January 2018 - Msepostdoc-list

Advances in Circular Economy
by Donna Bystrom 29 Jan '18

29 Jan '18

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Seminar Reminder for Andrew Schlup's Preliminary Exam Seminar: Tuesday, Jan. 30, at 1:30 p.m., in ARMS 1021; Exam: Tuesday, Jan. 30, at 3:00 p.m., in ARMS 2237. " Alignment of Platelet-Grain Ceramic Particles in Shear and Elongational Fluid Flows"
by Son, Rosemary E 29 Jan '18

29 Jan '18

Reminder to attend the following: MATERIALS ENGINEERING SEMINAR "Alignment of Platelet-Grain Ceramic Particles in Shear and Elongational Fluid Flows" By Andrew Schlup Purdue MSE Ph.D. Preliminary Exam Advisors: Professor Rodney W. Trice and Professor Jeffrey P. Youngblood ABSTRACT Particle alignment in ceramics is a desirable microstructure feature due to the ability to control the properties of the sintered ceramic part, including mechanical, electrical, and even optical properties. These material property improvements originate from anisotropy that is a result of particle alignment. There are several ways to achieve particle alignment in a polycrystalline ceramic, with the most common method being the utilization of shear and elongational fluid flows. When high aspect-ratio ceramic particles (rods or platelets) are suspended in a fluid and that suspension is subjected to shear or elongational flows, the ceramic particles will preferentially orient due to the velocity profile gradient of the suspension. Thus, understanding the velocity profiles are critical for understanding how particle alignment occurs and how to control it. The velocity profiles of both shear and elongational flow will be discussed, along with their respective equations. Additionally, the orientation dynamics of particles in shear and elongational flow will be explored, as well as the governing equations that describe the rotation and subsequent orientation of high aspect-ratio particles in the different types of fluid flows. Finally, different processing methods found in the literature for achieving shear and elongational flow of ceramic-platelet/fluid suspensions will be discussed. These methods include tape-casting, co-extrusion, and biaxial extensional flow. The ways in which these methods are performed are crucial to understanding how the shear and/or elongational flow is manifested in the fluid, how the flow can be controlled, and the effectiveness of the method to align ceramic platelets. Date: Tuesday, January 30, 2018 Time: 1:30 P.M. Place: ARMS 1021

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Seminar Reminder for Mohammed N. Issahaq's Preliminary Exam Seminar: Tuesday, Jan. 30, at 8:30 a.m., in ARMS 1021; Exam: Tuesday, Jan. 30, at 10:00 a.m., in ARMS 2326. " The Mechanisms of Solute Effects on the Electrical Resistivity of Metal Alloys"
by Son, Rosemary E 29 Jan '18

29 Jan '18

Reminder to attend the following: MATERIALS ENGINEERING SEMINAR "The Mechanisms of Solute Effects on the Electrical Resistivity of Metal Alloys" By Mohammed Naziru Issahaq Purdue MSE Ph.D. Preliminary Exam Advisor: Professor Kevin P. Trumble ABSTRACT Metallic electrical conductors usually lose their conductivity during material strengthening. Typical strengthening mechanisms for these metal conductors are grain size reduction, plastic deformation and solid solution strengthening. Among these mechanisms, the effect of impurity elements, in and out of solid solution is by far, the most potent mechanism for degrading electrical conductivity. The solute effect on conductivity however, varies with different solute atoms in solid solution. To determine how the electrical resistivity varies with increasing concentration of different solute atoms in a solvent, many theoretical models have been developed and tested against experimental data. It is found that, the resistivity does not exactly scale with the amount of lattice distortion due to atomic size differences between the solvent and solute atoms, but the interplay of several other factors including the distribution of the solute atoms in solution and the valence difference between the solvent and solute atoms. The direction of this review therefore, is to recap on the mechanisms that were thought to be the controlling factors of the solute effects on resistivity and what has now been found to constitute the working theory for the prediction of the impact of solute elements on the electrical resistivity of metals. Date: Tuesday, January 30, 2018 Time: 8:30 A.M. Place: ARMS 1021

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MSE 690 Speaker Dr. Charles Sing, Friday, February 2, 2018/ARMS 1010 - 3:30
by Coar, Stacey L 29 Jan '18

29 Jan '18

Good morning, Attached is the seminar announcement and agenda for our MSE 690 speaker whom will be here Friday. Please check your times if you are scheduled and let me know if have any changes. Thank you in advance. [cid:image001.png@01D398F0.8BCBAB30] [cid:image004.jpg@01D398F1.BE3D1210] 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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Information on Poster Printing
by Coar, Stacey L 26 Jan '18

26 Jan '18

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Seminar Reminder for Md Nuruddin's Preliminary Exam Seminar: Friday, Jan. 26, at 10:30 a.m., in ARMS 1021; Exam: Monday, Jan. 29, at 10:00 a.m., in ARMS 2326. " Application of Cellulose Nanocrystals (CNCDs) Coating on Polymers--A Pathway for Enhancemen
by Son, Rosemary E 25 Jan '18

25 Jan '18

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Application of Cellulose Nanocrystals (CNCs) Coating on Polymers-A Pathway for Enhancement of Barrier Properties of Polymers" By Md Nuruddin Purdue MSE Ph.D. Preliminary Exam Advisors: Professor John Howarter and Professor Jeffrey Youngblood ABSTRACT Unlike metals and glass, polymers are permeable to gases and organic vapors to some extent. Polymer barrier properties influence the suitability of polymers for specific applications such as protective coatings, membrane separation processes, and packaging applications. For packaging applications, it is important for polymers to have good barrier properties to prevent the transportation of water, oxygen, carbon dioxide and organic vapor. In this study, a better understanding of the transportation mechanism of gases through polymers, and the factors affecting barrier properties were discussed. Cellulose nanocrystals (CNCs) are considered a potential nanomaterial for next-generation packaging products due to their biodegradability, non-petroleum based sources, high crystallinity, and mechanical properties. The objective was to utilize CNC coating (controlling the maximum alignment of CNCs) on polymers to enhance the gas barrier properties of polymers. Preliminary results showed that the alignment of CNCs coating enhanced the gas (O2, CO2 and water vapor) barrier property of the polymers. This suggests that aligned CNCs coatings on polymers have improved barrier properties over self-organized coatings for packaging applications. Date: Friday, January 26, 2018 Time: 10:30 A.M. Place: ARMS 1021

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Park AFM Scholarship accepting applicants
by Coar, Stacey L 24 Jan '18

24 Jan '18

Hello everyone, Thank you for taking our call re: a scholarship program we are offering to your graduate students and postdoctoral researchers. As my colleague Lucas mentioned, Park Systems produces microscopy equipment for nanoscale characterization and we want to help young nanoscience researchers with the Park Atomic Force Microscope (AFM) Scholarship. We welcome any graduate students and postdocs who present research with data acquired using a Park AFM to send in their abstracts to become a Park AFM Scholar. Becoming a Scholar has multiple benefits, including: 1. An award of up to $500 USD for presenting their research at an academic conference either on campus or hosted off-site by an academic research society or organization. 2. An official Park AFM Scholar certificate 3. An opportunity for their research to be featured in a future issue in NanoScientific, a quarterly nanotechnology magazine published by Park Systems If applicants are unsure where to find a Park AFM to conduct qualifying research for the scholarship, they can contact us for help finding the system nearest them. In some cases, it may even already be on campus! 2017 winners came from such institutions as Binghamton University, the Georgia Institute of Technology, Northwestern University, Stanford University, the University of Waterloo, and the University of Wisconsin-Madison. To date, they have all been featured in NanoScientific-back issues recognizing the awardees can be found here: www.parkafm.com/index.php/medias/resources/nanoscientific<http://secure-web.cisco.com/1F8-oJY-C_0wWoAAyBGP8SwkGC_hntuQ-nR81X--X6Q2whA…>. Attached are additional program details and a flyer you are interested in participating or know someone who may be. Please let me know if you have any questions and we look forward to receiving applications at www.parkafm.com/scholarship<http://secure-web.cisco.com/1PUBiWgH85RYYzWeIcQl52IYwo-L_O95dZOoyQUkoCSHyD-…>. Good luck and we hope to receive applications from you all soon! Regards, Gerald Gerald Pascual Marketing Programs Manager Park Systems, Inc. 3040 Olcott Street, Santa Clara, CA 95054 +1-408-986-1110 x235 www.parkafm.com<http://secure-web.cisco.com/1P_F9I10Dz-A0gelaMZawR-lvOSLaWWaEKU3_uL1sBY6cf5…> [cid:part2.280174A0.9C120DA9@parkafm.com] [cid:part3.5AD797F8.37DF664D@parkafm.com] <http://secure-web.cisco.com/1g4QWntel1HKp6H2c9JiGH8FVXN78ha8047s6rBlng7seX7…> [cid:part5.851EE0CE.F2AA0E91@parkafm.com] <https://www.linkedin.com/company-beta/3166815/> [cid:part7.4BAC7F5D.A0C8BEE8@parkafm.com] <https://www.facebook.com/Park-Systems-155131668386526/> [cid:part9.51A525B2.A88ACB8A@parkafm.com] <https://twitter.com/Park_Systems>

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Fwd: Can you share this upcoming lecture with others?
by Donna Bystrom 23 Jan '18

23 Jan '18

============================================================ Nina L. Robinson, PhD e-mail: nlrobins(a)purdue.edu <mailto:nlrobins@purdue.edu> phone: 765.496.7578 Administrative Director, Environmental and Ecological Engineering College of Engineering, Purdue University Potter Engineering Center, 500 Central Drive, West Lafayette, IN 47907 ============================================================

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Seminar notice for Andrew Schlup's Preliminary Exam Seminar: Tuesday, Jan. 30, at 1:30 p.m., in ARMS 1021; Exam: Tuesday, Jan. 30, at 3:00 p.m., in ARMS 2237. " Alignment of Platelet-Grain Ceramic Particles in Shear and Elongational Fluid Flows"
by Son, Rosemary E 23 Jan '18

23 Jan '18

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Alignment of Platelet-Grain Ceramic Particles in Shear and Elongational Fluid Flows" By Andrew Schlup Purdue MSE Ph.D. Preliminary Exam Advisors: Professor Rodney W. Trice and Professor Jeffrey P. Youngblood ABSTRACT Particle alignment in ceramics is a desirable microstructure feature due to the ability to control the properties of the sintered ceramic part, including mechanical, electrical, and even optical properties. These material property improvements originate from anisotropy that is a result of particle alignment. There are several ways to achieve particle alignment in a polycrystalline ceramic, with the most common method being the utilization of shear and elongational fluid flows. When high aspect-ratio ceramic particles (rods or platelets) are suspended in a fluid and that suspension is subjected to shear or elongational flows, the ceramic particles will preferentially orient due to the velocity profile gradient of the suspension. Thus, understanding the velocity profiles are critical for understanding how particle alignment occurs and how to control it. The velocity profiles of both shear and elongational flow will be discussed, along with their respective equations. Additionally, the orientation dynamics of particles in shear and elongational flow will be explored, as well as the governing equations that describe the rotation and subsequent orientation of high aspect-ratio particles in the different types of fluid flows. Finally, different processing methods found in the literature for achieving shear and elongational flow of ceramic-platelet/fluid suspensions will be discussed. These methods include tape-casting, co-extrusion, and biaxial extensional flow. The ways in which these methods are performed are crucial to understanding how the shear and/or elongational flow is manifested in the fluid, how the flow can be controlled, and the effectiveness of the method to align ceramic platelets. Date: Tuesday, January 30, 2018 Time: 1:30 P.M. Place: ARMS 1021

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Seminar Notice for Mohammed N. Issahaq's Preliminary Exam Seminar: Tuesday, Jan. 30, at 8:30 a.m., in ARMS 1021; Exam: Tuesday, Jan. 30, at 10:00 a.m., in ARMS 2326. " The Mechanisms of Solute Effects on the Electrical Resistivity of Metal Alloys"
by Son, Rosemary E 23 Jan '18

23 Jan '18

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "The Mechanisms of Solute Effects on the Electrical Resistivity of Metal Alloys" By Mohammed Naziru Issahaq Purdue MSE Ph.D. Preliminary Exam Advisor: Professor Kevin P. Trumble ABSTRACT Metallic electrical conductors usually lose their conductivity during material strengthening. Typical strengthening mechanisms for these metal conductors are grain size reduction, plastic deformation and solid solution strengthening. Among these mechanisms, the effect of impurity elements, in and out of solid solution is by far, the most potent mechanism for degrading electrical conductivity. The solute effect on conductivity however, varies with different solute atoms in solid solution. To determine how the electrical resistivity varies with increasing concentration of different solute atoms in a solvent, many theoretical models have been developed and tested against experimental data. It is found that, the resistivity does not exactly scale with the amount of lattice distortion due to atomic size differences between the solvent and solute atoms, but the interplay of several other factors including the distribution of the solute atoms in solution and the valence difference between the solvent and solute atoms. The direction of this review therefore, is to recap on the mechanisms that were thought to be the controlling factors of the solute effects on resistivity and what has now been found to constitute the working theory for the prediction of the impact of solute elements on the electrical resistivity of metals. Date: Tuesday, January 30, 2018 Time: 8:30 A.M. Place: ARMS 1021

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