation of Li2MnO3 gave rise to Li-rich composite material and improvement of the capacity and operation voltage. 3-D spinel structure LiMn2O4 is usually applied as high power cathode material but suffers from Mn3+ dissolution and phase transformation upon cycling. Preventive coating and dopant ion were introduced to relieve the problem. Fundamental limiting factors in cathode materials were also discussed. Different crystal structures, chemical bonding environment, and compatibility with electrolyte should all be considered when it comes to design a cathode material for lithium ion battery system. Cathode material has the intrinsic upper voltage limit due to fermi level pinning at the top of anion p band. Cathode solid electrolyte interphase is critical regarding the electrochemical performance of the material. Despite the complicate formation mechanism and developing process during cycling, surface protective layer was usually applied to solve the issue. Date: Friday, October 20, 2017 Time: 9:00 A.M. Place: HAMP 2107

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MSE 690 Seminar Speaker Professor Adam Nolte, Monday, October 23, 2017 ARMS 1010 3:30 pm
by Coar, Stacey L 19 Oct '17

19 Oct '17

[cid:image001.png@01D348B7.B7606800] Stacey Stacey Coar Secretary/Development Assistant School of Materials Engineering Purdue University Neil Armstrong Hall of Engineering 701 West Stadium Ave. Room 2300 West Lafayette, IN 47907 765-494-4100 scoar(a)purdue.edu<mailto:scoar@purdue.edu>

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Fwd: Research Seminar October 24 -Prof. Vilas G. Pol
by Donna Bystrom 16 Oct '17

16 Oct '17

*EEE Research Seminar* *DATE: Tuesday, October 24* *TIME: 10:30 A.M.* *LOCATION: Fu Room POTR 234* ** *Vilas G. Pol* /Associate Professor of Chemical Engineering,/ *Purdue University,//**West Lafayette, IN 47907, USA* *https://engineering.purdue.edu/ViPER/index.html* *“Upcycling of Waste Plastic into Valuable Energy Storing Carbons”* ** Patti Finney Administrative Assistant Graduate Program Purdue University Environmental and Ecological Engineering pfinney(a)purdue.edu <mailto:pfinney@purdue.edu> Potter Engineering Center, Room 364D Phone: 765/496-0545 Fax: 765/494-4482

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Fwd: FW: International Travel Ban
by Donna Bystrom 16 Oct '17

16 Oct '17

Everyone: We are passing on the following proclamation regarding the country's new travel ban. This information was sent to us from the International Scholar Services office. Please read, carefully, the attached message before you make plans to travel out of the country. Donna “New” Travel Ban The administration issued a Proclamation on September 24, 2017, amending the existing Travel Ban. The September 24 Proclamation essentially revives Section 2(c) (relating to visa applications by certain foreign nationals) effective October 18, 2017, and alters the affected countries. The new "list of 8" countries comprises Chad, Iran, Libya, North Korea, Somalia, Syria, Venezuela and Yemen. The specific nature of the Travel Ban depends on the country in question. Suspension of entry will not apply to individuals who (1) Hold greencards, (2) Have been admitted to or paroled into the U.S. on or after October 18, 2017, (3) Have been issued a travel document other than a visa (such as an advance parole document) which is valid on or after October 18, 2017, and others. The Proclamation provides that waivers may be granted on a case-by-case basis and lists specific examples of situations where a waiver might be available, including circumstances where the individual has a prior history of work or study in the U.S. or where the prospective entry is for "professional or business obligations" (which arguably could include new employment in the US). For more information, please see our detailed explanation of the Travel Ban on the IntlScholars Sharepoint <https://sp2013.itap.purdue.edu/ippu/iss/intlscholars/ImmiWiki/Travel%20Ban.…> site. What Does the “New” Travel Ban Mean? *_Travel: _*ISS continues to strongly recommend that our international faculty, staff and scholars do not engage in any unnecessary travel. ·We strongly recommend that individuals who hold passport from the countries listed above use extreme caution before engaging in any travel, regardless of whether they already hold a visa. ·Possession of an unexpired visa does not guarantee admission. Customs and Border Protection (CBP) Officers "inspect" foreign nationals at land / sea ports-of-entry and at airports to evaluate whether admission may be granted. We are seeing a slightly higher rate of denial of admission by the CBP in general. CBP is permitted to revoke the visa of an individual who is denied admission. For example, this is happening (but is not limited to) to individuals who have visited one of the listed countries in the past. ·Visa Applications in general are taking longer, and there is a much higher rate of Administrative Processing. There is nothing by law that ISS or Purdue can do to impact the duration of Administrative Processing. *_Pending Permanent Residents_*: Individuals who have a Form I-140 approved are not yet permanent residents, and thus are subject to the Travel Ban in terms of visa issuance. At this time, it does not appear that pending or new adjustment of status applications will be affected by the Travel Ban. *_No Time Limit_*: The ban, as envisioned by the Proclamation, does not have a time-limit – in other words, it does not have a pre-set end date. The ban for any given country continues until it is lifted. The DHS will evaluate the ban 180 days from implementation and every 180 days thereafter. *_No "Bona Fide Relationship":_* The Proclamation eliminates the Supreme Court's "bona fide relationship" standard. The Proclamation does specify F, J and M visas in its provisions, but work visas (such as but not limited to H-1B) are not listed in the Proclamation as a consideration. A current, pre-existing or prospective work relationship is a possible basis for a waiver, but should not be considered a guarantee of waiver issuance. *_Please distribute this summary to your departments and international faculty, staff and scholars._* Best regards, International Scholar Services

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Civil Engineering Bake Sale Supporting United Way
by Coar, Stacey L 13 Oct '17

13 Oct '17

[cid:image005.png@01D3440D.A942B060] Hungry? Be sure to stop by the Civil Engineering Main Office to get your treat! We're holding a bake sale today while supplies last! All proceeds will support the Purdue United Way Campaign. You can find us in Hampton Hall, Rm. 1141. Share with your groups and we hope to see you soon! Kathy Kathy M. Heath Program Administration Manager Lyles School of Civil Engineering Delon and Elizabeth Hampton Hall of Civil Engineering Purdue University * 550 Stadium Mall Drive West Lafayette, IN 47907-2051 Office (765) 494-2157 * Fax (765) 494-0395 * heathk(a)purdue.edu<mailto:heathk@purdue.edu> [cid:image001.png@01D0BD84.B3BFAB40]<https://engineering.purdue.edu/CE>[facebook-icon]<https://www.facebook.com/PurdueCE>[twitter-icon]<https://twitter.com/PurdueCE>[twitter-icon]<https://www.youtube.com/channel/UCUItx8DqEeysf9QTdFDvvfg/feed> For Career Placement Activities or to post a position, visit our Industry Opportunities Site<https://engineering.purdue.edu/CE/Careers/IndustryOpps>!

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Fwd: EEE Research Seminar - Dr. Rob Nerenberg
by Donna Bystrom 06 Oct '17

06 Oct '17

*EEE Research Seminar* *DATE: Tuesday, October 17* *TIME: 10:30 A.M.* *LOCATION: Fu Room POTR 234* ** *Dr. Rob Nerenberg, Associate Professor, Department of Civil & * *Environmental Engineering & Earth Sciences* *University of Notre Dame* ** *“Unique Behavior of Counter-Diffusional Biofilms in Membrane-Aerated Biofilm Reactors”* Patti Finney Administrative Assistant Graduate Program Purdue University Environmental and Ecological Engineering pfinney(a)purdue.edu <mailto:pfinney@purdue.edu> Potter Engineering Center, Room 364D Phone: 765/496-0545 Fax: 765/494-4482

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Yifan Zhang's Preliminary Seminar and Exam scheduled for Thursday, Oct 5, has been postponed due to scheduling. Please look for his topic at a later date.
by Son, Rosemary E 04 Oct '17

04 Oct '17

School of Materials Engineering Purdue University Neil Armstrong Hall of Engineering 701 West Stadium Ave. Room 2200 West Lafayette, IN 47907 765-494-4105

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FW: Event for PhDs and postdocs: "Engineers in Industry"
by Son, Rosemary E 04 Oct '17

04 Oct '17

From: Inamdar, Amruta A Sent: Wednesday, October 04, 2017 12:25 PM Subject: Event for PhDs and postdocs: "Engineers in Industry" Hello: The CCO is organizing a presentation by Beverly Mentzer on how PhD students and postdocs can plan for a career in industry. Beverly retired as Vice President, ExxonMobil. She worked 33 years in both domestic & international engineering and managerial positions, and led engineers, geoscientists and onsite operations staff in US onshore and offshore oil & gas operations. She will discuss the skills needed by PhDs and postdocs if they want to succeed in industry, how best to utilize their technical skills, and which behaviors might inhibit their paths to advancement. The presentation will be followed by a Q&A session. Please consider posting the flyer in your office spaces, and encouraging your PhD students and postdocs to attend this event! Individuals in the Departments of Chemical, Materials, and Mechanical Engineering and Chemistry and those interested in working in the oil and gas industry will find this talk particularly helpful. Please direct questions about the event to me. Thank you! Amruta Amruta Inamdar, Ph.D. Career Services Consultant - Graduate Students Purdue University Center for Career Opportunities; YONG 245 amruta(a)purdue.edu<mailto:amruta@purdue.edu>; 765-494-1409 My Office is a Safe Space

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Reminder for Yifan Zhang's Preliminary Exam, Thursday, Oct. 5, in ARMS 1021, at 9:30 a.m. "Deformation Twinning in Nanocrystalline Al"
by Son, Rosemary E 04 Oct '17

04 Oct '17

Reminder for the following: MATERIALS ENGINEERING SEMINAR "Deformation Twinning in Nanocrystalline Al" By Yifan Zhang Purdue MSE Ph.D. Preliminary Exam Advisor: Professor Xinghang Zhang ABSTRACT Deformation twinning is one of the primary deformation mechanisms in numerous metallic materials to accommodate shear strain and plastic deformation. In general, even under extreme deformation conditions, coarse-grained monolithic Al rarely deforms via deformation twinning because of its high stacking fault energy (104-142 mJ/m2). One practical pathway to facilitate deformation twinning is via grain refinement. Experimental studies and molecular dynamic simulations show several unique deformation twinning mechanisms in nanocrystalline (nc) Al with an average grain size of 100 nm or less. Furthermore, physical models have also been established to describe the nucleation and growth process of deformation twins. Date: Thursday, October 5, 2017 Time: 9:30 A.M. Place: ARMS 1021

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Seminar Notice for Megan Forshey's Preliminary Exam, Tuesday, October 3, at 1:30 p.m., in ARMS 1109. "Real-Time Spectral Birefringence Technique to Determine Polymer Morphology
by Son, Rosemary E 02 Oct '17

02 Oct '17

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Real-time Spectral Birefringence Technique to Determine Polymer Morphology" By Megan Froshey Purdue MSE Ph.D. Preliminary Exam Advisor: Professor Mukerrem Cakmak ABSTRACT It is difficult to predict complicated viscoelastic polymer responses when subjected to mechanical deformation. One way to measure microstructural changes during these processes is to pass white light through the sample and measure its retardation over time. The difference in chain orientation in axial directions affects how light interacts with the polymer sample, and converting this retardation to birefringence provides a way to quantify changes in polymer chain orientation. Historically, systems used to measure birefringence of polymers were very simple and led to various errors, such as human interpretation of results. Furthermore, they were not able to provide precise, quantitative results and never before were able to track polymer properties in real time. This presentation discusses the development of real-time spectral birefringence technique to quantify microstructure of polymers- a novel way to quickly and accurately measure changes in polymer structure while undergoing complicated processing steps, simulating those in industry. This technique can be applied to any situation in which polymers are subjected to thermal or mechanical stresses - such as film orientation, annealing, and drying - and has the goal of providing constitutive relationships between mechanical and optical properties of polymers to allow for prediction and control of polymer morphology. Important applications include biaxial film orientation, used in capacitors and food packaging, as well as novel technologies such as photovoltaics and wearable health sensors. Date: Tuesday, October 3, 2017 Time: 1:30 P.M. Place: ARMS 1109

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