JF07-National Copy.Indd

Total Page:16

File Type:pdf, Size:1020Kb

JF07-National Copy.Indd and American literature and language Louis Menand worried that convergent political beliefs among faculty and stu- Science and Sleep on Line dents, whether caused by self-selection or conformist socialization—in combina- tion with the long time commitments re- The University’s Office of News and Public Affairs quired to earn a Ph. D.—might stifle ben- has debuted HarvardScience (http://harvard- eficial “ferment” and “iconoclasm.” science.harvard.edu), a website on scientific, med- For their part, the authors hope their ical, and engineering research—and the people who work will lay the foundation for “serious conduct it—throughout Harvard. The site reports social-scientific scholarship” that could science news, profiles researchers, and follows Har- explain the “social mechanisms and vard people out into the field. There are also links processes that account for the relative to affiliated hospitals and research institutes; a di- liberalism of the faculty.” What are the rectory of science researchers (although links to their labs and home pages may be e≠ects of professors’ politics, they ask, found more readily, in many instances, directly through their departmental and not only on students, but also on “the school listings); and topical indexes.These aids may even prove useful within the Uni- structure of intellectual fields?” To what versity to connect researchers with common interests or emerging queries. extent, they ask, do the “political Separately, Harvard Medical School’s Division of Sleep Medicine (http://sleep. propensities” of “the contemporary pro- med.harvard.edu) has joined with WGBH Interactive, an affiliate of Boston’s PBS fessoriate…both reflect and feed into channel, to create an on-line sleep and health education program, www.- broader social and cultural dynamics?” HealthySleep.hms.harvard.edu. The first unit, on healthy sleep, appears in January, These are questions they hope will be the with interactive content explaining the future “subject of lively—and empirically science of sleep, why it matters, and how informed…debate.” to get it. Coverage of disorders—such as insomnia, apnea, narcolepsy—will fol- low. The timing (just after New Year’s Retooling Eve revels) and the home venue (a re- search university where students seem Tech Transfer barely able to get to bed before sunrise) seem especially apt. When physicist Eric Mazur’s research group created a new material called black silicon one day in 1998, he knew right away patenting.” But with each statement, by mercializing professors’ inventions and in- they were on to something. The material putting his ideas in the public domain, novations, a process known as technology absorbs 50 percent more visible light than Mazur was unknowingly closing o≠ a pos- transfer. The metamorphosis involved regular silicon, making possible uses easy sible patent for Harvard. “When I came out combining two o∞ces and rechristening to imagine—in solar panels, for instance. of my talk, the Los Angeles Times, The Econo- the merged entity the O∞ce of Technology But the material also has unusual capacity mist, Discover magazine—they were all there Development (OTD, http://otd.harvard.- to detect infrared light, giving it potential to interview me,” he recalls. The word was edu), hiring a new director, and systemati- applications in the defense, automotive, out. cally updating Harvard’s intellectual- telecommunications, and electronics in- After the media flurry, OTTL had sec- property policies. dustries (see “A Sponge for Light,” May- ond thoughts, Mazur says. “They came to Mazur has a unique vantage point as June 2002, page 12). me and said, ‘Well, maybe we should do someone hampered by the old o∞ce and Mazur, now Balkanski professor of ap- something.’ But it was too late. We lost the helped by the new one. He has been on the plied physics and professor of physics, re- chance of protecting the basic idea.” Har- Harvard faculty since 1984, but his name members approaching someone in what vard now holds patents to two applica- was on just one patent application prior to was then the University’s O∞ce of Tech- tions of black silicon and continues to 2002; since 2002, his lab has filed a dozen. In nology and Trademark Licensing (OTTL) apply for more, but the University is still 2005, with funding from three venture-capi- about patenting his discovery. The re- paying for that sin of omission; Mazur tal firms, he founded a company called sponse was, “No, this is not interesting.” planned to travel to the U.S. Patent O∞ce SiOnyx that is developing applications for Mazur dropped the idea. A few months in December to defend an application. black silicon and expects to launch its first later, he spoke about black silicon at a Mazur’s experience may stem from one product soon. Now, Mazur’s name appears meeting of the American Physical Society: bad decision, but it is also emblematic of a on a list of OTD “success stories”—recent “I said, ‘It could be used for this. It could be subsequent transformation. During the start-ups spun o≠ from work in University used for that.’ I was freely talking about it, last five years, the University has com- labs—as evidence of a burgeoning entrepre- because”—supposedly—“it wasn’t worth pletely retooled the way it handles com- neurial spirit at Harvard. With OTD’s help, Graphics by Stephen Anderson Harvard Magazine 57 JOHN HARVARD’S JOURNAL Yesterday’s News he is negotiating with “a major established company” that wants to develop another From the pages of the Harvard Alumni Bulletin and Harvard Magazine idea from his lab into a product. The di≠er- ence between the new OTD and the old 1913 The Alumni Bulletin welcomes the 1958 The Harvard Corporation issues OTTL, Mazur says, is “black and white.” founding of the Harvard University Press the go-ahead on the construction of as an “eminently appropriate [way to] Harvard’s eighth undergraduate House, That was the goal. “Harvard has a re- powerfully advance the general cause of Quincy. markable research presence,” says Steven learning.” E. Hyman, a professor of neurobiology 1968 A letter calling for de-escalation who was appointed provost in 2001. “We 1923 President Lowell’s refusal to let of the war in Vietnam, with 4,000 signa- produce an enormous number of impor- the son of a black alumnus live, as other tories representing 54 percent of the tant and highly cited new papers every freshmen must, in the freshman dormi- faculty and 51 percent of Harvard and year. But we had been relatively slow to tories creates a furor in the Bulletin’s let- Radcliffe undergraduates, has been pre- commercialize our discoveries, and as a re- ters section and in the public press. sented to President Lyndon Johnson. sult, many potentially important discover- University Professor Edwin O. Rei- ies…sat on library shelves.…I actually think 1938 After 40 and 13 years, respective- schauer, former ambassador to Japan, that it is part of the mission of a research ly, on the research staff of the Harvard and one of the project organizers, calls it university not only to publish papers, but Observatory, astronomers Annie Jump “a remarkable fact that 54 percent of also to get discoveries out into the world.” Cannon and Cecilia Payne-Gaposchkin the Harvard faculty signed anything.” Hyman assembled a faculty committee receive Corporation appointments. in 2004 to set priorities for changing tech- 1998 In response to student demands, nology transfer at Harvard and mounted a 1943 The presidents of Harvard, Yale, the College replaces one-ply toilet paper search for someone to lead the charge. In and Princeton issue a joint statement in undergraduate residences with the May 2005, Isaac T. Kohlberg became the agreeing to forgo “athletics as usual” for more luxurious two-ply variety. Dean University’s associate provost and chief the duration. Harry R. Lewis explains that a “high-level technology development o∞cer. Kohlberg, committee, called the Harvard College who has an LL.B. and an M.B.A., had held 1953 Students voice disgust when the Toilet Paper Commission, consisting of analogous positions at the Weizmann In- faculty approves new rules that allow the Administrative Board, the Faculty stitute of Science in Israel, New York Uni- women to stay in undergraduate rooms Council, the Committee on House Life, versity, and Tel Aviv University. until 11 p.m. instead of 8 p.m. on Saturday the Committee on College Life, and the At Harvard, Kohlberg integrated the nights, but completely eliminate the visit- Masters of the Houses…met weekly all separate technology-transfer o∞ce at the ing hours of 1 p.m. to 4 p.m. for fall to consider this important issue.” Medical School into a unified operation the rest of the week. that would report to Hyman. (OTTL had reported to the vice president for finance.) He expanded the o∞ce’s sta≠ by 40 percent, to 35 people—about the same size as MIT’s o∞ce—and focused on hiring colleagues who un- derstand science and business and take a proactive approach. (Here, too, Mazur’s story is il- lustrative. He says someone from OTD visits him “every couple of weeks, if not more...constantly trying to connect us to compa- nies to see if there are mutual interests, and I think that’s great.”) Kohlberg has empha- sized formal network- ing, but also the infor- mal interactions that may unearth unrecog- Illustration by Mark Steele Isaac T. Kohlberg nized opportunities, and lead to trust. (He dents at Stanford, so keeps an espresso machine in his o∞ce to the university holds fortify professors and business leaders the patent.) who drop in.) He hopes to involve more But Kohlberg says alumni, too—as faculty mentors, angel in- this is not the mea- vestors, chief executives, or enthusiasts sure that matters.
Recommended publications
  • Guest Speakers
    2011 NES/APS-AAPT Joint Spring Meeting Invited Speakers Banquet Speaker The Make-believe World of Real-world Physics Eric Mazur Balkanski Professor of Physics and Applied Physics and Area Dean of Applied Physics. Harvard University Cambridge, MA That physics describes the real world is a given for physicists. In spite of tireless efforts by instructors to connect physics to the real world, students walk away from physics courses believing physicists live in a world of their own. Are students clueless about the real world? Or are we perhaps deluding ourselves and misleading our students about the real world? APS Talks -1- Taming Light and Electrons with Metamaterials Nader Engheta H. Nedwill Ramsey Professor University of Pennsylvania Department of Electrical and Systems Engineering Philadelphia, Pennsylvania In recent years, in my group we have been working on various aspects of metamaterials and plasmonic nano-optics. We have introduced and been developing the concept of “metatronics”, i.e. metamaterial-inspired optical nanocircuitry, in which the three fields of “electronics”, “photonics” and “magnetics” can be brought together seamlessly under one umbrella – a paradigm which I call the “Unified Paradigm of Metatronics”. In this novel optical circuitry, the nanostructures with specific values of permittivity and permeability may act as the lumped circuit elements such as nanocapacitors, nanoinductors and nanoresistors. Nonlinearity in metatronics can also provide us with novel nonlinear lumped elements. We have investigated the concept of metatronics through extensive analytical and numerical studies, computer simulations, and recently in a set of experiments at the IR wavelengths. We have shown that nanorods made of low- stressed Si3N4 with properly designed cross sectional dimensions indeed function as lumped circuit elements at the IR wavelengths between 8 to 14 microns.
    [Show full text]
  • Physics & Practice Of
    VOLUME 1 MAZUR PRINCIPLES PRINCIPLES & PRACTICE OF PHYSICS & PRACTICE OF Putting Principles First Based on his storied research and teaching, Eric Mazur’s Principles & Practice of Physics builds an understanding of physics that is both thorough and accessible. Unique organization and pedagogy allow students to develop a true conceptual understanding of physics alongside the quantitative skills needed in the course. • New learning architecture: The book is structured to help students learn physics in an organized way that encourages comprehension and reduces distraction. • Physics on a contemporary foundation: Traditional texts delay the introduction of ideas PHYSICS that we now see as unifying and foundational. This text builds physics on those unifying foundations, helping students to develop an understanding that is stronger, deeper, and fundamentally simpler. • Research-based instruction: This text uses a range of research-based instructional techniques to teach physics in the most effective possible manner. The result is a groundbreaking book that puts principles first, thereby making it more accessible to students and easier for instructors to teach. MasteringPhysics® works with the text to create a learning program that enables students to learn both in and out of the classroom. About the Cover Two jets of water collide and mix to form a single swirling wave. The image conveys the elegance and symmetry of physics and how the separate Principles and Practice volumes of this text meld together to teach students the beauty of physics. Please visit us at www.pearsonhighered.com for more information. ISBN-13: 978-0-321-95840-2 To order any of our products, contact our customer service department ISBN-10: 0-321-95840-3 90000 VOL.
    [Show full text]
  • Vitae of Jay X. Tang
    Vitae of Jay X. Tang 1. Name, Position and Academic Department(s) Jay X. Tang, Professor of Physics and Engineering Brown University (he/his/him) Tel: 401 863 2292; Fax: 401 863 2024 E-mail address: [email protected] 2. Home Address (on file with Brown University) 3. Education B. S., July, 1987, Department of Physics, Peking University, Beijing, P. R. China. Ph.D., February 1995, Department of Physics, Brandeis University, Waltham, MA. Thesis topic: Isotropic and cholesteric liquid crystalline phase transitions of filamentous bacteriophage fd. Advisor: Seth Fraden. 4. Professional Appointments Postdoctoral Research Fellow supported by a National Institute of Health (NIH) training grant, Harvard Medical School, July, 1994-September, 1997 Instructor of Medicine, Harvard Medical School, October, 1997-August, 1999 Assistant Professor of Physics, Indiana University, August, 1999-December, 2002 Guest Faculty at the Institute of Theoretical Physics (ITP), University of California-Santa Barbara, Program Title: Complex Fluids, Feb-March, 2002 Assistant Professor of Physics and Engineering, Brown University, July, 2002- June, 2008 Guest Professor, Institute of Physics, Chinese Academy of Sciences, Beijing, PRC, 2005-2008 Associate Professor of Physics and Engineering, Brown University, July, 2008- 2015 Professor of Physics and Engineering, Brown University, July, 2015-present Member, Center for International Collaboration, Institute of Physics (IOP), Chinese Academy of Sciences, Beijing, PRC., 2019-present. Faculty Trainer, Biomedical Engineering (BME) and Molecular Pharmacology and Physiology (MPP) graduate programs, 2010-present. 5. Publication b. Book Chapters 1. Janmey, P. A., Shah, J. V., and Tang, J. X., Complex Network in Cell Biology. In Dynamic networks in physics and biology. G.
    [Show full text]
  • Optical Properties of Solar Cells Based on Zinc(Hydr)Oxide and Its Composite with Graphite Oxide Sensitized by Quantum Dots
    City University of New York (CUNY) CUNY Academic Works All Dissertations, Theses, and Capstone Projects Dissertations, Theses, and Capstone Projects 2-2014 Optical Properties of Solar Cells Based on Zinc(hydr)oxide and its Composite with Graphite oxide Sensitized by Quantum Dots S. M. Zakirul Islam Graduate Center, City University of New York How does access to this work benefit ou?y Let us know! More information about this work at: https://academicworks.cuny.edu/gc_etds/54 Discover additional works at: https://academicworks.cuny.edu This work is made publicly available by the City University of New York (CUNY). Contact: [email protected] Optical Properties of Solar Cells Based on Zinc(hydr)oxide and its Composite with Graphite oxide Sensitized by Quantum Dots by S.M. Zakirul Islam A dissertation submitted to the Graduate Faculty in Electrical Engineering in partial fulfillment of the requirements for the degree of Doctor of Philosophy, The City University of New York 2014 © 2014 S.M. Zakirul Islam All Rights Reserved II This manuscript has been read and accepted for the Graduate Faculty of Electrical Engineering in satisfaction of the dissertation requirement for the degree of Doctor of Philosophy. Professor Robert R. Alfano Date Chair of Examining Committee Professor Ardie Walser Date Executive Officer Professor Joseph Birman Professor Ping Pei-Ho Professor Teresa J. Bandosz Professor Sang Woo Seo Dr. Wubao Wang Supervisory Committee The City University of New York III Abstract Optical Properties of Solar Cells Based on Zinc(hydr)oxide and its Composite with Graphite oxide Sensitized by Quantum Dots by S.M.
    [Show full text]
  • Frontiers in Optics 2010/Laser Science XXVI
    Frontiers in Optics 2010/Laser Science XXVI FiO/LS 2010 wrapped up in Rochester after a week of cutting- edge optics and photonics research presentations, powerful networking opportunities, quality educational programming and an exhibit hall featuring leading companies in the field. Headlining the popular Plenary Session and Awards Ceremony were Alain Aspect, speaking on quantum optics; Steven Block, who discussed single molecule biophysics; and award winners Joseph Eberly, Henry Kapteyn and Margaret Murnane. Led by general co-chairs Karl Koch of Corning Inc. and Lukas Novotny of the University of Rochester, FiO/LS 2010 showcased the highest quality optics and photonics research—in many cases merging multiple disciplines, including chemistry, biology, quantum mechanics and materials science, to name a few. This year, highlighted research included using LEDs to treat skin cancer, examining energy trends of communications equipment, quantum encryption over longer distances, and improvements to biological and chemical sensors. Select recorded sessions are now available to all OSA members. Members should log in and go to “Recorded Programs” to view available presentations. FiO 2010 also drew together leading laser scientists for one final celebration of LaserFest – the 50th anniversary of the first laser. In honor of the anniversary, the conference’s Industrial Physics Forum brought together speakers to discuss Applications in Laser Technology in areas like biomedicine, environmental technology and metrology. Other special events included the Arthur Ashkin Symposium, commemorating Ashkin's contributions to the understanding and use of light pressure forces on the 40th anniversary of his seminal paper “Acceleration and trapping of particles by radiation pressure,” and the Symposium on Optical Communications, where speakers reviewed the history and physics of optical fiber communication systems, in honor of 2009 Nobel Prize Winner and “Father of Fiber Optics” Charles Kao.
    [Show full text]
  • Nonlinear Optics at the Nanoscale Eric Mazur Presented by Christopher C
    Nonlinear optics at the nanoscale Eric Mazur Presented by Christopher C. Evans 22nd General Congress of the International Commission for Optics Puebla, Mexico, 17 August 2011 Geoff Svacha Rafael Gattass Tobias Voss Limin Tong and also.... Jonathan Aschom Mengyan Shen Iva Maxwell James Carey Brian Tull Dr. Yuan Lu Dr. Richard Schalek Prof. Federico Capasso Prof. Cynthia Friend Prof. Markus Pollnau (Twente) Xuewen Chen (Zhejiang) Zhanghua Han (Zhejiang) Dr. Sailing He (Zhejiang) Liu Liu (Zhejiang) Dr. Jingyi Lou (Zhejiang) Dr. Ray Mariella (LLNL) Prof. Frank Marlow (MPI Mühlheim) Prof. Sven Müller (Göttingen) Prof. Carsten Ronning (Göttingen) Outline Outline • manipulating light at the nanoscale • supercontinuum generation • optical logic gates Manipulating light at the nanoscale Nature, 426, 816 (2003) Manipulating light at the nanoscale 100 µm Manipulating light at the nanoscale d = 260 nm L = 4 mm 50 µm Manipulating light at the nanoscale 2 µm Manipulating light at the nanoscale 20 µm Manipulating light at the nanoscale Manipulating light at the nanoscale Poynting vector profile for 200-nm nanowire Manipulating light at the nanoscale 50 µm Manipulating light at the nanoscale 50 µm Manipulating light at the nanoscale Manipulating light at the nanoscale 100 µm Manipulating light at the nanoscale 100 µm Manipulating light at the nanoscale minimum bending radius: 5.6 µm 100 µm Manipulating light at the nanoscale aerogel 420 nm 420 nm Nanoletters, 5, 259 (2005) Manipulating light at the nanoscale in out out Nanoletters, 5, 259 (2005) Manipulating
    [Show full text]
  • SPRC 2013 Agenda SPRC 2013 Annual Symposium September 16-18, 2013 Li Ka Shing Conference Center, Stanford University
    SPRC 2013 Annual Symposium September 16-18, 2013 Li Ka Shing Conference Center, Stanford University MONDAY, SEPTEMBER 16 8:00 – 8:15 Welcome Remarks Anton Muscatelli, Univ of Glasgow 8:15 – 9:00 Plenary: Black Silicon: From Serendipitous Discovery to Devices Eric Mazur, Harvard University Session 1: Ultrafast Materials Science Faculty Coordinator: Aaron Lindenberg 9 :00 – 9 :30 Turntable Ultrafast Responses in Graphene Feng Wang, UC Berkeley 9:30 – 10:00 Separating Electronic and Structural Phase Transitions in Alex Gray, Stanford University VO2 with THz-Pump X-Ray Probe Spectroscopy Coffee Break 10:00 – 10:30 Session 2: Laser Particle Accelerators Faculty Coordinator: Bob Byer 10:30 – 11:00 Recent Advances in Laser Acceleration of Particles Chan Joshi, UCLA 11:00 – 11:15 Electron Acceleration in a Laser-Driven Dielectric Micro- Edgar Peralta, Stanford Structure 11:15 – 11:45 All Laser-Driven Compton X-ray Light Source Donald Umstadter, Univ of Nebraska 11:45 – 12:00 Beam Control in Microaccelerators Ken Soong, Stanford 12:00 – 12:30 Poster Introductions Lunch & Poster Session 12:30 – 2:00 Session 3: X-Ray Imaging Faculty Coordinator: Bert Hesselink 2:00 – 2:30 Recent Results in Differential Phase Contrast Imaging Rebecca Fahrig, Stanford 2:30 – 2:45 Differential Phase Contrast Imaging for Aviation Security Max Yuen, Stanford Applications 2:45 – 3:15 Structured Illumination and Compressive X-ray David Brady, Duke University Tomography 3:15 – 3:30 Photo Electron X-ray Source Array Yao-Te Cheng, Stanford Coffee Break 3:30 – 4:00 Session
    [Show full text]
  • Femtosecond-Laser Microstructuring of Silicon for Novel Optoelectronic Devices
    Femtosecond-laser Microstructuring of Silicon for Novel Optoelectronic Devices A thesis presented by James Edward Carey III to The Division of Engineering and Applied Sciences in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the subject of Applied Physics Harvard University Cambridge, Massachusetts July 2004 c 2004 by James Edward Carey III All rights reserved. iii Femtosecond-laser Microstructuring of Silicon for Novel Optoelectronic Devices Eric Mazur James E. Carey III Abstract This dissertation comprehensively reviews the properties of femtosecond-laser mi- crostructured silicon and reports on its first application in optoelectronic devices. Irradia- tion of a silicon surface with intense, short laser pulses in an atmosphere of sulfur hexafluo- ride leads to a dramatic change in the surface morphology and optical properties. Following irradiation, the silicon surface is covered with a quasi-ordered array of micrometer-sized, conical structures. In addition, the microstructured surface has near-unity absorptance from the near-ultraviolet (250 nm) to the near-infrared (2500 nm). This spectral range includes below-band gap wavelengths that normally pass through silicon unabsorbed. We thoroughly investigate the effect of experimental parameters on the morphology and chemical composition of microstructured silicon and propose a formation mechanism for the conical microstructures. We also investigate the effect of experimental parameters on the optical and electronic properties of microstructured silicon and speculate on the cause of below-band gap absorption. We find that sulfur incorporation into the silicon surface plays an important role in both the formation of sharp, conical microstructures and the near-unity absorptance at below-band gap wavelengths.
    [Show full text]
  • Motion Matter
    University of Missouri-Rolla Matter Physics Department January 2005 'n Motion A publication for alumni, friends, faculty, and staff of the MSM-UMR Physics Department Schulz Named Fellow of American Physical Society rofessor Michael Schulz was elected in 2004 to Fellowship in the American Physical Society for his “fundamental P experiments on atomic break-up processes.” Each year, no more than 0.5% of the members of the APS are elected to fellowship. Michael joins UMR Physics professors Ron Olson, Don Madison, and Bob DuBois in this honor. Michael was hired as an assistant professor in the fall of 1990 to assume the leadership responsibility for John Park’s accelerator laboratory and the laboratory has flourished under his guidance. During the time he has been here, Michael has averaged five publications a year and he has been responsible for grants totaling $2.2 million. He has given over 123 contributed conference papers, has been invited to present 29 seminars at institutions in 4 countries, and he has given 23 invited talks at national and international meetings. In recent years, he has been invited to speak at every major international meeting for his area of work. This research has led to the training of 8 Ph.D. students and two postdoctoral associates. In the fall of 2003, he was elected by the members of UMR’s Laboratory for Atomic, Optical, and Molecular Research (LAMOR) to serve as the new director of that Laboratory. In addition to his impressive research record, Dr. Schulz is an excellent educator and is able to communicate the exciting developments of his research to undergraduate students in the courses that he teaches.
    [Show full text]
  • Black Silicon Revolutionizes How Light Is Captured and Stored Harvard University
    Black Silicon Revolutionizes How Light Is Captured And Stored Harvard University In 1999 Harvard University physics professor Eric Mazur accidentally created a remarkable new material in his laboratory by subjecting gray silicon to ultra-short bursts of energy from a high-intensity laser. He discovered the surface of the now-blackened silicon was covered by billions of tiny, needle-like spikes of silica only one-hundredth the diameter of a human hair. Mazur and his research team quickly realized this new material, which he named black silicon, had excellent light- absorbing properties. Funding for additional research was provided by the U.S. Army Research Office, National Science Foundation, and the U.S. Department of Energy. Black silicon can absorb 96 to 98 percent of the light that hits it — giving it highly sensitive and unique optical and electronic properties. Black silicon can absorb visible light and infrared radiation (heat) at unprecedented levels. For comparison, normal gray silicon absorbs only about 60 percent of sunlight that strikes its surface. This technology is currently being developed by Massachusetts-based Sionyx, Inc. Possible applications include manufacturing very sensitive and inexpensive photodetectors for high resolution cameras, day/night cameras for security and surveillance, and high-sensitivity detectors and imagers for biotechnology applications. Because it also absorbs heat, black silicon is an excellent detector of clouds, pollution, water vapor and other atmospheric effects that influence climates. Other possible products include disposable chemical/biological sensors and improved thin-screen displays. To see available technologies from research institutions, click here to visit the AUTM Innovation Marketplace. Share your story at autm.net/betterworldproject #betterworldproject.
    [Show full text]
  • Clear Skies Ahead
    # 22 CLEAR SKIES AHEAD CHANGING THE WEATHER AND FIGHTING MALARIA: WHAT THE FUTURE OF LASERS HAS IN STORE FOR US 22 May 2016 PUBLISHER TRUMPF GmbH + Co. KG, Johann-Maus-Strasse 2, 71254 Ditzingen / Germany; www.trumpf.com RESPONSIBLE FOR THE CONTENT Dr.-Ing. E. h. Peter Leibinger EDITOR-IN-CHIEF Athanassios Kaliudis, Phone +49 7156 303 –31559, [email protected] DISTRIBUTION Phone +49 7156 303 – 31559, [email protected], www.trumpf-laser.com/laser-community EDITED BY pr+co GmbH, Stuttgart / Germany; Martin Reinhardt, Florian Burkhardt CONTRIBUTORS Florian Burkhardt, Norbert Hiller, Tina Hofmann, Athanassios Kaliudis, Martin Reinhardt, Julian Stutz, Anton Tsuji PHOTOGRAPHY DanD photography+Video, Erik Jacobs, Angelika Grossmann, Simon Koy DESIGN AND PRODUCTION pr+co GmbH, Stuttgart / Germany; Gernot Walter, Markus Weißenhorn, Martin Reinhardt TRANSLATION Burton van Iersel & Whitney GmbH, Munich / Germany REPRODUCTION Reprotechnik Herzog GmbH, Stuttgart / Germany PRINTED BY frechdruck GmbH, Stuttgart / Germany Cover picture: Masterfile picture: Royalty Free Cover Moro Cira EDITORIAL This issue features a range of laser applications that are at the more unusual end of the spectrum. These examples are meant to inspire and provide food for thought, not to mention entertain! As you’ll discover, these unusual applications are often found in niche segments—and sometimes they’re surprisingly off the wall! Although laser cutting has evolved into a standard process that has inevitably lost a little of its fascinating appeal, it’s also a major money-maker. And this business demands both aspects: standard applications in widespread use and captivating, exotic niche applications. The fact is that novelties emerge from niche environments, so some form of cross- subsidization from mass-market applications to niche products makes sense.
    [Show full text]
  • Three-Dimensional Nanofabrication of Silver Structures In
    Three-dimensional nanofabrication of silver structures in polymer with direct laser writing A dissertation presented by Kevin Lalitchandra Vora to The School of Engineering and Applied Sciences in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the subject of Applied Physics Harvard University Cambridge, Massachusetts February 2014 ©2014 - Kevin Lalitchandra Vora All rights reserved. Dissertation advisor: Professor Eric Mazur Kevin Lalitchandra Vora Three-dimensional nanofabrication of silver structures in polymer with direct laser writing Abstract This dissertation describes methodology that significantly improves the state of femtosecond laser writing of metals. The developments address two major shortcomings: poor material quality, and limited 3D patterning capabilities. In two dimensions, we grow monocrystalline silver prisms through femtosecond laser irradiation. We thus demonstrate the ability to create high quality material (with limited number of domains), unlike published reports of 2D structures composed of nanoparticle aggregates. This development has broader implications beyond metal writing, as it demonstrates a one-step fabrication process to localize bottom-up growth of high quality monocrystalline material on a substrate. In three dimensions, we direct laser write fully disconnected 3D silver structures in a polymer matrix. Since the silver structures are embedded in a stable matrix, they are not required to be self-supported, enabling the one-step fabrication of 3D patterns of 3D metal structures that need-not be connected. We demonstrate sub- 100-nm silver structures. This latter development addresses a broader limitation in fabrication technologies, where 3D patterning of metal structures is difficult. We demonstrate several 3D silver patterns that cannot be obtained through any other fabrication technique known to us.
    [Show full text]