- Bnc-grads-list - ecn.purdue.edu

Graduation Party
by Anthrop, Heather L 16 Apr '14

16 Apr '14

Birck will be having a graduation party to celebrate all of our Spring 2014 graduates. If you are a graduate please let me know by April 23rd. Thank you, Heather L Anthrop Purdue University Birck Nanotechnology Center 1205 West State Street West Lafayette, IN 47907 (765) 494-7053

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Visit to Northwestern University - Saturday, April 19th (RSVP by 4/16)
by NSAC 13 Apr '14

13 Apr '14

Dear BRK grad students, NSAC's Research Awareness Committee would like to invite you to a day trip to visit Northwestern University (Evanston, IL) on *Saturday April 19th, 2014*. Northwestern University is one of the country's leading private research universities, with an annual budget of $2 billion and sponsored research in excess of $500 million. Located on two lakeshore campuses - one in Chicago and one in Evanston, the first suburb north of Chicago - Northwestern enrolls about 17,000 students and has some 2,500 full-time faculty. It has a long history of leadership in interdisciplinary research programs and centers. More than 90 school-based centers and 26 University centers support interdisciplinary research that spans a wide spectrum of areas, including neuroscience, nanotechnology, biotechnology, and drug discovery. [ http://www.research.northwestern.edu/] The agenda for the day is as follows: 8am Leave Birck 9am Breakfast 11am - 1pm Northwestern University (Lab Tours I) 1pm Lunch 2am - 3:30pm Northwestern University (Lab Tours II) 4pm - ? Downtown Chicago (Dinner?) (agree on a departure time with your driver) If you are interested in going, please* reply to this email by April 16th*; availability is on a first-come, first-served basis (*limit 15 people*). We'll have 3-4 drivers; further information regarding transportation will be sent later. Email nsac(a)purdue.eduif you have any questions/comments. See you then! NSAC

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Y. Wang PhD Final April 10, 2014 Notice
by Anthrop, Heather L 09 Apr '14

09 Apr '14

Note: Seminar and Exam location in DLR 143A MATERIALS SCIENCE AND ENGINEERING SEMINAR MSE PhD Final Examination Branched Nanowire Arrays as Bulk-like Thermoelectric Materials by: Yuefeng Wang Advisor: Prof. T. Sands ABSTRACT Thermoelectric generators (TEG) and coolers (TEC) consist of a plurality of n-type and p-type semiconductor TE leg elements, which can be utilized to convert heat into electricity, or conversely, create temperature gradients. The efficiency of a TE device is directly related to the material’s dimensionless thermoelectric figure of merit, ZT = S2σT/κ, where S is the Seebeck coefficient, σ is the electrical conductivity, T is the absolute temperature, and κ is the thermal conductivity. Bulk-alloy bismuth telluride (Bi2Te3) as the most widely used TE material has a room temperature ZT around unity. Recent research progress in nanostructured materials and composite materials enlightened the path to enhance the ZT above 1. Nanowire array topologies offer promise for engineering the electrical conductivity and phonon scattering effects, both of which have been studied extensively since the 1990s. Conventional porous anodic alumina (PAA) was used for successful fabrication of Bi2Te3 nanowire arrays, but with array thicknesses limited to tens of μm, too thin for high performance TE devices. The parallel nanowire arrays also suffer from mechanical fragility, low Bi2Te3 volume fraction, limited thermal conductivity suppression, vulnerability to shear load and slow template fabrication. In this work, I investigated the Bi2Te3 branched nanowire array (BNA) topology that features nanostructure-to-bulk-like materials integration and radially modified nanowire compositions, allowing for thermal conductivity (κ) reduction, multiscale nanostructure creation, preservation of power factor (S2σ), strain relaxation and shear compliance. Branched Bi2Te3 nanowire arrays were fabricated from the bottom up by electrochemically depositing Bi2Te3 into 300-500 μm thick branched porous anodic alumina (BPAA) templates followed by vapor annealing. The annealing process homogenizes the native point defects and can be used to introduce Se as an axially-graded dopant, which also forms nanocrystalline Bi2SeTe2 phonon scatterers. The thic kness of the nanowire array device can be fabricated up to 350 μm (wire aspect ratio > 1000:1), which is approaching commercialized bulk-form TE elements. Various characterization techniques including XRD, FESEM, HRTEM, EDS, AFM, etc. were employed to analyze the morphologic, structural and stoichiometric properties of the material. At room temperature, characterization of electrical, thermal and Seebeck properties were performed to demonstrate the device-level fabrication viability. At 300K, thermal conductivity was measured to be 0.5W/m-K. Electrical conductivity was measured at ~1.43x104 S/m. An effective bulk ZT of 0.31 was measured and the microscopic corrected value was 0.39. To demonstrate the p-type TE counterpart, pulsed laser assisted electrodeposition was used to fabricate Bi0.5Sb1.5Te3 nanowires. In addition, in order to calculate the optimum thermoelectric element leg length under different heat transfer conditions, a numerical model of thermoelectric device for both n- and p-type legs was developed in Matlab and powered by Rappture on nanoHUB.org. The demonstration of Bi2Te3 branched nanowire array structures enables a nano-to-bulk, composition-modulated and potentially scalable method to fabricate thermoelectric materials. The BNA structure maintains the nanowire electrical conduction continuity by electrochemical deposition, and offers extensive control over the wire radial composition and nanostructure. Moreover, the BNA’s phonon scattering effect is attributed to nanowire array branching, high surface to volume ratios, grain boundaries, Bi2SeTe2 nanocrystals and atomic alloying, covering length scales ranging from tens of μm down to less than 1 nm. Overall, the branched Bi2Te3 nanowire array as a bulk-like thermoelectric material is a promising structure for enhancing the figure of merit, ZT, and has promise to lead to the development of superior engineered nanomaterials as a substitute for bulk Bi2Te3 alloy materials. This work was partially supported by Office of Naval Research. Date: Thursday, April 10, 2014 Time: 10:30 A.M. Place: DLR 143A

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FW: Nanodays Volunteers
by Shakouri, Ali 03 Apr '14

03 Apr '14

Dear All, NanoDays 2014 will be held next Thursday and Friday, April 10th and 11th from 9am to 1pm. It will help us a lot if you could volunteer a few hours of your time for this program. You just need to sit at pre-made activity tables and help the students go over some simple hands on activities and explain the nano concepts behind the activity. If you could help, please see Jaime in BRK 1027 or email her at jjturner(a)purdue.edu<mailto:jjturner@purdue.edu> to sign up for a time. Thanks a lot. Best regards, Ali

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Olympus LEXT OLS4100 confocal microscope demo today at 2pm in BRK2233
by Wesley Allen 11 Mar '14

11 Mar '14

All, Olympus is here this week demoing their new LEXT OLS4100 confocal microscope. *A demo of its use will be done at 2-3pm today (3/11) in BRK2233.* You can also schedule time to use the instrument to image your sample this week. If you are interested, please bring your sample to BRK2233 and setup a time with Chris Vander Tuuk of Olympus. The LEXT OLS4100 is a Laser Scanning Microscope to perform non-contact 3D observations and measurements of surface features at 10 nanometer resolutions. It also features a fast image acquisition and a high-resolution image over a wider area. [image: LEXT OLS4100 Industrial Laser Confocal Microscopes 3D] Thanks! Wesley Allen Graduate Research Assistant ARES Group - Purdue University Birck Nanotechnology Center, Rm 1088 1205 West State Street West Lafayette, IN 47907-2057 p: 765-544-0001 e: wnallen(a)purdue.edu

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Nanodays Registration - Birck Grad Student participation requested
by Turner, Jaime J 27 Feb '14

27 Feb '14

Dear Birck Grad Students, Please see below the registration information for this year's Nanodays. Our Director of Birck, Professor Shakouri is highly recommending participation by Birck's graduate students, so if you are at all able to volunteer please do so. NanoDays is a nationwide festival of educational programs about nanoscale science and engineering and its potential impact on the future. Discovery Park's Birck Nanotechnology Center has hosted NanoDays activities at Purdue since 2010, and we are in the planning stages for this year's events, which will take place April 9-12, 2014. There will be 4 NanoDays events this year: * Wednesday 6-8pm, April 9: Girl Scouts in Birck * Thursday, 9am - 1pm, April 10: Middle school students in Birck * Friday, 9am- 1 pm, April 11: High school students in Birck * Saturday 10am - 4pm, April 12: General Public at Spring Fest Our vision for NanoDays 2014 is to 1) show why nano research is relevant and important to students in grades 4-12, and 2) show the relationships between each research topic and some of the big ideas in nanoscience. There will be two types of activity team: 1) Research activity teams - based on Graduate Student Research A graduate student researcher will work with a few undergraduate students, and as a team they will create an engaging activity to communicate the importance of the research at a level appropriate for our audience, and show connections to the big ideas in nano. 2) Conceptual activity teams- based on the NanoDays kits Teams of students will facilitate activities from the NanoDays kits. These activities have been selected and extensively tested by education professionals. In addition to teaching important concepts in nanoscience, the concept teams will help students see the connections between the nano concepts and nanotechnology research. We need your help! Please volunteer to make this event a success. We are looking for: * Graduate students who do nano-related research * Undergraduate and graduate students with some science background who are interested in engaging students with nanoscience concepts. * Students who would like to help with other NanoDays tasks, such as giving tours, providing directions and general flow and crowd control. You do not need to be a science, engineering or technology major to participate, but some scientific background will help. Volunteers are expected to participate in approximately 4 hours of training before going "live", and are asked to commit to working for at least 2 hours during NanoDays, though attending for the entire event is encouraged. In return, you get to be part of one of the biggest events for the smallest science, one that will make a difference to hundreds of middle school and high school students. Developing and facilitating NanoDays activities will also look great on your resume. Last year, over 800 students visited NanoDays at Birck, so we need a large cadre of volunteers. If you are interested in volunteering, please sign up by following this link: https://docs.google.com/forms/d/1Hvnfy-tR2h8jE_KHsa0E_YYcmJ8l7uynA75dNC3ONM… We hope that you will volunteer to help with NanoDays 2014 at Purdue! Jaime Turner Birck Nanotechnology Center 1205 West State Street West Lafayette, IN 47907-2057 Email: jjturner(a)purdue.edu<mailto:jjturner@purdue.edu> Phone: 765-494-3509

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Fwd: nsac - question
by Mikhail Shalaginov 18 Feb '14

18 Feb '14

Folks- Does anybody could help Selva? Thank you. -Misha ---------- Forwarded message ---------- From: Vadivel Murugan, Selva Kumaran <icwebmaster(a)purdue.edu> Date: Fri, Feb 7, 2014 at 5:25 PM Subject: nsac - question To: "jjv(a)purdue.edu" <jjv(a)purdue.edu> Cc: "shalaginov(a)purdue.edu" <shalaginov(a)purdue.edu> Hi, I'm a PhD student in ECE at Purdue. I'm working on a project where there is need to make ALD on Si wafer. There is need for me to vacuum clean my wafer and my glassware. I've not used the involved solutions before (for example: Piranha and Aqua Regia solutions). So I'm in need of someone who could just show me how to clean my wafer using them so that I don't hurt myself when using them. I don't know any grad student who could help me on this. It will be helpful if you could at least suggest whom to contact for this. Thanks, Selva -- Mikhail Y. Shalaginov PhD student Research assistant Purdue University Birck Nanotechnology Center 1205 West State Street West Lafayette, IN 47907-2057 tel: +1 765 496 3350; fax: +1 765 496 2018 email: shalaginov(a)purdue.edu http://web.ics.purdue.edu/~mshalagi/

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FW: Announcing the 2014 Noble Metal Nanoparticles GRS
by Turner, Jaime J 17 Feb '14

17 Feb '14

From: GRC Announcements [mailto:announcements@grc.org] Sent: Friday, February 14, 2014 9:35 AM To: mknapp(a)grc.org<mailto:mknapp@grc.org> Subject: Announcing the 2014 Noble Metal Nanoparticles GRS Dear Colleague, It is my pleasure to invite you to apply for the 2014 Noble Metal Nanoparticles Gordon Research Seminar (GRS), which will be held at Mount Holyoke College in Massachusetts during the weekend of June 14-15, 2014. This year we have invited a fantastic keynote speaker, Prof. Catherine Murphy from the University of Illinois at Urbana-Champaign, in addition to several mentors from academia, industry, and federal labs, to participate in an informal Q&A panel. As an attendee of the inaugural 2012 Noble Metal NPs GRS, we hope you will be interested in attending again this summer. We are also counting on you to help spread the word, so that we can reach out to an even more diverse audience with interesting new research! Attached with this email is a flyer we have prepared to announce the event. We hope that you could print out some copies and distribute them on departmental message boards, in addition to forwarding them by email to other student contacts in our research field. Of course we encourage you to first apply to the seminar and the related GRC that takes place the following week. In the spirit of the Gordon Conferences, we expect you to present your newest research findings in poster format. We will also select the best abstracts among interested applicants to fill in the oral presentation sessions of the weekend (so be sure to submit a good abstract!). Finally, a few applicants will be selected to serve as discussion leaders during the research sessions. As previous attendees with a good idea of how the seminar works, you would be excellent candidates either for an oral presentation or as a discussion leader, so please consider checking those boxes on the application! The application deadline to be considered for an oral presentation is March 14, 2014. The general deadline for a poster presenter is May 17, 2014. The online application can be found here by clicking 'Online Application' in the upper right panel: https://www.grc.org/programs.aspx?year=2014&program=grs_noble Please do not hesitate to contact myself or the associate chairs, Chris DeSantis (cdesanti(a)umail.iu.edu<mailto:cdesanti@umail.iu.edu>) and Lisa Brown (lisabrown(a)rice.edu<mailto:lisabrown@rice.edu>), should you have any questions or suggestions for the 2014 GRS. Best, Dr. Randy Carney Department of Biochemistry and Molecular Medicine University of California Davis Medical Center 2700 Stockton Blvd. Sacramento, CA 95817 rcarney(a)ucdavis.edu<mailto:rcarney@ucdavis.edu> Follow GRC: Facebook<https://www.facebook.com/GordonResearchConferences/> | Twitter<https://twitter.com/GordonConf/> This email message from Gordon Research Conferences is intended only for the individual or entity to which it is addressed. This email may contain confidential or privileged information. If you are not the intended recipient, any disclosure, copying, use, or distribution of the information included in this message and any attachments is prohibited. If you have received this communication in error, please notify us by reply e-mail and immediately and permanently delete this message and any attachments. Thank you.

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FW: Research Internship in Science & Engineering (RISE) program 2014
by Turner, Jaime J 17 Feb '14

17 Feb '14

Greetings from Indo-US Science & Technology Forum! Indo-US Science & Technology Forum has been successfully running the Research Internships in Science & Engineering (RISE) program from last four years. The Program provides a unique opportunity for science, technology, engineering and medical students from the United States to undertake internship for a period of 3 months in national laboratories, federal research centers, academic research institutes and private R & D laboratories in India. The objective of the program is to provide students exposure to Indian S&T milieu, gain practical skills and develop collaborative networks. Internships are envisaged as a source of mutual cultural and professional enrichment for both the interns and their host institutions. The call for 2014 is currently on with submission deadline of 31 March 2014. Please find attached the announcement for the program. More information about the program is available on our website http://www.indousstf.org/RiseProgram/Home.html We will appreciate if you can share this information with interested students and faculty in your institution and help us in the successful outreach of the RISE program. Feel free to contact for any further information. Best regards, Smriti Dr. Smriti Trikha Senior Science Manager INDO-US S&T FORUM Fulbright House 12, Hailey Road New Delhi 110 001 Ph: 011 42691700 www.indousstf.org<http://www.indousstf.org>

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NSAC: Robert Sayer Presentation CANCELLED
by Alfredo Tuesta 05 Feb '14

05 Feb '14

Due to the snow emergency the presentation for today at 4:30PM in MRGN 121 has been cancelled. Alfredo NSAC Social Chair -- PhD Candidate Purdue University School of Mechanical Engineering Birck Nanotechnology Center 1205 West State Street (Office 2234) West Lafayette, IN 47907-2057

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