July 2015 - Che-courtesy-list

Sad News
by Varma, Arvind 14 Jun '16

14 Jun '16

Dear Colleagues, I am very sorry to inform that Julie Kim's mother passed away recently after a lengthy illness. Sang will leave for her memorial services in California early tomorrow morning. Our thoughts and prayers are with Julie, Sang and their family. Arvind

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Nicole Devlin Dissertation Defense, Monday, August 3rd, at 1:00 p.m. in FRNY 3062B
by Green, Corwin S 28 Jul '15

28 Jul '15

This e-mail is to announce that Nicole Devlin will be defending her dissertation, The Separation of Two Different Sized Particles Via Droplet Evaporation, on Monday, August 3rd, at 1:00 p.m. in FRNY 3062B. The dissertation is directed by Dr. Harris, and the abstract is below. All are welcome to attend. Abstract: An evaporating droplet with different sized particles was examined both computationally and experimentally. During evaporation, particles can naturally separate into concentric rings by size with one ring per particle size. The objective of this investigation was to determine factors that contribute to this separation process. Computationally, the finite element method was used to solve a transport model for the droplet fluid velocity in two directions (radial and axial), the pressure, the temperature inside the droplet, and the concentration of each particle size. Experimentally, an aqueous droplet with 1 µm and 3 µm polystyrene spheres was evaporated on a silicon substrate. It was determined that several factors contribute to particle separation. First, the surface tension driven Marangoni currents caused by evaporative cooling on the droplet surface significantly affect the separation process. The Marangoni currents keep the particles suspended in the droplet for the majority of the evaporation, which allows for separation by geometric constraints. A maximum packing concentration for the spheres was implemented in the simulations and without Marangoni currents, the maximum packing limit is reached quickly, before separation can occur. Second, gravity was determined to have a large effect on particle deposition. Pendant droplet simulations and experiments result in larger (3 µm) particles depositing in the center of the droplet and the smaller (1 µm) particles depositing on the edge of the droplet. The third investigation was a computational study on the influence of buoyancy-driven flow in an evaporation. It was determined that buoyancy-driven flow is present in the initial stages of droplet evaporation, especially when the environment is humid. And finally, an experimental investigation on the surface roughness and droplet contact line depinning on particle separation was conducted. Both high surface roughness and contact line depinning prevent the separation of particles in an evaporating droplet. Corwin Green Graduate Office Secretary School of Chemical Engineering Purdue University 480 Stadium Mall Drive West Lafayette, IN 47907 E-mail: csgreen(a)purdue.edu<mailto:csgreen@purdue.edu> www.engineering.purdue.edu/ChE<https://engineering.purdue.edu/ChE/index.html>

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Dissertation Defense Announcement
by Green, Corwin S 17 Jul '15

17 Jul '15

This e-mail is to announce that Lizbeth Rostro will be defending her dissertation, Synthesis and Characterization of Radical Polymers in Organic Electronic Applications, on Friday, July 24th, at 3:00 p.m. in FRNY G124. The dissertation is directed by Dr. Boudouris, and the abstract is attached. All are welcome to attend. Corwin Green Graduate Office Secretary School of Chemical Engineering Purdue University 480 Stadium Mall Drive West Lafayette, IN 47907 E-mail: csgreen(a)purdue.edu<mailto:csgreen@purdue.edu> www.engineering.purdue.edu/ChE<https://engineering.purdue.edu/ChE/index.html>

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Dissertation Defense Announcement
by Green, Corwin S 15 Jul '15

15 Jul '15

This e-mail is to announce that Charles J. Hages will be defending his dissertation, Development and Characterization of Nanoparticle-based Kesterite Solar Cells, on Wednesday, July 22nd, at 2:00 p.m. in FRNY 3062B. The dissertation is directed by Dr. Agrawal, and the abstract is attached. All are welcome to attend. Corwin Green Graduate Office Secretary School of Chemical Engineering Purdue University 480 Stadium Mall Drive West Lafayette, IN 47907 E-mail: csgreen(a)purdue.edu<mailto:csgreen@purdue.edu> www.engineering.purdue.edu/ChE<https://engineering.purdue.edu/ChE/index.html> Corwin Green Graduate Office Secretary School of Chemical Engineering Purdue University 480 Stadium Mall Drive West Lafayette, IN 47907 E-mail: csgreen(a)purdue.edu<mailto:csgreen@purdue.edu> www.engineering.purdue.edu/ChE<https://engineering.purdue.edu/ChE/index.html>

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Dissertation Defense Announcement
by Green, Corwin S 15 Jul '15

15 Jul '15

This e-mail is to announce that Myles Thomas will be defending his dissertation, Enhanced Centrifuge-Based Approach to Powder Characterization, on Tuesday, July 21st, at 9:00 a.m. in FRNY 3062B. The dissertation is directed by Dr. Beaudoin, and the abstract is attached. All are welcome to attend. Corwin Green Graduate Office Secretary School of Chemical Engineering Purdue University 480 Stadium Mall Drive West Lafayette, IN 47907 E-mail: csgreen(a)purdue.edu<mailto:csgreen@purdue.edu> www.engineering.purdue.edu/ChE<https://engineering.purdue.edu/ChE/index.html>

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Dissertation Defense Announcement
by Green, Corwin S 13 Jul '15

13 Jul '15

This e-mail is to announce that Erik J. Sheets will be defending his dissertation, The Solution-Based Synthesis of Semiconducting Phosphide Nanocrystals for Alternative Energy Applications, on Friday, July 17th, at 3:00 p.m. in FRNY 3062B. The dissertation is directed by Dr. Agrawal, and the abstract is attached. All are welcome to attend. Corwin Green Graduate Office Secretary School of Chemical Engineering Purdue University 480 Stadium Mall Drive West Lafayette, IN 47907 E-mail: csgreen(a)purdue.edu<mailto:csgreen@purdue.edu> www.engineering.purdue.edu/ChE<https://engineering.purdue.edu/ChE/index.html>

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Dissertation Defense Announcement
by Green, Corwin S 10 Jul '15

10 Jul '15

This e-mail is to announce that Renay Sheng-Chuan Su will be defending her dissertation, Engineering Elastomeric Protein-based Biomaterials for Tissue Engineering and Drug Delivery Applications, on Wednesday, July 15th, at 10:00 a.m. in FRNY 3062B. The dissertation is directed by Dr. Liu, and the abstract is attached. All are welcome to attend. Corwin Green Graduate Office Secretary School of Chemical Engineering Purdue University 480 Stadium Mall Drive West Lafayette, IN 47907 E-mail: csgreen(a)purdue.edu<mailto:csgreen@purdue.edu> www.engineering.purdue.edu/ChE<https://engineering.purdue.edu/ChE/index.html>

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Jennifer Sinclair Curtis (BSChE '83)
by Varma, Arvind 10 Jul '15

10 Jul '15

Dear All, You may already be aware of the news below re Jennifer Curtis: http://engineering.ucdavis.edu/blog/jennifer-sinclair-curtis-named-dean-of-… Arvind

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Dissertation Defense Announcement
by Green, Corwin S 08 Jul '15

08 Jul '15

This e-mail is to announce that M. Jane Brennan will be defending her dissertation, Design and Characterization of Biomimetic Adhesive Materials, on Wednesday, July 15th, at 1:30 p.m. in FRNY 3062B. The dissertation is directed by Dr. Liu, and the abstract is attached. All are welcome to attend. Corwin Green Graduate Office Secretary School of Chemical Engineering Purdue University 480 Stadium Mall Drive West Lafayette, IN 47907 E-mail: csgreen(a)purdue.edu<mailto:csgreen@purdue.edu> www.engineering.purdue.edu/ChE<https://engineering.purdue.edu/ChE/index.html>

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Results of safety inspections - July 2015
by Nagy, Gabriela 02 Jul '15

02 Jul '15

Hello Everyone, In preparation for the upcoming Safety Recertification of our School with REM, the ChE Safety Committee inspected last week all laboratories and offices in FRNY and the rooms occupied by ChE personnel in POTR. I am glad to report that we noticed an overall improvement in the safety of our labs. Please find attached a document that summarizes the he most frequent safety issues identified during the safety inspections. The document also spells out the OSHA and Purdue required documentation, PPE requirements and a reminder of some safety rules and policies applicable to our School. Please pay close attention to the safety gloves policy under the PPE section. Each faculty or person responsible for a specific area will shortly receive another email with the results of the safety inspection for that area, please address the problems identified. The Safety Committee will perform unannounced inspections at the beginning of August to check whether the safety issues identified were addressed. Thank you all for your continuous commitment to safety! Best regards, Gabriela Nagy on behalf of the ChE Safety Committee __________________ Gabriela Nagy, PhD Industrial Education Director ChE Safety Committee Chair School of Chemical Engineering Room FRNY G051 Purdue University Tel: (765)-496-1710 E-mail: nagyg(a)purdue.edu<mailto:nagyg@purdue.edu>

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