Social Media Tips and Techniques

Seminar: 2.2.12 / CREOL 102 / 3-4pm / Seminar: “Organic VECSELs: Towards Low-Cost UV-Visible Lasers”, Sébastien Chénais

Seminar: “Organic VECSELs: Towards Low-Cost UV-Visible Lasers”, Sébastien Chénais

CREOL 102

Thursday, February 2, 2012 / 3-4pm

Sébastien Chénais
Laser Physics Laboratory, University of Paris 13, 93430 Villetaneuse, France

Abstract:
Vertical External Cavity Surface Emitting Organic Lasers (VECSOLs) are the counterparts of VECSELs with organic solid-state gain materials, i.e. dye-doped polymer thin films or organic semiconductors. They combine the well-known properties of VECSELs (high conversion efficiency, excellent beam quality, power scaling capability, high versatility offered by the open cavity) with the key properties offered by organic thin films : low cost, ease of fabrication (by high-throughput processes such as spin coating, potentially ink-jet printing on large areas), broad emission spectra (typ. 100-nm wide) offering a high potential for wavelength tunability, easy chemical tuning (from near-UV to near-IR), and high gain. With a simple structure consisting of a plane highly-reflective mirror onto which a thin film of Rhodamine-640-doped PMMA layer was spin-cast and a concave output coupler closing the cavity, pumped by the second harmonic of a Nd:YAG laser (532 nm, 7 ns, 10 Hz), we achieved a record conversion efficiency of 60% with a diffraction-limited output at 620 nm. The open cavity allowed us to perform intracavity frequency doubling and obtaining a deep-UV laser continuously tunable from 309 to 322 nm, with 2% efficiency, in a very compact setup (1-cm long). Dynamical numerical simulations based on Statz-DeMars equations revealed that the very high gain cross sections (~10-16 cm²) combined to the short lifetime (~ns) of organics make the device performance highly dependent on cavity length and pump pulse duration. Photobleaching issues which are common to all organic solid-state lasers will be discussed.

For More Information:
Dr. Romain Gaume
gaume @ ucf. edu

TODAY: Seminar: 1.30.12 / CREOL 102 / 11-12 / Seminar: “Some properties of speckle from smooth surfaces”, Joseph W. Goodman

Seminar: “Some Properties of Speckle From Smooth Surfaces”, Joseph W. Goodman

CREOL 102

Monday, January 30, 2012 11:00 AM to 12:00 PM

Joseph W. Goodman

Stanford University

Abstract:
In this talk I will discuss certain symmetries in the Fourier spectrum of speckle from smooth surfaces and the effects these symmetries have on image speckle contrast. The cases examined are bright-field imaging, dark-field imaging, and single-sideband imaging.

Biography:
Joseph W. Goodman received the A.B. Degree in Engineering and Applied Physics from Harvard University in 1958, and the M.S. and Ph.D. degrees in Electrical Engineering from Stanford University in 1960 and 1963, respectively.

From 1958 through 1962, he was a Research Assistant in the Stanford Electronics Laboratories. During 1962 and 1963, he was a post-doctoral Fellow at the Norwegian Defense Research Establishment, under the auspices of the Royal Norwegian Society for Scientific and Industrial Research. He returned to Stanford in 1963 as a Research Associate, a position he held until 1967. In 1967 he was appointed Assistant Professor of Electrical Engineering at Stanford. He was promoted to Associate Professor in 1969 and to Professor in 1972. In 1988 he was appointed Chairman of the Department of Electrical Engineering and named the William E. Ayer Professor of Electrical Engineering. In 1996 he stepped down as Chairman and assumed the position Senior Associate Dean for Faculty and Academic Affairs in the School of Engineering . For the duration of the Summer of 1999, he was the Acting Dean of Engineering. Prof. Goodman assumed Emeritus status on January 1, 2000.

Please click on the link below for more information about Dr. Goodman
http://www-ee.stanford.edu/%7Egoodman/resume.html

For More Information:
Dr. Bahaa E. A. Saleh
Dean & Director, Professor of Optics
besaleh @ creol. ucf. edu

Special Seminar: Dr. A. Mammoto (Cardio)

Seminar: 1.31.12 / CREOL 102 / 11-12pm / Seminar: “Underlying Physics of Biomedical Optical Imaging”, Robert R. Alfano

Seminar: “Underlying Physics of Biomedical Optical Imaging”, Robert R. Alfano

CREOL 102

Tuesday, January 31, 2012 / 11-12pm

Robert R. Alfano

CCNY

Abstract:

This talk will focus on the salient properties of light for imaging and propagation through scattering media. The following will be discussed: salient properties of light, imaging through scattering walls with smart photons, shadowgram gates for imaging, optical mammography and light propagation in dielectric water –like media.

Biography:

Robert R. Alfano, Distinguished Professor of Science and Engineering at The City College of the City University of New York, is a pioneer in the application of light and photonics technology to the study of biological, biomedical and condensed matter systems and a leader in inventing and using novel light sources as well as developing ultrafast laser spectroscopic techniques. His contributions to the field of photonics over the past 30 years of his professional career are documented in over 700 research articles, 108 patents, several edited volumes and conference proceedings, and well as over 10,000 citations. His research achievements include pioneering contributions in discovering new tunable Cr³⁺/Cr⁴⁺ lasers, developing laser spectroscopic and biomedical optical spectroscopy and imaging techniques for noninvasive, pain-free detection and diagnosis of diseases. He has received his Ph.D. in physics from New York University. Received OSA Charles Hard Townes Award in 2008 for supercontinuum discovery and tunable laser development and recently the 2012 SPIEs Britton Chance Biomedical Optics Award .

For More Information:
Dr. Bahaa E. A. Saleh
Dean & Director, Professor of Optics
besaleh @ creol. ucf. edu

Business Finance Seminar - Monday January 30, 2012 - RSVP to 407-847-2452

TODAY: Seminar: 1.26.12 / CREOL 102 / 2-3pm / Seminar: “Modelling Relativistic Quantum Mechanics in Optical Waveguiding Structures”, Alexander Szameit

Seminar: “Modelling Relativistic Quantum Mechanics in Optical Waveguiding Structures”, Alexander Szameit

CREOL 102

Thursday, January 26, 2012 / 2-3pm

Alexander Szameit

University of Jena – Department of Applied Physics

Abstract:

Simulating the evolution of a non-relativistic quantum mechanical particle in a periodic potential by propagating an optical wave packet in arrays of evanescently coupled waveguides has received continuous and increasing attention in recent years. It is thereby a common belief that the use of optical waveguides as a model system for quantum mechanics carries the intrinsic drawback of being limited to non-relativistic phenomena and that the observation of optical analogues of relativistic phenomena requires subwavelength structured media like photonic crystals or metamaterials.

In my presentation we will give an overview on the recent progress of simulating the evolution of relativistic wave packets in a classical optical system. Specific focus is thereby given on (1) planar superlattice waveguide arrays and (2) honeycomb photonic lattices – also called photonic graphen, that allow the classical simulation of the relativistic Dirac equation.

For More Information:

Demetrios Christodoulides
Professor of Optics/ Provost's Research Enhancement Position (PREP)
demetri @ creol. ucf. edu

Crowd Funding Seminar

VERY SPECIAL EVENT COVERING ANDROID TECHNOLOGIES AND SECURITY - Thursday, 2 February 2012 - On the web, at UCF, and in Melbourne ALL AT ONCE!!!!

If you use or are interested in Android technology, you may want to participate in the event described in the attached flyer that is being supported by the UCF Business Incubator in the Central Florida Research Park. You do not have to be a member of either INCOSE or ITEA to attend. You can attend in person or via the web.

Android – A Dive Into an Open Source Operating System for the Mobile Device User

Mr. David Gewirtz will talk about mobile security architecture, emerging privacy and security concerns of Android mobile devices and the security and safety considerations for activities such as tethering, using Wi-Fi hotspots, third-party applications, Bluetooth, emailing files, and connectivity. Presenter: David Gewirtz U.S. Policy Advisor & Computer Scientist.

Presenter Bio: David Gewirtz is an author, U.S. policy advisor, and computer scientist. He is featured in The History Channel special The President's Book of Secrets, and is CBS Interactive's Distinguished Lecturer as well as the host of the ZDNet Government and DIY-IT blogs. David is also director of the U.S. Strategic Perspective Institute, is one of America's foremost cyber-security experts, and a top expert on saving and creating jobs. David is the Cyber-warfare Advisor for the IACSP, a columnist for The Journal of Counterterrorism and Homeland Security, has been a guest commentator for the Nieman Watchdog of the Nieman Foundation for Journalism at Harvard University and is a member of FBI InfraGard and the U.S. Naval Institute. He is also the author of The Flexible Enterprise, the classic book that served as a foundation for today's agile business movement.

To Attend:

In addition to the traditional onsite attendance, this joint meeting will be streamed through the Internet. Please refer to the attached flyer for information to RSVP for onsite attendance or for log-in instructions from a desktop or laptop (non-wireless connection).

Work is SLOWLY Killing You....Get the Facts & React!

Seminar: 1.30.12 / CREOL 102 / 11-12 / Seminar: “Some properties of speckle from smooth surfaces”, Joseph W. Goodman

Seminar: “Some properties of speckle from smooth surfaces”, Joseph W. Goodman

CREOL 102

Monday, January 30, 2012 11:00 AM to 12:00 PM

Joseph W. Goodman

Stanford University

Abstract:
In this talk I will discuss certain symmetries in the Fourier spectrum of speckle from smooth surfaces and the effects these symmetries have on image speckle contrast. The cases examined are bright-field imaging, dark-field imaging, and single-sideband imaging.

Biography:
Joseph W. Goodman received the A.B. Degree in Engineering and Applied Physics from Harvard University in 1958, and the M.S. and Ph.D. degrees in Electrical Engineering from Stanford University in 1960 and 1963, respectively.

From 1958 through 1962, he was a Research Assistant in the Stanford Electronics Laboratories. During 1962 and 1963, he was a post-doctoral Fellow at the Norwegian Defense Research Establishment, under the auspices of the Royal Norwegian Society for Scientific and Industrial Research. He returned to Stanford in 1963 as a Research Associate, a position he held until 1967. In 1967 he was appointed Assistant Professor of Electrical Engineering at Stanford. He was promoted to Associate Professor in 1969 and to Professor in 1972. In 1988 he was appointed Chairman of the Department of Electrical Engineering and named the William E. Ayer Professor of Electrical Engineering. In 1996 he stepped down as Chairman and assumed the position Senior Associate Dean for Faculty and Academic Affairs in the School of Engineering . For the duration of the Summer of 1999, he was the Acting Dean of Engineering. Prof. Goodman assumed Emeritus status on January 1, 2000.

Please click on the link below for more information about Dr. Goodman
http://www-ee.stanford.edu/%7Egoodman/resume.html

For More Information:
Dr. Bahaa E. A. Saleh
Dean & Director, Professor of Optics
besaleh @ creol. ucf. edu

OIDA Workshop: Opportunities and Trends in Optoelectronic Manufacturing

The North American optoelectronics industry has undergone significant changes over the course of the last decade. The escalating end-user demand for bandwidth coupled with the attendant pricing pressures continues to pose significant challenges to the industry. To stay competitive, the industry has addressed this challenge by off-shoring optoelectronic component and board level packaging and assembly. Recently, the US Government has announced a string of initiatives in manufacturing to facilitate development of advanced manufacturing technologies as well as to provide impetus to growth of jobs.

The goal of this one day industry-centric workshop is to determine what manufacturing technologies and business incentives are needed to facilitate manufacturing, and to delineate topics of technology focus in optoelectronics that might be used to address government manufacturing initiatives.

The first part of the workshop will feature talks from experts in the industry (public & private companies), academia, and the financial community discussing their perspectives on optoelectronic manufacturing. This will be followed by presentations from leaders representing agencies such as the Defense Advanced Research Projects Agency (DARPA), Photonics21 (European technology platform for photonics), National Institute for Standards and Technology (NIST) and the National Research Council of Canada discussing their initiatives/programs in optoelectronic manufacturing. There will be a panel session featuring the speakers following this.

The second part of the workshop will feature talks from industry and government experts delivering technology focused presentations of relevance to optoelectronic manufacturing. Topics to be covered range from advanced device design and fabrication technologies to advanced packaging and assembly technologies for next generation photonic devices.

Rock Your Revenues in 2012

SBIR Seminar

TODAY: SID Student Chapter Seminar: 1.17.12 / CREOL 102 / 11-12 / “Fast Switchable Liquid Crystal Cells for Field Sequential Color and 3D Displays”, V

SID Student Chapter Seminar: “Fast Switchable Liquid Crystal Cells for Field Sequential Color and 3D Displays”, Vladimir G. Chigrinov

CREOL 102

Tuesday, January 17, 2012 / 11am-12pm

Vladimir G. Chigrinov

Hong Kong University of Science and Technology, Hong Kong

Abstract:

The response time of liquid crystal displays is still inferior to the existent competing technologies, such as plasma display panels (PDP) or organic light emitted diodes (OLED). The target LC cell response time for a field sequential color (FSC) and 3D displays should be less than 1 ms (240 Hz frame frequency) to provide a high resolution, low power consumption and extended color gamut liquid crystal displays (LCD).

Fast electrooptical modes in nematic LC, such as optically compensated birefringence (OCB), no bias bend (NBB) or stressed splay twist (SST) modes do not seem to be very helpful to meet the new requirements for FSC and 3D display applications. Some hope still exists, when the double cell configurations are used.

One of the candidates for fast switching LC materials is a blue phase. However, these materials still suffer a relatively narrow temperature range, too high applied voltage and a hysteresis in the electrooptical response.

Another candidate is a flexoelectric mode in short pitch cholesteric LCs. The mode shows a high dependence of the response on the LC alignment quality as well flexoelectric LC modules, which are mostly responsible for the high contrast ratio and fast switching time.

Fast switching ferroelectric liquid crystal (FLC) displays (FLCD) is a good candidate for the new generation of field sequential color (FSC) and 3D LCD, which proved to be better in response time, especially deformed helix ferroelectric (DHF) mode and its modifications, which provide a high contrast, and extremely fast switching time for a very low applied voltage.

Biography:

Prof. Chigrinov is a professor in ECE Department, HKUST, Hong Kong. He is an expert in Flat Panel Technology in Russia, recognized by World Technology Evaluation Centre, 1994. He is also a member of Editorial Board of "LIQUID CRYSTAL TODAY", an associate editor of J. SID, and a SID fellow. He has published 4 books, 17 reviews and book chapters, 186 journal papers, 420 conference presentations and 69 patents and patent applications in the field of liquid crystals and displays since 1974. He also gave several short course lectures and tutorials in conferences hold by SPIE and SID. The paper of M.Schadt, K.Schmitt, V.Kozenkov, V.Chigrinov, Surface-induced parallel alignment of liquid crystals by linearly polymerized photopolymers, Jap. J.Appl. Phys. P.I., Vol.31, pp. 2155-2164 (1992) is number 4 among the most heavily-cited and have been influential papers published in JJAP since the first volume (1962) and have been selected from the various fields of applied physics by the JJAP Editorial Board (http://www.ipap.jp/highlights/jjap.html).

For More Information:

SID UCF Student Branch Chair: Jin Yan, jyan @ creol. ucf. edu

Student chapter advisor: Shin-Tson Wu (407-823-4763)

MBA/MS "Just in Time Hiring Event"

Where else can you have direct access to hundreds of the state’s “best and brightest” future business leaders?

You are invited to showcase your organization at the 2012 MBA/MS JUST IN TIME HIRING EVENT, held on Friday, February 17, 2012 from 11 a.m. – 4 p.m. at the University of Central Florida in Orlando. Meet talented graduate business students and alumni from FIU, UCF, UF and NSHMBA and fulfill your organization’s hiring needs. Booth space is available for $475. Interview and information session space available on a first-come basis. Click https://mbafairflorida-cfm.symplicity.com/events/2012 to register for the event. Call Eirini Chaddon at 407-823-2322 or Lonny Butcher at 407-823-2328 for details!

Orange County Tax Abatement Referendum

Seminar: 1.26.12 / CREOL 102 / 2-3pm / Seminar: “Modelling Relativistic Quantum Mechanics in Optical Waveguiding Structures”, Alexander Szameit

Seminar: “Modelling Relativistic Quantum Mechanics in Optical Waveguiding Structures”, Alexander Szameit

CREOL 102

Thursday, January 26, 2012 / 2-3pm

Alexander Szameit

University of Jena – Department of Applied Physics

Abstract:

Simulating the evolution of a non-relativistic quantum mechanical particle in a periodic potential by propagating an optical wave packet in arrays of evanescently coupled waveguides has received continuous and increasing attention in recent years. It is thereby a common belief that the use of optical waveguides as a model system for quantum mechanics carries the intrinsic drawback of being limited to non-relativistic phenomena and that the observation of optical analogues of relativistic phenomena requires subwavelength structured media like photonic crystals or metamaterials.

In my presentation we will give an overview on the recent progress of simulating the evolution of relativistic wave packets in a classical optical system. Specific focus is thereby given on (1) planar superlattice waveguide arrays and (2) honeycomb photonic lattices – also called photonic graphen, that allow the classical simulation of the relativistic Dirac equation.

For More Information:

Demetrios Christodoulides
Professor of Optics/ Provost's Research Enhancement Position (PREP)
demetri @ creol. ucf. edu

Entrepreneur Open House

TODAY: Seminar: 1.11.12 / CREOL 102 / 2-3pm / “Nanoporous Silica as Photonic Nanocomposite”, Igor Sokolov

Seminar: “Nanoporous Silica as Photonic Nanocomposite”, Igor Sokolov

CREOL 102

Wednesday, January 11, 2012 / 2-3pm

Igor Sokolov

Department of Physics, Department of Chemistry and Biomolecular Science,

Nanoengineering and Biotechnology Laboratories Center (NABLAB),

Clarkson University

Abstract:

Nanoporous (also called mesoporous) silica is a rich class of self-assembled nanocomposite materials with a well-organized uniform pore structure. When optically active molecules are physically encapsulated in the pores, it creates a material with rather non-trivial photonic properties, or “photonic nanocomposite” for short.

In this talk, I describe the basic principles of the synthesis of these materials to demonstrate the reach family of obtained shapes. The synthesis can be tuned to make a large variety of shapes, from films to particles of complex topology. The particle size can be made as small as 3 nm and as big as thousands of microns. This material can have rather non-trivial photonic properties. For example, nanoporous silica particles can have unusually high (“ultrabright”) fluorescence, abnormally large Stock’s shift, rather complex spectra, etc. For comparison, nanoparticles of this material can be substantially brighter than quantum dots (compared to water dispersible quantum dots of the same size). The described material allows embedding a broad family of dyes and other compounds due to the simple physical nature of encapsulation. It allows creating “smart” photonic composite, the material that changes its optical properties depending on the external stimuli. Finally, I will discuss the very prospective biomedical applications of the nanoporous silica particles.

Biography:

Sokolov received his undergraduate training at St. Petersburg State University, Russia (B.S., 1984) and his graduate training in the Russian Bureau of Standards (Russian NIST), Ph.D. at 1991. After his postdoctoral training in the University of Toronto, he joined the faculty at Clarkson University in 2000 as an Assistant Professor in Physics. His current positions are Professor of Physics, Professor of Chemistry and Bimolecular Science, NY Center for Advanced Material Processing (CAMP) Professor, and the Director of the Nanoengineering and Biotechnology Laboratories Center (NABLAB).

His research interests are related to the study of photonic and mechanical properties of nano- and bio- composite materials, bio sensors for biology/medicine, and light-energy conversion, etc. His research has been supported by federal and state agencies, industry. The awards include E.L.Ginzton International Fellowship Award from Stanford University, Soros Research Award, Awards from Ministry of Education of Japanese Government, etc. He has 120+ refereed publications (2500+ citations), 29 patents issued and pending, 100+ invited lectures, seminars, conference presentations; participation in 100+ conferences with contributed presentations. He has supervised 15 graduate, and 11 undergraduate students; graduated 11 MS. and Ph.D. students, trained 7 postdocs.

For More Information:

Bahaa E. A. Saleh

Dean, College of Optics and Photonics

besaleh @ creol .ucf. edu

Rock Your Revenue for 2012 Seminar

Seminar: 1.12.12 / CREOL 102 / 2-3pm / Seminar: “Spectral Sensing: Seeing More Than Your Eye Can See”, Jason Eichenholz

Seminar: “Spectral Sensing: Seeing More Than Your Eye Can See”, Jason Eichenholz

CREOL 102

Thursday, January 12, 2012 / 2-3pm

Jason M. Eichenholz Ph. D.

Chief Technology Officer

Ocean Optics, Inc.

Abstract:

Photonics is a driver for technological innovation and is one of the most important key technologies in the 21st century. Spectral sensing, simply described as the measurement of the reflected, transmitted, or emitted spectrum of something is an important aspect of the “photonics toolbox”. Spectral sensing provides tremendous leverage in many new applications such as improved energy efficiency, advanced manufacturing, product authentication, improving health care and prevention and homeland security applications. Often times spectral sensing is utilized in ways not readily apparent or obvious at first glance. This talk will describe the technology breadth and plethora of applications being enabled by today’s spectral sensing products and offer a vision to future applications being enabled by tomorrow’s spectral sensing solutions.

Biography:

Dr. Eichenholz serves a dual role as the CTO of Ocean Optics and as the Divisional Technology Director for Halma’s Health Optics and Photonics Divisions which includes Labsphere, Fiberguide, Ocean Thin Films, Avo Photonics, Keeler, Riester and Volk Optical is responsible for technology scouting and advising for those organizations. As Ocean Optics’ CTO, Dr. Eichenholz is charged with maintaining its technology and product leadership position in the optical sensing and spectroscopy markets. He is responsible for all aspects of internal and external research, as well as new product and applications development activities. He oversees Ocean Optic’s product development roadmaps and product development process. He also developed the new Blue Ocean Grants open innovation program that is funding more 20 external research programs around the world.

Dr. Eichenholz is actively involved in photonics research, product development and the commercialization of photonics technology.

He written and delivered approximately 50 papers and talks at conferences and in refereed journals in the areas of spectral sensing, spectroscopy, fiber optics and solid state, ultrafast, and frequency-agile lasers. He has multiple internal and external research program ongoing in the areas of new spectrometer designs, MEMS devices, upconverting coatings, patterned dichroic thin film coating, oxygen and pH sensors, and multispectral imaging.

Dr. Eichenholz served as the principal investigator for Air Force and DARPA STTR's and SBIR's and holds six US Patents on new types of solid-state lasers, displays and photonic devices.

Dr. Eichenholz is a senior member of SPIE and OSA and has served on multiple leadership and technical committees for those societies. He also served as a board member for the Florida Photonics Cluster and is on the editorial advisory committee for Laser Focus World and SPIE Professional magazines.

For More Information:

Bahaa E. A. Saleh

Dean, College of Optics and Photonics

besaleh @ creol. ucf. edu

Constant Contact Email Marketing Seminar - Kissimmee Incubator - January 31, 2012

SID Student Chapter Seminar: 1.17.12 / CREOL 102 / 11-12 / “Fast Switchable Liquid Crystal Cells for Field Sequential Color and 3D Displays”, Vladimir

SID Student Chapter Seminar: “Fast Switchable Liquid Crystal Cells for Field Sequential Color and 3D Displays”, Vladimir G. Chigrinov

CREOL 102

Tuesday, January 17, 2012 / 11am-12pm

Vladimir G. Chigrinov

Hong Kong University of Science and Technology, Hong Kong

Abstract:

The response time of liquid crystal displays is still inferior to the existent competing technologies, such as plasma display panels (PDP) or organic light emitted diodes (OLED). The target LC cell response time for a field sequential color (FSC) and 3D displays should be less than 1 ms (240 Hz frame frequency) to provide a high resolution, low power consumption and extended color gamut liquid crystal displays (LCD).

Fast electrooptical modes in nematic LC, such as optically compensated birefringence (OCB), no bias bend (NBB) or stressed splay twist (SST) modes do not seem to be very helpful to meet the new requirements for FSC and 3D display applications. Some hope still exists, when the double cell configurations are used.

One of the candidates for fast switching LC materials is a blue phase. However, these materials still suffer a relatively narrow temperature range, too high applied voltage and a hysteresis in the electrooptical response.

Another candidate is a flexoelectric mode in short pitch cholesteric LCs. The mode shows a high dependence of the response on the LC alignment quality as well flexoelectric LC modules, which are mostly responsible for the high contrast ratio and fast switching time.

Fast switching ferroelectric liquid crystal (FLC) displays (FLCD) is a good candidate for the new generation of field sequential color (FSC) and 3D LCD, which proved to be better in response time, especially deformed helix ferroelectric (DHF) mode and its modifications, which provide a high contrast, and extremely fast switching time for a very low applied voltage.

Biography:

Prof. Chigrinov is a professor in ECE Department, HKUST, Hong Kong. He is an expert in Flat Panel Technology in Russia, recognized by World Technology Evaluation Centre, 1994. He is also a member of Editorial Board of "LIQUID CRYSTAL TODAY", an associate editor of J. SID, and a SID fellow. He has published 4 books, 17 reviews and book chapters, 186 journal papers, 420 conference presentations and 69 patents and patent applications in the field of liquid crystals and displays since 1974. He also gave several short course lectures and tutorials in conferences hold by SPIE and SID. The paper of M.Schadt, K.Schmitt, V.Kozenkov, V.Chigrinov, Surface-induced parallel alignment of liquid crystals by linearly polymerized photopolymers, Jap. J.Appl. Phys. P.I., Vol.31, pp. 2155-2164 (1992) is number 4 among the most heavily-cited and have been influential papers published in JJAP since the first volume (1962) and have been selected from the various fields of applied physics by the JJAP Editorial Board (http://www.ipap.jp/highlights/jjap.html).

For More Information:

SID UCF Student Branch Chair: Jin Yan, jyan @ creol. ucf. edu

Student chapter advisor: Shin-Tson Wu (407-823-4763)

Seminar: 1.11.12 / CREOL 102 / 2-3pm / “Nanoporous Silica as Photonic Nanocomposite”, Igor Sokolov

Seminar: “Nanoporous Silica as Photonic Nanocomposite”, Igor Sokolov

CREOL 102

Wednesday, January 11, 2012 / 2-3pm

Igor Sokolov

Department of Physics, Department of Chemistry and Biomolecular Science,

Nanoengineering and Biotechnology Laboratories Center (NABLAB),

Clarkson University

Abstract:

Nanoporous (also called mesoporous) silica is a rich class of self-assembled nanocomposite materials with a well-organized uniform pore structure. When optically active molecules are physically encapsulated in the pores, it creates a material with rather non-trivial photonic properties, or “photonic nanocomposite” for short.

In this talk, I describe the basic principles of the synthesis of these materials to demonstrate the reach family of obtained shapes. The synthesis can be tuned to make a large variety of shapes, from films to particles of complex topology. The particle size can be made as small as 3 nm and as big as thousands of microns. This material can have rather non-trivial photonic properties. For example, nanoporous silica particles can have unusually high (“ultrabright”) fluorescence, abnormally large Stock’s shift, rather complex spectra, etc. For comparison, nanoparticles of this material can be substantially brighter than quantum dots (compared to water dispersible quantum dots of the same size). The described material allows embedding a broad family of dyes and other compounds due to the simple physical nature of encapsulation. It allows creating “smart” photonic composite, the material that changes its optical properties depending on the external stimuli. Finally, I will discuss the very prospective biomedical applications of the nanoporous silica particles.

Biography:

Sokolov received his undergraduate training at St. Petersburg State University, Russia (B.S., 1984) and his graduate training in the Russian Bureau of Standards (Russian NIST), Ph.D. at 1991. After his postdoctoral training in the University of Toronto, he joined the faculty at Clarkson University in 2000 as an Assistant Professor in Physics. His current positions are Professor of Physics, Professor of Chemistry and Bimolecular Science, NY Center for Advanced Material Processing (CAMP) Professor, and the Director of the Nanoengineering and Biotechnology Laboratories Center (NABLAB).

His research interests are related to the study of photonic and mechanical properties of nano- and bio- composite materials, bio sensors for biology/medicine, and light-energy conversion, etc. His research has been supported by federal and state agencies, industry. The awards include E.L.Ginzton International Fellowship Award from Stanford University, Soros Research Award, Awards from Ministry of Education of Japanese Government, etc. He has 120+ refereed publications (2500+ citations), 29 patents issued and pending, 100+ invited lectures, seminars, conference presentations; participation in 100+ conferences with contributed presentations. He has supervised 15 graduate, and 11 undergraduate students; graduated 11 MS. and Ph.D. students, trained 7 postdocs.

For More Information:

Bahaa E. A. Saleh

Dean, College of Optics and Photonics

besaleh@creol.ucf.edu