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IEEE Photonics Conference (IPC)

作者： G. Rong X. Wei C. Kang M. Liscidini J. E. Sipe R. L. Mernaugh S. M. Weiss Department of Electrical Engineering and Computer Science Vanderbilt University Nashville TN USA Interdisciplinary Graduate Program in Materials Science Vanderbilt University Nashville TN USA Department of Physics and Institute for Optical Sciences University of Toronto Toronto ONT Canada Department of Biochemistry Vanderbilt University Nashville TN USA

Nanoscale porous silicon waveguides, both on silicon substrates and free-standing membranes, are explored for biosensing applications. Measured detection limits in the nanomolar range are reported for DNA sensing.

关键词： Silicon Biosensors optical waveguides Gratings Biomembranes Resonance DNA Biological materials optical materials optical surface waves

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Mission Results from FORMOSAT-3/COSMIC Constellation System

Mission Results from FORMOSAT-3/COSMIC Constellation System

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AIAA Space 2007 Conference

作者： Fong, Chen-Joe Huang, Cheng-Yung Chu, Vicky Hsiao, Albert Yang, Eddy Yen, Nick Chen, Shao-Shing Hawes, Dean Kuo, Ying-Hwa Liou, Yuei-An Chi, Sen Hsin-Chu 300 Taiwan Orbital Sciences Corporation 21839 Atlantic Blvd Dulles VA 20166 United States University Corporation for Atmospheric Research Boulder CO 80307 United States Chung-Li 320 Taiwan Hsinchu 300 Taiwan Yuan Ze University Chungli 320 Taiwan FORMOSAT-3 Program Office F8 No 9 Prosperity 1st Road AIAA Department of Photonics Institute of Electro-Optical Engineering NCTU Science Development Office F8 No 9 Prosperity 1st Road FORMOSAT-3 Mission Operation Team F8 No 9 Prosperity 1st Road Flight Dynamic Facility FORMOSAT-3 Mission Operation Team F8 No 9 Prosperity 1st Road FORMOSAT-3 Program Office F8 No 9 Prosperity 1st Road Hsin-Chu 300 Taiwan F8 No 9 Prosperity 1st Road FORMOSAT-3 Spacecraft Program MicroStar Product Line Orbital Sciences Corporation 21839 Atlantic Blvd Dulles VA 20166 COSMIC University Corporation for Atmospheric Research Boulder CO 80307 United States Center for Space and Remote Research National Central University 300 Jhongda Rd. Department of Electrical Engineering Yuan Ze University

ISBN: (纸本)1563479079

The FORMOSAT-3/COSMIC spacecraft constellation consisting of six LEO satellites is the world's first operational GPS radio occultation mission. The mission is jointly developed by Taiwan's National Space Organization (NSPO) and United States' UCAR in collaboration with NASA's Jet Propulsion Laboratory and Naval Research Laboratory for three onboard payloads including GPS Occultation Receiver (GOX), Tri-Band Beacon (TBB), and Tiny Ionospheric Photometer (TIP). The FORMOSAT-3/COSMIC mission was launched successfully from Vandenberg on April 15, 2006 into the same orbit plane of the designated 516 km circular parking orbit altitude. All six FORMOSAT-3/COSMIC satellites are maintained in the good state of health except spacecraft flight model no. 2 (FM2) having power shortage and are on their way toward the final constellation of six separate orbit planes with 30-degree separations as planned. Four out of six satellites have reached their final mission orbit of 800 km as of May 2007. The FORMOSAT-3/COSMIC has processed over 1800 good atmospheric sounding profiles per day in average which has over the number of worldwide radiosondes launched per day (∼900 mostly above the land mass). The atmospheric radio soundings data are assimilated into the Numerical Weather Prediction (NWP) models for real-time weather prediction and typhoon/hurricane forecast. The global and nation's weather prediction centers have shown significant positive impact and the forecast result will be also adapted into the nation's disaster warning and relief system once constellation deployment completed by end of year 2007. With the invention of the open loop technique by UCAR, the quality, the accuracy and the lowest penetration altitude of the RO sounding profiles are better than CHAMP data. This paper also describes the mission highlight;the constellation spacecraft system performance summary;the constellation mission operation result;and the mission science results.

关键词： Cosmic rays

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Femtosecond laser ablation of silicon (100) with thermal oxide thin films of varying thickness

Femtosecond laser ablation of silicon (100) with thermal oxi...

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Conference on Lasers and Electro-Optics, CLEO 2006

作者： McDonald, Joel P. Ray, Katherine E. Mistry, Vanita R. Mourou, Gérard Yalisove, Steven M. Center for Ultrafast Optical Science Department of Electrical Engineering University of Michigan Ann Arbor MI 48109-2099 United States Applied Physics Program 2477 Randall Laboratory University of Michigan Ann Arbor MI 48109-1120 United States College of Engineering University of Michigan Ann Arbor MI 48109 United States Department of Materials Science and Engineering 2200 Hayward Street Ann Arbor MI 48109-2136 United States

Femtosecond laser ablation of Silicon (100) with thermal oxide thin films was studied in order to further understand the ablative properties of thin films and to evaluate their influence on the ablation of the substra... 详细信息

ISBN: (纸本)1557528136

关键词： Laser ablation

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O12.6 Fracture and Deformation of Thermal Oxide Films on Si (100) Using a Femtosecond Pulsed Laser

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MRS Online Proceedings Library 2006年第1期875卷 1-6页

作者： Joel P. McDonald Vanita R. Mistry Katherine E. Ray Steven M. Yalisove Applied Physics Program University of Michigan 2477 Randall Laboratory Ann Arbor USA Center for Ultrafast Optical Science University of Michigan Ann Arbor USA College of Engineering University of Michigan Lurie Engineering Center Ann Arbor USA Deparment of Materials Science and Engineering University of Michigan Ann Arbor USA

Femtosecond pulsed laser damage of Silicon (100) with thermal oxide thin films was studied in order to further understand the optical and electrical properties of thin films and to evaluate their influence on the damage of the substrate. The damage threshold as a function of film thickness (2 – 1200 nm) was measured. The damage morphology produced by single laser pulses was also investigated. Two primary morphologies were observed, one in which the oxide film is completely removed, and the other in which the film is delaminated and expanded above the surface producing a bubble feature.

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Ra16.36/Rb16.36 Nanofluidic capillaries produced via femtosecond laser induced delamination of thin thermal oxide films from Si(100) substrates.

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MRS Online Proceedings Library 2006年第1期901卷 1-4页

作者： Joel P. McDonald Vanita R. Mistry Katherine E. Ray Steven M. Yalisove Applied Physics Program University of Michigan Ann Arbor USA Center for Ultrafast Optical Science University of Michigan Ann Arbor USA College of Engineering University of Michigan Lurie Engineering Center Ann Arbor USA Deparment of Materials Science and Engineering University of Michigan Ann Arbor USA

Highly selective and repeatable delamination of thermal oxide films from Si(100) substrates has been performed using single and multiple femtosecond laser pulses forming bubbles or blisters. By overlapping the bubbles laterally, tubes or capillaries can be formed with a range of volumes suitable for nanofluidics. By scanning the sample through the laser using an automated translation stage, patterns of tubes with arbitrary complexity can be formed, while the scan velocity can easily control the volume of the tubes. The production time for capillaries in this fashion is considerably less than with other lithographic techniques, while the proximity of the tubes to the underlying silicon substrate yields the possibility for integrated devices. The mechanism responsible for the delamination will be discussed and the optimal laser and sample translation conditions will be presented which provide the most uniform tubes. Atomic force microscopy and optical microscopy of capillaries with a range of volumes will be presented.

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Sensitive ultrashort pulse chirp measurement

Sensitive ultrashort pulse chirp measurement

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37th Annual Boulder Damage Symposium Proceedings - Laser-Induced Damage in optical Materials: 2005

作者： Bender, Daniel A. Hasselbeck, Michael P. Sheik-Bahae, Mansoor University of New Mexico Department of Physics and Astronomy Optical Science and Engineering Program Albuquerque NM 87131 United States

No abstract available

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Self-limited photo-assisted synthesis of silicon nanocrystals

Self-limited photo-assisted synthesis of silicon nanocrystal...

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2004 MRS Fall Meeting

作者： Chen, C.Y. Kimura, S. Sen, S. Nozaki, S. Ono, H. Uchida, K. Morisaki, H. Department of Electronic Engineering University of Electro-Communications Chofu-Shi Tokyo 182-8585 Japan 21st Century COE Program: Coherent Optical Science University of Electro-Communications Chofu-Shi Tokyo 182-8585 Japan

Anomalous growth of silicon (Si) nanocrystals (NCs) was observed during Raman scattering measurements of nanosilica SiOx (x=0.9) powder with an average diameter of 40 nm. It was found that Si NCs were formed by exposure to the laser beam. This photo-assisted synthesis is similar to the thermal synthesis of Si NCs, which forms Si NCs by thermally decomposing SiOx into Si and SiO2. However, the photo-assisted synthesis is more effective in forming Si NCs than the thermal synthesis. Even one second after irradiation of the nanosilica SiOx powder with laser, Si NCs with an average size of 5 nm were formed. The Si NC size increases with increasing the laser power and exposure time. It is interesting to observe a self-limited size for higher laser power and prolonged exposure. The photo-assisted synthesis of Si NCs is proved to be a promising technique with a wide range of applications in nanotechnology. © 2005 Materials Research Society.

关键词： Nanostructured materials

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Laser cooling in rare earth doped BaY2F8 crystals

Laser cooling in rare earth doped BaY2F8 crystals

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Frontiers in Optics, FiO 2005

作者： Patterson, W.M. Mocofanescu, A. Sheik-Bahae, M. Epstein, R.I. Thiede, J. Bigotta, S. Parisi, D. Toncelli, A. Tonelli, M. Department of Physics and Astronomy Optical Science and Engineering Program University of New Mexico Albuquerque NM 87131 United States Los Alamos National Laboratory Los Alamos NM 87545 United States INFN-Dipartimento di Fisica via Buonarroti 2 56127-Pisa Italy

Laser cooling in thulium- and ytterbium-doped BaY2F8 crystals is observed. We investigate the potential of this crystalline host for all-solid-state cryocooler applications as compared to those based on rare-earth dop... 详细信息

ISBN: (纸本)1557527970

关键词： Laser cooling

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Femtosecond laser ablation of silicon (100) with thermal oxide thin films of varying thickness

Femtosecond laser ablation of silicon (100) with thermal oxi...

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Conference on Lasers and Electro-Optics, CLEO 2005

ISBN: (纸本)1557527709

关键词： Laser ablation

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Ra16.36/Rb16.36 Nanofluidic capillaries produced via femtosecond laser induced delamination of thin thermal oxide films from Si(100) substrates

Ra16.36/Rb16.36 Nanofluidic capillaries produced via femtose...

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2005 MRS Fall Meeting

作者： McDonald, Joel M. Mistry, Vanita R. Ray, Katherine E. Yalisove, Steven M. Applied Physics Program University of Michigan 2477 Randall Laboratory Ann Arbor MI 48109-1120 College of Engineering University of Michigan Lurie Engineering Center 1221 Beal Avenue Ann Arbor MI 48109-2102 Deparment of Materials Science and Engineering University of Michigan 2200 Hayward Ave. Ann Arbor MI 48109 Center for Ultrafast Optical Science University of Michigan 1006 Gerstacker Building 2200 Bonisteel Avenue Ann Arbor MI 48109

ISBN: (纸本)1558998551

Highly selective and repeatable delamination of thermal oxide films from Si(100) substrates has been performed using single and multiple femtosecond laser pulses forming bubbles or blisters. By overlapping the bubbles laterally, tubes or capillaries can be formed with a range of volumes suitable for nanofluidics. By scanning the sample through the laser using an automated translation stage, patterns of tubes with arbitrary complexity can be formed, while the scan velocity can easily control the volume of the tubes. The production time for capillaries in this fashion is considerably less than with other lithographic techniques, while the proximity of the tubes to the underlying silicon substrate yields the possibility for integrated devices. The optimal laser and sample translation conditions will be presented which provide the most uniform tubes. Atomic force microscopy and optical microscopy of capillaries with a range of volumes will also be presented. © 2006 Materials Research Society.

关键词： Capillary tubes

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