DOCSLIB.ORG

Small Is Big Investigating Nanotechnology and Its Applications TEACHER NOTES

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Small Is Big Investigating Nanotechnology and Its Applications TEACHER NOTES Small is Big Investigating Nanotechnology and its Applications TEACHER NOTES Lesson Overview Nanotechnology is the science of studying and creating materials, devices, and systems using very small particles that measure from 1 to 100 nanometers. This investigation introduces students to the nanoscale. They work in cooperative groups to understand key ideas related to nanotechnology and identify examples of its use. Inquiry – Students investigate key concepts and structures used in nanotechnology. They discover that matter at the nanoscale has different properties and behavior than the same matter at a larger scale. They learn that advances in technology spur innovation in product use and development. NOS – Understand how nanotechnology is being applied to create new materials (science is a blend of logic and imagination). STEM – Students conduct internet-based research using wireless technology to learn about nanotechnology; they determine how engineers apply nanoscale particles and systems to improve methods and develop new products. Suggested Time 3 45-minute periods Boil water just before class Set up document camera Class Materials for teacher demonstration. 20 cm nitinol wire 20 cm copper or other metal wire Print and Electronic Resources 4 250 mL beakers • National Nanotechnology Initiative laptop computers with internet access http://www.nano.gov/ hot plate • Nanooze Magazine Bunsen burner or candle http://www.nanooze.org/main/Nano test tube clamp oze/English.html pot holder • How Stuff Works http://science.howstuffworks.com/n Preparation anotechnology.htm# Reserve a computer cart for • Nanotechnology: Big Things from a classroom use. Tiny World, National Identify and bookmark websites for Nanotechnology Initiative, July 7, student research. 2008. Shape nitinol (memory wire) for teacher demonstration. Bend the wire into a shape, such as a letter. Holding it with a pair of test tube clamps, heat the wire over a candle or Bunsen burner. Let the wire cool on a pot holder. Straighten out the wire. © Fairfax County School Board page 1 This document may be reproduced for classroom use only and may not be used or reproduced for any other purpose. Small is Big Investigating Nanotechnology and its Applications TEACHER NOTES Key Terms (such as the development of the nanoscale scanning tunneling microscope and nanotechnology atomic force microscope) have given scientists the tools to understand how nanostructures work and, more Essential Understandings importantly, why they work. Conceptual Understanding ► All matter has physical and Researchers have found that particles chemical properties. in the range of 1 to 100 nanometers ► The ability to manipulate the have significantly different properties placement of individual atoms in from particles of the same substance in tiny structures allows for the the visible range. Properties such as design of new type of materials melting point, fluorescence, electrical with desired properties. conductivity, magnetic permeability ► Matter at the nanoscale has (the ability of a material to support the unusual properties and functions formation of a magnetic field within because of its small size and large itself), and chemical reactivity have surface area. been shown to change with the size of Procedural Knowledge the particle. Gold particles, for ► A nanometer (nm) is one billionth instance, are usually gold on the visible of a meter. 1nm = 0.000000001 m -9 scale, but appear red or purple at the (or 1.0 x 10 m). It takes about 3 - nanoscale. 10 atoms to span the length of a nanometer. The difference in the properties of ► Nanotechnology is the study and matter at the nanoscale has been creation of functional materials, attributed to their larger surface-to- devices, and systems using matter volume ratios. As the surface area of that measures from 1 to 100 matter increases, more of the nanometers. substance contacts surrounding ► Nanotechnology has produced new materials; this impacts reactivity. The knowledge and innovations that ability to manipulate the structure of a were not previously possible. substance at the nanoscale allows scientists to tailor-make materials with Teacher Information specific properties that can make them Why is there so much interest in stronger, lighter, more durable, or nanotechnology? There is nothing better conductors of electricity. Over especially new about it. Medieval 800 consumer nanoproducts are artists used nanoscale gold salts to currently available in the industries of produce vibrant colors for their stained sports equipment, textiles, cosmetics, glass window designs and nature food storage, automotive products, routinely manipulates nanoparticles to electronics, information technology, air make proteins. The big difference is and water filtration, and medical that modern advances in microscopy treatment and diagnostics. © Fairfax County School Board page 2 This document may be reproduced for classroom use only and may not be used or reproduced for any other purpose. Small is Big Investigating Nanotechnology and its Applications TEACHER NOTES New processes and technologies carry 2. Pass the nitinol wire around the both benefits and risks. Temperature, room and allow students to salinity, habitat, or other biological describe its properties. Record factors may transform nanomaterials their responses on the chart in the released into the environment and physical properties column. Repeat change atmospheric, soil, or water this same process with the other chemistry producing unintended wire. consequences that impact human health and the environment. As a 3. ENGAGE - Select a student result, the United States has created volunteer to bend the nitinol wire the National Nanotechnology Initiative into any shape. Select a second (NNI) that coordinates the volunteer to bend the other wire nanotechnology-related activities of 25 into any shape. Display the shapes federal agencies in the areas of of the two wires for all students to science, engineering, technology, and observe. regulatory affairs. This coordinated research provides data needed to 4. Put both wires into a beaker and assess the risks to public health and pour cold water over them; have the environment while pursuing the the class observe the results. A beneficial use of nanotechnology. document camera or other method of projection may be used so that Teaching Suggestions all students clearly see the effect of Pre-Assessment the water on the metals (i.e., none). Each student will name the biggest and smallest things with which they are 5. Next, pour the cold water off and familiar and list five other things that then pour boiling water over the fall between them, in size order. Each wires in the beaker. Make sure that student will also demonstrate the students can see clearly because relationship between meters, they will observe that the nitinol centimeters, and millimeters using a wire will transform into the shape variety of systems (e.g., fraction, you molded before the start of class decimal, and exponent). (see Preparation) whereas the other wire will not. Before Investigation 1. LINK – Ask students to list as many 6. Ask students to observe the new of the physical and chemical properties of the wires and add properties of matter they have them to the properties chart created studied in this unit as they can in earlier. Ask students to name the two minutes. Record their new property they have just responses on a large class chart observed (shape memory). Ask that has been divided into two them to suggest practical uses for columns – one for each type of shape memory (e.g., repairing property. broken bones, straightening teeth, reinforcing arteries and veins, © Fairfax County School Board page 3 This document may be reproduced for classroom use only and may not be used or reproduced for any other purpose. Small is Big Investigating Nanotechnology and its Applications TEACHER NOTES maintaining the shape of golf clubs supplying newsprint or other and eyeglasses, etc.). method for groups to show what they have identified as the key 7. EXPLAIN - Tell students they have ideas in each passage. Have the just witnessed an example of class come to consensus on the nanotechnology. Ask them if they key ideas for each of the eight key are familiar with the term. If anyone concepts of nanotechnology. is, ask them to briefly share what it is, and how they know about it. 11. Read aloud Step 1 (S 246) and Note: Students will conduct explain to students that they will collaborative research on come back to apply what they learn nanotechnology so the teacher about nanotechnology to these does not need to explicitly teach concepts after they have conducted about nanotechnology since that is their research about different types what students will discover from of nanotechnology. their research. 12. Have students count off (1-8) and 8. Read together the opening form new groups of 3-4 students paragraphs as well as the based upon number (i.e., all the 1's Questions for investigation. Ask in a group, 2's in a group, etc.). students to complete the Prediction which asks them to 13. Read Step 2 (S 247) and assign identify which of the everyday one category of nanotechnology to products listed incorporate each group. Students can use the nanotechnology (all are examples online references listed in the of nanotechnology except the iPod investigation or other resources and tiny camera). provided by you to conduct their research. Remind groups that they 9. Tell students they will will need to be concise in their
Load more

Recommended publications
  • Biomedical Nanotechnology.Pdf
    BIOMEDICAL NANOTECHNOLOGY BIOMEDICAL NANOTECHNOLOGY Edited by Neelina H. Malsch Boca Raton London New York Singapore CRC PRESS, a Taylor & Francis title, part of the Taylor and Francis Group. Published in 2005 by CRC Press Taylor & Francis Group 6000 Broken Sound Parkway NW, Suite 300 Boca Raton, FL 33487-2742 © 2005 by Taylor & Francis Group, LLC CRC Press is an imprint of Taylor & Francis Group No claim to original U.S. Government works Printed in the United States of America on acid-free paper 10987654321 International Standard Book Number-10: 0-8247-2579-4 (Hardcover) International Standard Book Number-13: 978-0-8247-2579-2 (Hardcover) Library of Congress Card Number 2005045702 This book contains information obtained from authentic and highly regarded sources. Reprinted material is quoted with permission, and sources are indicated. A wide variety of references are listed. Reasonable efforts have been made to publish reliable data and information, but the author and the publisher cannot assume responsibility for the validity of all materials or for the consequences of their use. No part of this book may be reprinted, reproduced, transmitted, or utilized in any form by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers. For permission to photocopy or use material electronically from this work, please access www.copyright.com (http://www.copyright.com/) or contact the Copyright Clearance Center, Inc. (CCC) 222 Rosewood Drive, Danvers, MA 01923, 978-750-8400. CCC is a not-for-profit organization that provides licenses and registration for a variety of users.
    [Show full text]
  • PDF Downloads
    Engineering Advances, 2021, 1(1), 26-30 http://www.hillpublisher.com/journals/ea/ ISSN Online: ****-**** ISSN Print: ****-**** Nanofabrics—The Smart Textile Nida Tabassum Khan1,*, Muhammad Jibran Khan2 1Department of Biotechnology, Faculty of Life Sciences and Informatics, Balochistan University of Information Technology En- gineering and Management Sciences, (BUITEMS), Quetta, Pakistan. 2Department of Electrical Engineering, Faculty of Information and Communication Technology, Balochistan University of Infor- mation Technology Engineering and Management Sciences, (BUITEMS), Quetta, Pakistan. How to cite this paper: Nida Tabassum Khan, Muhammad Jibran Khan. (2021) Abstract Nanofabrics—The Smart Textile. Engi- Nanotechnology is tied in with improving and carrying the up and coming bril- neering Advances, 1(1), 26-30. DOI: 10.26855/ea.2021.06.005 liant answers for nanoscale-level merchandise. It is tied in with organizing the particles to change measurements and improvement attributes, for example, bril- Received: April 28, 2021 liant texture. These textures can help makers with the additional significance of Accepted: May 25, 2021 expectations for everyday comforts, visual intrigue, and framework needed inno- Published: June 18, 2021 vative creations. Particles of nano size may uncover unexpected qualities unlike *Corresponding author: Nida Tabas- the mass material. Nanotechnology has multifunctional highlights in the produc- sum Khan, Department of Biotechnol- tion of textures in the advancement of resistance stain and wrinkles, fire resistant, ogy, Faculty of Life Sciences and In- antimicrobial and antistatic properties, dampness guideline, bright security and formatics, Balochistan University of Information Technology Engineering discharge attributes. Inside the texture the nanomaterials could impact various and Management Sciences, characteristics, including decrease electrical conductivity, combustibility and (BUITEMS), Quetta, Pakistan.
    [Show full text]
  • The Views of Experts and the Public Regarding Societal Preferences for Innovation in Nanotechnology
    The views of experts and the public regarding societal preferences for innovation in nanotechnology Nidhi Gupta Thesis committee Promoter Prof. Dr L.J. Frewer Professor emeritus, Food Safety and Consumer Behaviour Wageningen University Professor of Food & Society Newcastle University, UK Co-promotors Dr A.R.H. Fischer Assistant Professor, Marketing and Consumer Behaviour Group Wageningen University Dr F.W.H. Kampers Director, Biotechnology Center for Food and Health Innovation Wageningen University Other members Prof. Dr G. Antonides, Wageningen University Dr H.J.P Marvin, RIKILT, Wageningen University and Research Center Prof. Dr H. van Lente, Utrecht University Dr Q. Chaudhry, Food & Environment Research Agency (FERA), North Yorkshire,UK This research was conducted under the auspices of the Graduate School of Wageningen Social Sciences (WASS) The views of experts and the public regarding societal preferences for innovation in nanotechnology Nidhi Gupta Thesis submitted in fulfilment of the requirements for the degree of doctor at Wageningen University by the authority of the Rector Magnificus Prof. Dr M.J. Kropff, in the presence of the Thesis Committee appointed by the Academic Board to be defended in public on Monday 9 December 2013 at 1.30 p.m. in the Aula. Nidhi Gupta The views of experts and the public regarding societal preferences for innovation in nanotechnology, 188 pages PhD thesis, Wageningen University, Wageningen, NL (2013) With references, with summaries in English and Dutch ISBN: 978-94-6173-762-5 To Ma, Pa, Mannu and Mannat Contents A Abstract iii 1 General Introduction 1 1.1 Nanotechnology: exploring the future with key stakeholders . 3 1.2 Scope and outline of the thesis .
    [Show full text]
  • Supporting Information
    Electronic Supplementary Material (ESI) for RSC Advances. This journal is © The Royal Society of Chemistry 2016 Supporting Information For RSC Adv. “Green” Nano-Filters: Fine Nanofibers of Natural Protein for High Efficiency Filtration of Particulate Pollutants and Toxic Gases Hamid Souzandeh, Yu Wang*and Wei-Hong Zhong * School of Mechanical and Materials Engineering Washington State University, Pullman, WA 99164 (USA) E-mail: [email protected] [email protected] S0 Gelatin solution and nanofiber mat preparation. Gelatin was dissolved in mixed solvent (volume ratio, acetic acid : DI water = 80 : 20) with a concentration of 18 wt% at 65 °C. The mixed solvent was used to achieve a good electrospinning of the gelatin solution. With that ratio between water and acetic acid, it was found that a homogenous yellow solution and stable electrospinning of the solution can be achieved. The electrospinning of gelatin solution is a well- known process and the effect of viscosity on electrospinning of gelatin has been studied before.1 After the homogenous gelatin solution (18 wt%) is prepared, the nanofibers were spun at room temperature on an aluminum mesh substrate. The areal density of the nanofabrics was controlled by controlling the volume of the solution that was electrospun on the substrate. The gelatin nanofabrics possessed a thickness within the range of 8 – 20 μm. In particular, the sample with the best air filtration properties (areal density = 3.43 g/m2) possesses a thickness of about 16 μm. The gelatin nanofabrics can be handled manually even though they are not crosslinked, but it is challenging due to very high electrostatic charge of the nanofibers.
    [Show full text]
  • A Fine-Grained 3D IC Technology with NP-Dynamic Logic
    Received 13 June 2016; revised 24 February 2017; accepted 8 March 2017. Date of publication 20 March 2017; date of current version 7 June 2017. Digital Object Identifier 10.1109/TETC.2017.2684781 NP-Dynamic Skybridge: A Fine-Grained 3D IC Technology with NP-Dynamic Logic JIAJUN SHI, MINGYU LI, MOSTAFIZUR RAHMAN, SANTOSH KHASANVIS, AND CSABA ANDRAS MORITZ J. Shi, M. Li, and C.A. Moritz are with the Department of Electrical and Computer Engineering, University of Massachusetts, Amherst, MA 01003 M. Rahman is with the School of Computing and Engineering, University of Missouri, Kansas City, MO 65211 S. Khasanvis is with BlueRISC Inc., Amherst, MA 01002 CORRESPONDING AUTHOR: J. SHI ([email protected]) ABSTRACT A new 3D IC fabric named NP-Dynamic Skybridge is proposed that provides fine-grained vertical 3D integration for future technology scaling. Relying on a template of vertical nanowires, it expands our prior work to incorporate and utilize both n- and p-type transistors in a novel NP-Dynamic circuit-style compatible with true 3D integration. This enables a wide range of elementary logics leading to more compact circuits, simple clocking schemes for cascading logic stages and low buffer requirement. We detail new design concepts for larger-scale circuits, and evaluate our approach using a 4-bit nanoprocessor implemented in 16 nm technology node. A new pipelining scheme specifically designed for our 3D NP-Dynamic circuits is employed in the nanoprocessor. We compare our approach with 2D CMOS as well as state-of-the-art tran- sistor-level monolithic 3D IC (T-MI) approach. Benchmarking results for the 4-bit nanoprocessor show bene- fits of up to 56.7x density, 3.8x power and 1.7x throughput over 2D CMOS.
    [Show full text]
  • 33. B.Tech. in Nanotechnology
    SRM INSTITUTE OF SCIENCE AND TECHNOLOGY Kattankulathur, Kancheepuram District 603203, Tamil Nadu, India 33. B.Tech. in Nanotechnology 33. (a) Mission of the Department Mission Stmt - 1 Actively contribute for the development of nanoscience, engineering and technology through world-class infrastructure, teaching & research Mission Stmt - 2 Establish collaborative research with the institutions of national and international repute Mission Stmt - 3 Encourage industry-academia interactions to translate scientific findings into technological development to meet the societal needs Mission Stmt - 4 Organize and actively participate in workshops, conferences and seminars on advancements in nanoscience and nanotechnology Mission Stmt - 5 Focus on developing skills of students to enhance the employability in various organizations 33. (b) Program Educational Objectives (PEO) PEO - 1 Provide understanding of physical, chemical and biological principles in the multi-disciplinary field of nanoscience and nanotechnology PEO - 2 Develop skills on the synthesis of nanomaterials and fabrication of micro- and nano-structures PEO - 3 Familiarize the graduates with the advanced nanoscale characterization techniques and develop the analytical ability PEO - 4 Enable graduates with professional, scientific research, and computational skills for employment in industries, R & D centres and higher education PEO - 5 Prepare the graduates to take individual and team work responsibilities in a multidisciplinary environment 33. (c) Mission of the Department to Program Educational Objectives (PEO) Mapping Mission Stmt - 1 Mission Stmt - 2 Mission Stmt - 3 Mission Stmt - 4 Mission Stmt - 5 PEO - 1 H M L H L PEO - 2 H H M H H PEO - 3 H H M H M PEO - 4 H M H M H PEO - 5 M H H H M H – High Correlation, M – Medium Correlation, L – Low Correlation 33.
    [Show full text]
  • Skybridge: 3-D Integrated Circuit Technology Alternative to CMOS
    Skybridge: 3-D Integrated Circuit Technology Alternative to CMOS Mostafizur Rahman, Santosh Khasanvis, Jiajun Shi, Mingyu Li, and Csaba Andras Moritz Continuous scaling of CMOS has been the major catalyst doped precisely in isolated 3-D regions, which is impractical. in miniaturization of integrated circuits (ICs) and crucial In addition to these, there is no heat extraction capability for global socio-economic progress. However, scaling to inherent to CMOS to prevent thermal hotspot development. sub-20nm technologies is proving to be challenging as Admittedly, since the inception of vertical devices in 20006 MOSFETs are reaching their fundamental limits1 and there has been no success in the realization of 3-D CMOS interconnection bottleneck2 is dominating IC operational despite a significant industrial push. power and performance. Migrating to 3-D, as a way to In contrast to CMOS, that has evolved focusing on the advance scaling, has eluded us due to inherent device especially and requires a largely component-centric customization and manufacturing requirements in CMOS assembly, the Skybridge fabric shifts to a fabric-centric that are incompatible with 3-D organization. Partial mindset and provides an integrated solution for all technology attempts with die-die3 and layer-layer4 stacking have their aspects. First, it starts with a regular array of uniform vertical own limitations5. We propose a 3-D IC fabric technology, nanowires that forms the Skybridge template (Fig. 1A). SkybridgeTM, which offers paradigm shift in technology Second, its doping requirement is uniform, without regions, scaling as well as design. We co-architect Skybridge’s core and done once at the wafer level.
    [Show full text]
  • Sustainable Use of Nanomaterials in Textiles and Their Environmental Impact
    materials Review Sustainable Use of Nanomaterials in Textiles and Their Environmental Impact Haleema Saleem and Syed Javaid Zaidi * Center for Advanced Materials (CAM), Qatar University, Doha 2713, Qatar; [email protected] * Correspondence: [email protected]; Tel.: +974-4403-7723 Received: 15 October 2020; Accepted: 9 November 2020; Published: 13 November 2020 Abstract: At present, nanotechnology is a priority in research in several nations due to its massive capability and financial impact. However, due to the uncertainties and abnormalities in shape, size, and chemical compositions, the existence of certain nanomaterials may lead to dangerous effects on the human health and environment. The present review includes the different advanced applications of nanomaterials in textiles industries, as well as their associated environmental and health risks. The four main textile industry fields using nanomaterials, nanofinishing, nanocoatings, nanofibers, and nanocomposites, are analyzed. Different functional textiles with nanomaterials are also briefly reviewed. Most textile materials are in direct and prolonged contact with our skin. Hence, the influence of carcinogenic and toxic substances that are available in textiles must be comprehensively examined. Proper recognition of the conceivable benefits and accidental hazards of nanomaterials to our surroundings is significant for pursuing its development in the forthcoming years. The conclusions of the current paper are anticipated to increase awareness on the possible influence of nanomaterial-containing textile wastes and the significance of better regulations in regards to the ultimate disposal of these wastes. Keywords: nanomaterials; environmental impacts; textiles; toxicity; health and safety 1. Introduction The idea of nanotechnology was initially presented by Richard Feynman in the year 1959, through his speech “There’s Plenty of Room at the Bottom”, which was delivered at an American Physical Society conference, at the California Institute of Technology (Feynman, 1959, [1]).
    [Show full text]
  • Electrospun Nanofiber-Based Soft Electronics
    Wang et al. NPG Asia Materials (2021) 13:22 https://doi.org/10.1038/s41427-020-00267-8 NPG Asia Materials REVIEW ARTICLE Open Access Electrospun nanofiber-based soft electronics Yan Wang 1, Tomoyuki Yokota 1 and Takao Someya 1,2 Abstract Electrospun nanofibers have received considerable attention in the field of soft electronics owing to their promising advantages and superior properties in flexibility and/or stretchability, conductivity, and transparency; furthermore, their one-dimensional nanostructure, high surface area, and diverse fibrous morphologies are also desirable. Herein, we provide an overview of electrospun nanofiber-based soft electronics. A brief introduction of the unique structure and properties of electrospun nanofiber materials is provided, and assembly strategies for flexible/stretchable electronics are highlighted. We then summarize the latest progress in the design and fabrication of representative flexible/ stretchable electronic devices utilizing electrospun nanofibers, such as flexible/stretchable conductors, sensors, energy harvesting and storage devices, and transistors. Finally, a conclusion and several future research directions for electrospun nanofiber-based soft electronics are proposed. Introduction will limit their further advances with the aforementioned Flexible and stretchable electronics have attracted world- techniques, in addition to the complex procedures required wide attention in recent years due to their promising fea- during the fabrication of nanomaterials25,26. However, elec- tures, such as thinness,
    [Show full text]
  • Successful European Nanotechnology Research Outstanding Science and Technology to Match the Needs of Future Society
    EUROPEAN Research & Industrial COMMISSION Innovation technologies Successful European Nanotechnology Research Outstanding science and technology to match the needs of future society projects Studies and reports EUROPEAN COMMISSION Directorate-General for Research and Innovation Directorate G – Industrial Technologies Unit G.4 – Nano-and converging Sciences and Technologies Contact: Hans Hartmann Pedersen European Commission Office SDME 06/120 B-1049 Brussels Tel. +32 2 29 64906 Fax +32 2 29 86150 E-mail: [email protected] EUROPEAN COMMISSION Successful European Nanotechnology Research Outstanding science and technology to match the needs of future society Edited by the European Commission Directorate-General for Research and Innovation Directorate Industrial Technologies Directorate-General for Research and Innovation Nanosciences, nanotechnologies, materials 2011 and new production technologies (NMP) EUR 24524 EN Europe Direct is a service to help you find answers to your questions about the European Union Freephone number(*): 00 800 6 7 8 9 10 11 (*)Certain mobile telephone operators do not allow access to 00 800 numbers or these calls may be billed LEGAL NOTICE Neither the European Commission nor any person acting on behalf of the Commission is responsible for the use which might be made of the following information. The views expressed in this publication are the sole responsibility of the author and do not necessarily reflect the views of the European Commission. A great deal of additional information on the European Union is available on the Internet. It can be accessed through the Europa server (http://europa.eu). Cataloguing data can be found at the end of this publication.
    [Show full text]
  • Theresa Stellwag Mayer
    Theresa Stellwag Mayer Executive Vice President for Research and Partnerships Hovde Hall, Room 338 Professor, Electrical and Computer Engineering West Lafayette, IN 47907 Purdue University Voice: (814) 574-4455 www.purdue.edu/research Email: [email protected] Education 1993 Ph.D., Electrical Engineering, Purdue University, West Lafayette, IN 1989 M.S., Electrical Engineering, Purdue University, West Lafayette, IN 1988 B.S., Electrical Engineering, Minor, Mathematics, Virginia Tech, Blacksburg, VA Key Positions 2019 – pres. Executive Vice President for Research and Partnerships, Purdue University 2019 – pres. Professor, Electrical and Computer Engineering, Purdue University 2019 – pres. Research Professor, Electrical and Computer Engineering, Virginia Tech 2016 – 2019 Vice President for Research and Innovation, Virginia Tech 2016 – 2019 Professor, Electrical and Computer Engineering, Virginia Tech 2016 – 2019 Adjunct Professor, Electrical Engineering, Penn State University 2014 – 2016 Associate Dean for Research and Innovation, Penn State University 2012 – 2016 Distinguished Professor, Electrical Engineering, Penn State University 2009 – 2016 Professor, Materials Science and Engineering, Penn State University 2006 – 2014 Associate Director, Materials Research Institute, Penn State University 2006 – 2012 Professor, Electrical Engineering, Penn State University 1999 – 2005 Associate Professor, Electrical Engineering, Penn State University 1994 – 1999 Assistant Professor, Electrical Engineering, Penn State University 1988 – 1993 Research Assistant, Purdue University 1986 – 1988 Engineering Staff Member, Allied-Signal, Inc. Professional Summary Theresa S. Mayer is the executive vice president for research and partnerships at Purdue University, where she oversees the $670 million research enterprise of the university and supports holistic engagements with federal, industry, and global strategic partners. Prior to this role, she was the vice president for research and innovation at Virginia Tech.
    [Show full text]
  • A Molecular-Level Picture of Electrospinning
    water Article A Molecular-Level Picture of Electrospinning Jan Jirsák 1,2,* , Pavel Pokorný 3 , Pavel Holec 3 and Šárka Dˇediˇcová 1 1 Department of Chemistry, Faculty of Science, Jan Evangelista PurkynˇeUniversity in Ústí nad Labem, Pasteurova 3632/15, 400 96 Ústí nad Labem, Czech Republic 2 Department of Membrane Separation Processes, Institute of Chemical Process Fundamentals, Czech Academy of Sciences, Rozvojová 135/2, 165 02 Praha 6, Czech Republic 3 Department of Nonwovens and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, Studentská 1402/2, 461 17 Liberec 1, Czech Republic; [email protected] (P.P.); [email protected] (P.H.) * Correspondence: [email protected]; Tel.: +420-475-28-6807 Received: 14 August 2020; Accepted: 12 September 2020; Published: 15 September 2020 Abstract: Electrospinning is a modern and versatile method of producing nanofibers from polymer solutions or melts by the action of strong electric fields. The complex, multiscale nature of the process hinders its theoretical understanding, especially at the molecular level. The present article aims to contribute to the fundamental picture of the process by the molecular modeling of its nanoscale analogue and complements the picture by laboratory experiments at macroscale. Special attention is given to how the process is influenced by ions. Molecular dynamics (MD) is employed to model the time evolution of a nanodroplet of aqueous poly(ethylene glycol) (PEG) solution on a solid surface in a strong electric field. Two molecular weights of PEG are used, each in 12 aqueous solutions differing by the weight fraction of the polymer and the concentration of added NaCl.
    [Show full text]