https://engineering.wustl.edu/news/Pages/Aerosol-and-Air-Quality-Research-Lab-finds-new-technique-to-make-solar-cells.aspx642Aerosol and Air Quality Research Lab finds new technique to make solar cells<img alt="" src="/news/PublishingImages/Shalinee%20Kavadiya.JPG?RenditionID=1" style="BORDER:0px solid;" /><p>​​<span aria-hidden="true"></span>Shalinee Kavadiya, a doctoral student; Dariusz Niedzwiedzki, an <a href="https://incees.wustl.edu/">InCEES</a> research scientist; Su Huang, research assistant professor; and <a href="/Profiles/Pages/Pratim-Biswas.aspx">Pratim Biswas</a>, the Lucy & Stanley Lopata Professor, assistant vice chancellor for international programs and chair of the Department of Energy, Environmental & Chemical Engineering, recently published a paper in Advanced Energy Materials titled “Electrospray-assisted Fabrication of Moisture-resistant and Highly Stable Perovskite Solar Cells at Ambient Conditions.”</p><p>The paper describes a novel electrospray deposition technique to fabricate a perovskite layer for highly stable and efficient perovskite solar cells in ambient humidity conditions. The technique is promising for the large-scale commercial fabrication of perovskite solar cells. The paper is available via <a href="http://dx.doi.org/10.1002/aenm.201700210">Wiley Online Library.</a><br/></p>Shalinee Kavadiya2017-05-25T05:00:00ZThe technique is promising for the large-scale commercial fabrication of perovskite solar cells.
https://engineering.wustl.edu/news/Pages/Energy-and-environment-initiative-turns-10-keeps-growing.aspx623Energy and environment initiative turns 10, keeps growing<div class="div.youtube-wrap"><div class="iframe-container"> <iframe width="854" height="480" frameborder="0" src="https://www.youtube.com/embed/Fry5maaF9q4"></iframe>   </div> </div><p>​This Earth Day, leaders at Washington University in St. Louis announced a new name and an increased emphasis on the university’s united energy and environment effort: the International Center for Energy, Environment and Sustainability, or InCEES.<br/></p><img alt="" src="/news/PublishingImages/washu%20engineers%20InCEES.jpg?RenditionID=1" style="BORDER:0px solid;" /><p>The renamed InCEES is a collaborative initiative across Washington University and involves its many international partner universities.</p><p>“When we formed the International Center for Advanced Renewable Energy and Sustainability (I-CARES) in 2007, notice it did not include the word ‘environment,’ ” Chancellor Mark S. Wrighton said at the April 22 event in Knight Hall. “So today, on Earth Day 2017, the 10-year anniversary of the founding, we are changing the name.”<br/></p><p>They are altering some of the emphasis, too. Wrighton singled out a handful of areas for  additional affirmation and renewed commitment under InCEES:</p><p>Continue to stimulate major energy, environment and sustainability research projects across the campus with seed funding.</p><div><p></p><div><ul><li>Increase international participation. While stressing the interdisciplinary nature of the partners comprising the current InCEES model — Office of Sustainability, Tyson Research Center,  Environmental Studies Program, Consortium for Clean Coal Utilization, Photosynthetic Antenna Research Center and the Washington University Climate Change Initiative — the McDonnell Academy Global Energy & Environment Partnership (MAGEEP) as well as the McDonnell International Scholars Academy will be counted upon to enhance support and assistance abroad.<br/></li><li>Increase the focus on the environment, hence its place in the new name.<br/></li><li>Make it a priority for greater unification across university channels regionally and internationally to stress the areas of energy, environment and sustainability. “We have more work to do; all members of the community can make contributions,” Wrighton said.<br/></li></ul></div><p></p></div><p>“I want to underscore these last two parts,” he added. “These issues are going to continue to be a priority for Washington University. Considering the magnitude of the challenge and the potential adversity to the world, this is the responsibility of every major research university. As we travel and interact with leading faculty and students at our partner institutions, they share this commitment. Implementing these solutions is going to require international collaboration.”</p><p>The chancellor’s comments were echoed by <a href="https://incees.wustl.edu/people/himadri-pakrasi/">Himadri B. Pakrasi</a>, InCEES director, the Myron and Sonya Glassberg/Albert and Blanche Greensfelder Distinguished University Professor and professor of energy in the School of Engineering & Applied Science. “With more than 1 billion people globally lacking access to electricity, and with total energy demand expected to increase by almost 50 percent by 2040, it is critical that we work together to identify solutions and systems that provide access to electricity without adversely affecting the environment,” Pakrasi said. “The costs of not addressing the challenges are great and won’t be equally shared by everyone. Energy poverty and the impacts of climate change are social justice issues. We all have a role to play, and the work we do at Washington University will benefit all people everywhere.”</p><p>Wrighton’s remarks before roughly 200 alumni, faculty and community partners followed a group of presentations on:<br/></p><div><ul><li>international activities and solar research by MAGEEP Director Pratim Biswas, the Lucy & Stanley Lopata Professor of Energy, Environmental & Chemical Engineering;<br/></li><li>Solar Decathlon and sustainable communities by Hongxi Yin, the InCEES associate professor in advanced building systems and architectural design in the Sam Fox School of Design & Visual Arts;<br/></li><li>environmental initiatives by David Fike, InCEES associate director and associate professor of earth and planetary sciences in Arts & Sciences;<br/></li><li>energy initiatives by Pakrasi;<br/></li><li>and a student perspective by Rachel Westrate, a 2016 Washington University graduate.<br/></li></ul></div><p>The keynote address was offered by <a href="https://wubio.wustl.edu/jackson">Peter Wyse Jackson</a>, president of the Missouri Botanical Garden and the George Engelmann Professor of Botany.</p><p>“Climate change and environmental degradation undermine progress achieved, and poor people suffer the most,” Wyse Jackson told the audience. “Each year, it gets harder and harder to achieve sustainability.”</p><p>Wrighton effectively concluded the event by looking back at the brief history of the Washington University-led initiative: “Ten years is just the beginning in terms of the magnitude of what we are going to have to do in order to address this major challenge in the world.”</p><p>For more information about InCEES, see <a href="https://incees.wustl.edu/">incees.wustl.edu</a> or <a href="https://twitter.com/INCEESWUSTL?lang=en">@INCEESWUSTL</a> on Twitter.<br/></p>Chancellor Mark S. Wrighton speaks at the 10th anniversary celebration of the university's International Center for Energy, Environment and Sustainability, or InCEES, formerly I-CARES. (Photo: Mary Butkus/Washington University)2017-04-26T05:00:00ZLeaders at Washington University in St. Louis announced a new name and an increased emphasis on the university’s united sustainability effort: the International Center for Energy, Environment and Sustainability, or InCEES.<p>New name, additional emphasis ahead for rechristened I-CARES: InCEES<br/></p>
https://engineering.wustl.edu/news/Pages/A-simple-sniff.aspx606A simple sniff <video preload="preload" width="100%" height="100%" controls="controls"> <source type="video/mp4" src="https://source.wustl.edu/wp-content/uploads/2017/04/BugStory_Final.mp4"></source> <a href="https://source.wustl.edu/wp-content/uploads/2017/04/BugStory_Final.mp4">https://source.wustl.edu/wp-content/uploads/2017/04/BugStory_Final.mp4</a></video> <p>Engineers at Washington University have discovered a new technique that could change drug delivery to the brain. They were able to apply a nanoparticle aerosol spray to the antenna of locusts, then track the nanoparticles as they traveled through the olfactory nerves, crossed the blood-brain barrier and accumulated in the brain. This new, non-invasive approach could someday make drug delivery as simple as a sniff for patients with brain injuries or tumors.</p><img alt="" src="/news/PublishingImages/washu%20engineering%20locust.jpg?RenditionID=1" style="BORDER:0px solid;" /><div id="__publishingReusableFragmentIdSection"><a href="/ReusableContent/News/34_.000">a</a></div><p>​Delivering life-saving drugs directly to the brain in a safe and effective way is a challenge for medical providers. One key reason: the blood-brain barrier, which protects the brain from tissue-specific drug delivery. Methods such as an injection or a pill aren’t as precise or immediate as doctors might prefer, and ensuring delivery right to the brain often requires invasive, risky techniques.<br/></p><p>​A team of engineers from Washington University in St. Louis has developed a new nanoparticle generation-delivery method that could someday vastly improve drug delivery to the brain, making it as simple as a sniff.</p><p>“This would be a nanoparticle nasal spray, and the delivery system could allow a therapeutic dose of medicine to reach the brain within 30 minutes to one hour,” said Ramesh Raliya, research scientist at the School of Engineering & Applied Science.<br/></p><p></p><p>“The blood-brain barrier protects the brain from foreign substances in the blood that may injure the brain,” Raliya said. “But when we need to deliver something there, getting through that barrier is difficult and invasive. Our non-invasive technique can deliver drugs via nanoparticles, so there’s less risk and better response times.”</p><p>The novel approach is based on aerosol science and engineering principles that allow the generation of monodisperse nanoparticles, which can deposit on upper regions of the nasal cavity via diffusion. Working with Assistant Vice Chancellor Pratim Biswas, chair of the Department of Energy, Environmental & Chemical Engineering and the Lucy & Stanley Lopata Professor, Raliya developed an aerosol consisting of gold nanoparticles of controlled size, shape and surface charge. The nanoparticles were tagged with fluorescent markers, allowing the researchers to track their movement.</p><p>Next, Raliya and biomedical engineering postdoctoral fellow Debajit Saha exposed locusts’ antennae to the aerosol, and observed the nanoparticles travel from the antennas up through the olfactory nerves. Due to their tiny size, the nanoparticles passed through the brain-blood barrier, reaching the brain and suffusing it in a matter of minutes.<br/></p><p>The team tested the concept in locusts because the blood-brain barriers in the insects and humans have anatomical similarities, and the researchers consider going through the nasal regions to neural pathways as the optimal way to access the brain.</p><blockquote>“The shortest and possibly the easiest path to the brain is through your nose,” said Barani Raman, associate professor of biomedical engineering. “Your nose, the olfactory bulb and then olfactory cortex: two relays and you’ve reached the cortex. The same is true for invertebrate olfactory circuitry, although the latter is a relatively simpler system, with supraesophageal ganglion instead of an olfactory bulb and cortex.”</blockquote> <p>To determine whether or not the foreign nanoparticles disrupted normal brain function, Saha examined the physiological response of olfactory neurons in the locusts before and after the nanoparticle delivery. Several hours after the nanoparticle uptake, no noticeable change in the electrophysiological responses was detected.</p><p>“This is only a beginning of a cool set of studies that can be performed to make nanoparticle-based drug delivery approaches more principled,” Raman said.</p><p>The next phase of research involves fusing the gold nanoparticles with various medicines, and using ultrasound to target a more precise dose to specific areas of the brain, which would be especially beneficial in brain-tumor cases.</p><p>“We want to drug target delivery within the brain using this non-invasive approach,” Raliya said.  “In the case of a brain tumor, we hope to use focused ultrasound so we can guide the particles to collect at that particular point.”</p><p>The research was recently published online at <a href="http://www.nature.com/articles/srep44718">Scientific Reports</a>; Raliya may be reached for interviews at <a href="mailto:rameshraliya@wustl.edu">rameshraliya@wustl.edu</a>.<br/></p> <SPAN ID="__publishingReusableFragment"></SPAN> <p> <br/> </p><p>​<br/></p><p> <br/> </p> <span> <div class="cstm-section"><h3>Media Coverage<br/></h3><div> <strong>KWMU (St. Louis Public Radio): </strong><a href="http://news.stlpublicradio.org/post/future-treating-brain-disease-may-require-just-sniff#stream/0">In the future, treating brain disease may require just a sniff</a><br/><br/><strong>nanowerk: </strong> <a href="http://www.nanowerk.com/nanotechnology-news/newsid=46382.php">Next-generation nanoparticle nasal spray for drug delivery to the brain</a><br/><br/><strong>Innovation Toronto:</strong> <a href="http://www.innovationtoronto.com/2017/04/a-new-nanoparticle-drug-delivery-method-takes-just-a-sniff/">A new nanoparticle drug delivery method takes just a sniff</a><br/></div></div></span> <p> <br/> </p>Engineers at Washington University in St. Louis used nanoparticles, aerosol technology and locusts in proof of concept research that could someday change the way medicine is delivered to the brain. Erika Ebsworth-Gooldhttps://source.wustl.edu/2017/04/a-simple-sniff/2017-04-12T05:00:00ZA team of engineers from Washington University in St. Louis has combined nanoparticles, aerosol science and locusts in new proof-of-concept research that could someday vastly improve drug delivery to the brain, making it as simple as a sniff.<p>​<span style="font-size: 1.05em;">Nanoparticle research tested in locusts focuses on new drug-delivery method</span></p>
https://engineering.wustl.edu/news/Pages/CRETE-House.aspx601CRETE House<img alt="" src="/news/PublishingImages/WU_D5_DIGITAL_04_2016-12-15-medres-760x428.jpg?RenditionID=1" style="BORDER:0px solid;" /><p>​Concrete is durable, inexpensive and ubiquitous. But is it sustainable?​<br/><br/>Yes, argues <a href="https://icares.wustl.edu/people/hongxi-yin/">Hongxi Yin</a>, I-CARES associate professor at Washington University in St. Louis. Though the manufacturing process emits carbon dioxide, those emissions are offset by the material’s longevity and unique thermal properties.<br/></p><p>“Concrete will last 100 years,” explains Yin, an internationally recognized expert on green development. It also boasts a high heat capacity, or thermal mass. On a summer afternoon, concrete walls absorb the warmth of the sun, slowing the rise of interior temperatures. On a summer evening, natural ventilation releases the heat back outside, dispersing it into the cool night air.<br/></p><p>“Ancient peoples used thermal mass, but we’ve ignored that potential,” Yin says. “If you design it well, with the right systems and insulations, you can make a net-zero-energy concrete building.”<br/></p><h3>Solar Decathlon</h3><p>Now that argument is being put to the test as students from the Sam Fox School of Design & Visual Arts and the School of Engineering & Applied Science prepare for <a href="https://www.solardecathlon.gov/">Solar Decathlon 2017</a>.</p><p>Sponsored by the U.S. Department of Energy, the biennial competition challenges university teams from around the world to design and build full-size, solar-powered houses. This year’s event, which takes place in Denver Oct. 5-15, will feature cutting-edge prototypes ranging from 650 to 1,000 square feet.</p><p>Winners will be selected on the basis of: design excellence and innovation; energy and water efficiency; and market potential. Each structure must be capable of running typical household functions using only global solar radiation. Any other energy sources, such as batteries or AC grid energy, must be offset by an equal or greater amount of energy produced.</p><p>At stake is $2 million in prize money.</p><p>“Architecture is about bridging the gap between concept and reality,” says faculty project architect <a href="http://www.samfoxschool.wustl.edu/portfolios/faculty/pablo_moyano">Pablo Moyano</a>, senior lecturer in architecture in the Sam Fox School, who is leading the studio with Yin and faculty project manager Ryan Abendroth. “In a typical studio, students can make impressive designs. But with Solar Decathlon, they actually have to build them.</p><p>“Students are exposed to the entire process, from conceptual design to construction and operation,” Moyano adds. “That’s a unique experience and a valuable lesson.<br/></p><h3>Team WashU</h3><p><img src="/news/PublishingImages/Hongxi-Yin-panel-construction-225x300.jpg" class="ms-rtePosition-2" alt="" style="margin: 5px;"/>Though Denver is still six months away, <a href="https://solardecathlon.wustl.edu/">Team WashU</a> has been hard at work for nearly two years.</p><p>In fall 2015, Yin and Moyano offered the first of four semester–long studios. Students began by creating individual proposals, which gradually merged into a final design. They also investigated sustainable strategies for heating, cooling and ventilation, looking for ways to reduce and/or offset energy consumption while still maintaining a comfortable, functional space.<br/></p><p>“The trickiest part has been crystalizing four semesters’ worth of design ideas into a single project,” says Adam Goldberg, a dual master’s candidate in architecture and construction management. “So much of the design world, and architecture education, is theoretical. Solar Decathlon forces you to really grapple with every detail and connection.”</p><p>Meanwhile, computer science students, working under the direction of <a href="/Profiles/Pages/Chenyang-Lu.aspx">Chenyang Lu</a>, the Fullgraf Professor in Computer Science & Engineering, have worked to develop a custom operating system for the house. Yin and adjunct engineering professor Tim Michels co-taught a course on building energy.</p><p>In all, more than 100 graduate and undergraduate students have participated so far. The budget of about $550,000 represents a mix of university contributions, external fundraising and industry sponsorships.</p><p>“This is a research project,” Yin says. “Our challenge is not to deliver one building. Our challenge is to create a transdisciplinary framework that will improve efficiency throughout the industry.</p><p>“Buildings account for up to 40 percent of energy consumption and carbon dioxide emissions worldwide,” Yin adds. “To conquer global warming, we have to find ways of dealing with buildings in the most natural, most affordable ways possible.”<br/></p><h3>CRETE House</h3><p><img src="/news/PublishingImages/WashU%20Engineering%20Solar%20Decathlon.jpg?RenditionID=1" class="ms-rtePosition-2" alt="" style="margin: 5px;"/>Many of this year’s Solar Decathlon entrants draw from a similar palette of design ideas: solar panels, green roofs, flexible floorplans and sophisticated monitoring abound. Virtually all rely on light-frame wood or steel construction.</p><p>CRETE House, the entry by Team WashU, stands in marked contrast. The 995-square-foot structure, which will eventually serve as a long-term residence for scientists at <a href="http://www.tyson.wustl.edu/">Tyson Research Center</a>, will be built from six large precast concrete panels. Oversized gutters will provide shade support, extending the living space outdoors. A water collection system and series of modular planters will support hydroponic gardening.</p><p>“Concrete has a lot of upsides,” Moyano says. “It’s resistant to fire, humidity, mold and insects. It’s resistant to extreme weather, such as hurricanes and tornados. It’s durable. The main downside is weight. Concrete is heavy.”</p><p>To counteract that weight, students have worked with the Precast/Prestress Concrete Institute — particularly its Midwest, Mountain States, Central Region and Illinois & Wisconsin affiliates — to design and cast <a href="http://www.pci.org/design_resources/about_precast/walls/">sandwich panels</a> using <a href="http://www.ductal.com/en">Ductal</a>, a new, high-performance mixture. “Ductal is six times stronger than regular concrete,” Moyano says. “This allows us to create panels that are thinner and about 30% lighter than standard precast concrete.”</p><p>Perhaps most strikingly, the house does not contain a traditional HVAC system. Instead — capitalizing on concrete’s high thermal mass — the house is primarily warmed and cooled by water coils embedded within the panels.</p><p>“It’s a hydraulic system,” Yin says. “The thermal mass radiates a uniform, comfortable temperature.”</p><p>In the coming weeks, students will begin assembling CRETE House at Washington University’s North Campus, and will spend much of the summer refining and testing its systems. Then, in late August, they will take the house apart, ship it to Denver and assemble it again for the competition.</p><p>“Solar Decathlon is a big challenge, but also a great educational tool,” Yin concludes. “Students integrate cutting-edge architectural research with structural engineering, electrical engineering, manufacturing, computer science and biology.</p><p>“But the larger goal is to prepare students to face the future. How do we serve the community? How do we increase efficiency?  And how do we help to solve global warming and environmental issues?”<br/></p><div> <a href="https://www.solardecathlon.gov/"><img src="/news/PublishingImages/WashU%20Engineers%20Solar%20Decalthlon.gif" alt="" style="margin: 5px;"/></a></div><div class="cstm-section"><h3>Mission: Create a More Sustainable Future<br/></h3><ul><li> <a href="https://solardecathlon.wustl.edu/" style="font-size: 1em; background-color: #ffffff;">WashU Team Website</a><a href="https://solardecathlon.wustl.edu/"><br/></a></li><li> <a href="https://www.facebook.com/WashUSolarDecathlon/">Facebook</a><br/></li><li> <a href="https://twitter.com/TeamWashUSolar" style="font-size: 1em; background-color: #ffffff;">@TeamWashUSolar</a><br/></li><li> <a href="https://twitter.com/hashtag/SD2017?src=hash">#SD2017</a><br/></li></ul></div>A water collection system and series of modular planters support hydroponic gardening. (Image: Team WashU)By Liam Otten and Beth Millerhttps://source.wustl.edu/2017/04/concrete-house/2017-04-07T05:00:00ZConcrete is durable, inexpensive and ubiquitous. But is it sustainable?<p><span style="font-size: 1.05em;">Sam Fox School teams with Engineering & Applied Science for 2017 Solar Decathlon</span></p>
https://engineering.wustl.edu/news/Pages/WashU-Engineering-honors-distinguished-alumni.aspx600WashU Engineering honors distinguished alumni<p>​WashU Engineering alumni, ranging from civil engineers to aerospace engineers to entrepreneurs were among those who received Alumni Achievement Awards from the School of Engineering & Applied Science March 30 at the Saint Louis Art Museum. <br/></p><img alt="" src="/news/PublishingImages/WashU%20Engineering%20Alumni%20Achiemvent%20AWard.JPG?RenditionID=1" style="BORDER:0px solid;" /><h3>Libby Allman</h3><p>As vice president of manufacturing and product procurement at Hallmark Cards, Libby Allman leads domestic manufacturing and direct global sourcing activities in support of the greetings, home décor, gifts and retail businesses. Results of her leadership and expertise include growth in revenue, leading more than 1,000 employees through major operational change and effective budget management. She led the creation of Hallmark's first collaborative corporate process for IT prioritization and co-founded the Hallmark Women's Network.</p><p>A Kansas City resident, Allman earned a bachelor's degree in mechanical engineering at WashU in 1991, a bachelor's degree in physics from William Jewell College, and an MBA from Rockhurst University.<br/><a href="/alumni/programs-events/alumni-achievement-awards/Pages/2017.aspx" style="background-color: #ffffff;">>> Read more and watch video.</a></p><p> <br/></p><h3>Brian Hoelscher</h3><p>Leveraging a 30-year career with engineering and management experience, Brian Hoelscher has led the Metropolitan Sewer District (MSD) since 2013. As executive director and CEO, he is responsible to execute more than $3 billion in capital improvements while servicing 1.3 million people. Hoelscher has been a steadfast leader, notably driving MSD's Capital Improvement Diversity program. His advocacy for minority- owned and women-owned companies has resulted in more than $43 million in completed construction projects. </p><p>Hoelscher earned a bachelor's degree in civil engineering from WashU in 1985 while breaking records on the baseball and football teams. <br/><a href="/alumni/programs-events/alumni-achievement-awards/Pages/2017.aspx" style="background-color: #ffffff; outline: 0px;">>> Read more and watch video.</a><br/></p><p> <br/></p><h3>Raghu Sugavanam</h3><p>In 2014 Raghu Sugavanam co-founded Interpreta, an analytics company that updates, interprets and synchronizes clinical and genomics data by creating a personalized health-care roadmap. These real-time insights provide physicians, care managers and clients with the patient specific information needed for quality improvement, prioritization, population management and precision medicine. Within two years of its founding, Centene Corp. acquired 19 percent of Interpreta.</p><p>A resident of San Diego, Sugavanam earned a bachelor's degree in chemical engineering from the Indian Institute of Technology, a master's in chemical engineering from WashU in 1978 and a master's in computer science from Rutgers University.<br/><a href="/alumni/programs-events/alumni-achievement-awards/Pages/2017.aspx" style="background-color: #ffffff; outline: 0px;">>> Read more and watch video.</a><br/></p><p> <br/></p><h3>Peter Young</h3><p>Peter Young's first position was with Allied-Signal Aerospace as a materials and process engineer. In 1983, Young returned to Hong Kong and founded Chemcentral Group, which provides raw materials and equipment for manufacturers in China. Chemcentral Group has grown into an international trade and investment organization with branches specializing in paper industry products, chemical materials, real estate, ecotourism and recreation. With offices worldwide, Young's companies have remained the largest supplier of coating clay in China since 1984. Young holds stock in PURE brand whisky, brandy and scotch and investments in a hotel and spa property, the Lihua International Hotel & Spa, in Longjing, China.</p><p>A resident of Hong Kong, Young earned a bachelor's degree in chemical engineering from WashU in 1980. He also attended the University of Southern California for graduate work in plastics and engineering.<br/><a href="/alumni/programs-events/alumni-achievement-awards/Pages/2017.aspx" style="background-color: #ffffff; outline: 0px;">>> Read more and watch video.</a><br/></p><p> </p><p> </p><h3>Engineering Entrepreneurship Award, Michael Lefenfeld <br/></h3><p>Michael Lefenfeld is co-founder and chief executive officer of New York City-based SiGNa Chemistry, a global manufacturer of highly-active, environmentally friendly chemicals. SiGNa's products are used to improve production processes in the energy recovery, petrochemical refining and chemical manufacturing industries. His work has led to safer industrial environments, better medical technologies and more effective, affordable energy solutions. Prior to SiGNa, Lefenfeld developed and commercialized several new technologies, launching and selling three companies by age 30. Lefenfeld holds more than 50 patents in medical devices, controlled release, electronics, chemical reactivity and information technology.</p><p>After earning a bachelor's degree in chemical engineering at WashU in 2002, Lefenfeld, a resident of New York City, earned a master's in chemistry at Columbia University and an executive education certificate at Stanford University's Graduate School of Business.<br/><a href="/alumni/programs-events/alumni-achievement-awards/Pages/2017.aspx" style="background-color: #ffffff; outline: 0px;">>> Read more and watch video.</a><br/></p><p> <br/></p><h3>Dean's Award, David & Carol Gast</h3><p>As undergraduates and St. Louis natives, David and Carol Gast met at a football game. David made a business of installing sound systems around campus, including the first system in Graham Chapel. David continued his entrepreneurial streak after a stint in the U.S. Army, where then-Lieutenant Gast was an instructor in the Guided Missile School. He later joined the electrical and mechanical industrial equipment sales firm Carl F. Gast Co., which his parents had founded in 1935. After starting as a salesman, he became CEO. Carol later became the bookkeeper for the firm. Since Gast's retirement in 2005, the company is managed by third-generation owners.</p><p>The Gasts have generously supported annual engineering scholarships and the Gast Window in Preston M. Green Hall and have made an estate commitment to endow a professorship in the School of Engineering & Applied Science. </p><p>David earned bachelor's degrees in physics and in electrical engineering in 1953 and a master's in electrical engineering in 1954 from WashU. Carol was in the Liberal Arts class of 1956.<br/><a href="/alumni/programs-events/alumni-achievement-awards/Pages/2017.aspx" style="background-color: #ffffff; outline: 0px;">>> Read more and watch video.</a><br/></p><p> <br/> </p> <span> <div class="cstm-section"><h3>Awardee Videos<br/></h3><div><ul><li> <a class="nothumblink button" href="https://www.youtube.com/watch?v=VxiOlVnJioQ">Libby Allman</a><br/></li><li> <a class="nothumblink button" href="https://www.youtube.com/watch?v=8VXLBnkUb4g">Brian Hoelscher</a><br/></li><li> <a class="nothumblink button" href="https://www.youtube.com/watch?v=dJxU3BklvbE&index=4&list=PLysD4ocsusqpH0TyzSJtnyaP4XRYfR-eM">Raghu Sugavanam</a><br/></li><li> <a class="nothumblink button" href="https://www.youtube.com/watch?v=hEnvRRf6xXs">Peter Young</a><br/></li><li> <a class="nothumblink button" href="https://www.youtube.com/watch?v=0_mZOwsxrGs&t=2s">Michael Lefenfeld</a><br/></li><li> <a class="nothumblink button" href="https://www.youtube.com/watch?v=f8P5KvXihA8">David & Carol Gast</a><br/></li></ul></div></div></span>L to R: Michael Lefenfeld, David Gast, Peter Young, Libby Allman, Carol Gast, Raghu Sugavanam, Brian Hoelscher2017-04-05T05:00:00ZAlumni, ranging from civil engineers to aerospace engineers to entrepreneurs were among those who received Alumni Achievement Awards.