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conference on Next-Generation Spectroscopic Technologies IV

作者： Dickens, Jason E. Vaughn, Mike S. Taylor, Mervin Ponstingl, Mike GlaxoSmithKline 5 Moore Dr Durham Res Triangle Pk NC 27709 USA Custom Sensors & Technol Fenton MO 63026 USA

ISBN: (纸本)9780819486066

A novel compact LED array based light induced fluorescence (LIF) sensor has been developed for real-time in-line monitoring of intrinsic fluorophores in the solid and liquid state. The sensor is essential for on-the-spot, routine, and cost effective real-time analysis. The sensor is designed to provide real-time emission response along with various smart sensing parameters to ensure real-time measurement quality that is required for regulated GMP process monitoring applications. This work describes a LIF sensor tailored for solid-phase fluorometry. Fundamental figures of merit, excitation overexposure and smart sensing features required for modern process monitoring and control are discussed within the context of pharmaceutical solid-phase manufacturing and similar applications.

关键词： Sensing Light Induced Fluorescence (LIF) light emitting diode arrays (LED) LED arrays real-time analytics smart sensors

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development of high transmittance, back-illuminated, silicon-on-sapphire substrates for high quantum efficiency and high resolution avalanche photodiode imaging arrays

Development of high transmittance, back-illuminated, silicon...

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IEEE Photonics conference (PHO)

作者： Stern, Alvin G. AG STERN LLC Newton MA 02467 USA

There is a growing need in medical, scientific and industrial applications for dual-mode, passive and active 2D and 3D LADAR imaging methods. To fill this need, solid state, single-photon sensitive silicon avalanche p... 详细信息

ISBN: (纸本)9781424489398

关键词： Avalanche photodiodes Detectors Optical crosstalk Optical device fabrication Silicon Substrates

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Nanocrystalline SiC metal-semiconductor-metal photodetector with ZnO nanorod arrays for high-temperature applications

Nanocrystalline SiC metal-semiconductor-metal photodetector ...

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International solid-state sensors, Actuators and Microsystems conference

作者： Lien, Wei-Cheng Tsai, Dung-Sheng Chiu, Shu- Hsien Senesky, Debbie G. Maboudian, Roya Pisano, Albert P. He, Jr-Hau Applied Science and Technology Program University of California Berkeley CA 94709 United States Berkeley Sensor and Actuator University of California Berkeley CA 94709 United States Department of Mechanical Engineering University of California Berkeley CA 94709 United States Institute of Photonics and Optoelectronics Department of Electrical Engineering National Taiwan University Taipei 10617 Taiwan

ISBN: (纸本)9781457701573

This work demonstrates a method to develop high temperature metal-semiconductor-metal photodetectors using low-temperature, ion beam assisted deposition of nanocrystalline silicon carbide (SiC) and hydrothermal synthesis of zinc oxide (ZnO) nanorod arrays. Due to incorporation of ZnO nanorod arrays, the photo-to-dark current ratio of Au/nanocrystalline SiC is increased from 4.9 to 13.3 at 25°C and from 4.85 to 7.57 at 200°C. The results, suggest that the ZnO nanorod arrays could serve as an antireflection layers to guide more light into the SiC photodetectors. These preliminary results support the integration of nanocrystalline SiC and ZnO nanorod arrays for use in high temperature photo-detection applications. © 2011 IEEE.

关键词： Photodetectors

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Nanoscale Silicon Ion-Sensitive Field-Effect Transistors for pH sensor and Biosensor applications

Nanoscale Silicon Ion-Sensitive Field-Effect Transistors for...

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IEEE International conference of Electron Devices and solid-state Circuits (EDSSC)

作者： Lee, Jeong-Soo Kim, Sungho Kim, Kihyun Rim, Taiuk Jeong, Yoon-Ha Meyyappan, M.

Increased demand for point-of-care diagnostics has provided a strong motivation for the development of lab-on-a chip systems. The most important part to develop the system is to realize sensing components with high se... 详细信息

ISBN: (纸本)9781457719974

关键词： Ag-AgCl DC characteristics Electrodes Logic gates Noise Optical buffering Semiconductor device measurement Sensitivity Si Si-NW ISFET Si-nanowire ion-sensitive field effect transistor Silicon biosensor application biosensors chemical sensors elemental sem

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Picotesla Magnetic sensors for Low-Frequency applications

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IEEE TRANSACTIONS ON MAGNETICS 2011年第10期47卷 3740-3743页

作者： Liou, S. H. Yin, Xiaolu Russek, Stephen E. Heindl, Ranko Da Silva, F. C. S. Moreland, John Pappas, David P. Yuan, L. Shen, J. Univ Nebraska Dept Phys & Astron Lincoln NE 68588 USA Univ Nebraska Ctr Mat & Nanosci Lincoln NE 68588 USA Natl Inst Stand & Technol Boulder CO 80305 USA Western Digital Corp Fremont CA 94539 USA

We demonstrate a simple low-power, magnetic sensor system suitable for high-sensitivity magnetic-field mapping, based on solid-state magnetic tunnel junction devices with minimum detectable fields in a 100 pT range at room temperature. In this paper, we discuss a method that uses multilayer thin films to improve the performance of the soft ferromagnetic layer in magnetoresistive sensor applications, by reducing the coercivity and/or improving the reversibility. We have used it in the design of our new magnetic sensor. This sensor has a sensitivity as high as 750%/mT. The magnetic sensor only dissipates 1 mW of power while operating under an applied voltage of 1 V.

关键词： Magnetic concentrators magnetic noise magnetic sensor magnetic tunnel junction (MTJ)

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Light-Emitting Diodes: Materials, Devices, and applications for solid state Lighting XV

Light-Emitting Diodes: Materials, Devices, and Applications ...

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Light-Emitting Diodes: Materials, Devices, and applications for solid state Lighting XV

ISBN: (纸本)9780819484918

The proceedings contain 24 papers. The topics discussed include: energy efficient illumination for the biological clock;human preference in tunable solid state lighting;human health and well-being: promises for a bright future from solid-state lighting;improvement in efficiency droop of GaN-based light-emitting diodes by optimization of active regions;randomized micro lens arrays for color mixing;density-activated defect recombination as a possible explanation for the efficiency droop in GaN-based diodes;characteristics of linear position sensor based on bi-cell photodiode;a flexible rugged testbed for passive solar collector development;nitride nanowire structures for LED applications;nanostructure based antireflection coatings for EO/IR sensor applications;luminescent features of novel sol-gel derived lanthanide multi-doped oxyfluoride nano-structured phosphors for white LED;and luminescent ceramics for LED conversion.

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183GHz 13.5mW/pixel CMOS regenerative receiver for mm-wave imaging applications

183GHz 13.5mW/pixel CMOS regenerative receiver for mm-wave i...

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2011 IEEE International solid-state Circuits conference, ISSCC 2011

作者： Tang, Adrian Chang, Mau-Chung Frank University of California Los Angeles CA United States

ISBN: (纸本)9781612843001

Terahertz- and mm-Wave-based imagers have recently gained interest for imaging in security screening and bio-imaging applications [1,2]. For these applications to become practical, the core pixel circuits employed in an imaging array must meet challenging constraints that originate from the system level design and the needs of constructing large array structures on-chip. The most critical of these constraints is that the pixel must consume very low power, as an array will inflate the total power by n2, where n2 is the total number of pixels in a square (n x n) array. Pixel circuit area is the 2nd major constraint, as the single pixel area will be also inflated by n2. This area constraint is critical because the cost-effective pixel array should ideally fit on a wafer to facilitate monolithic fabrication and avoid the need for complicated mechanical assembly of multiple array sections. A third system-level constraint similar to that experienced in CMOS image sensor arrays is the challenge of routing large numbers of analog signals between each pixel in the array and the sampling ADC. © 2011 IEEE.

关键词： Pixels

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An ultra-sensitive nanocomposite pressure sensor patterned in a PDMS diaphragm 16th

An ultra-sensitive nanocomposite pressure sensor patterned i...

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International solid-state sensors, Actuators and Microsystems conference

作者： Liu, Chao-Xuan Choi, Jin-Woo Department of Electrical and Computer Engineering Louisiana State University Baton Rouge LA 70803 United States Center for Advanced Microstructures and Devices Louisiana State University Baton Rouge LA 70806 United States

ISBN: (纸本)9781457701573

This paper introduces an ultra-sensitive pressure sensor with a flexible diaphragm apparatus. Conductive polymer nanocomposite consisting of elastomer poly (dimethylsiloxane) (PDMS) and carbon nanotubes (CNTs) is used as the sensing element utilizing its flexibility and piezoresistivity. Uniform dispersion of carbon nanotubes as nanofillers is obtained within the polymer matrix, and micropatterns of composite are fabricated through a screen printing process which is assisted by a programmable laser ablation. Mechanical and electrical characterizations are conducted on micropatterns. Under differential pressure across the diaphragm, the sensor device is capable of detecting minute change of pressureless than 10 Pascal which is a significant improvement over current sensing capabilities. Provided with further development, this sensing format could yield potential applications in areas where accurate monitoring of air/liquid pressure is desired. © 2011 IEEE.

关键词： Diaphragms

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Locally synthesized metal oxide nanowire-devices and their gas sensing applications

Locally synthesized metal oxide nanowire-devices and their g...

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International solid-state sensors, Actuators and Microsystems conference

作者： Kim, D. Lim, M.A. Yang, D. Li, Z. Park, C.O. Park, I. Department of Mechanical Engineering KI for the NanoCentury KAIST Daejon Korea Republic of Intelligent Infrastructure Laboratory Hewlett Packard Laboratory Palo Alto CA United States Department of Materials Science and Engineering KAIST Daejon Korea Republic of

ISBN: (纸本)9781457701573

Highly efficient and simple process to fabricate ZnO nanowire-based gas sensing devices was developed. ZnO nanowires (NWs) were locally synthesized by hydrothermal method using localized thermal energy, which is generated by microheater arrays integrated in the device. To enhance the sensitivity to hydrogen (H2) gas of ZnO NW-based sensor, the surface of ZnO NWs was modified with Platinum (Pt) nanoparticles via local wet chemical reaction. H2 sensing performances of the intrinsic and Pt-coated ZnO NWs were compared at two operating temperatures (250C and 350C). We found that the sensing device based on ZnO NWs decorated with Pt nanoparticles has higher sensitivity compared with intrinsic ZnO NW sensor. © 2011 IEEE.

关键词： Hydrothermal synthesis

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A 256 pixel pyroelectric linear array with new black coating

A 256 pixel pyroelectric linear array with new black coating

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conference on Infrared Technology and applications XXXVII

作者： Norkus, Volkmar Schossig, Marco Gerlach, Gerald Koehler, Reinhard Tech Univ Dresden Solid State Elect Lab Mommsenstr 13 D-01062 Dresden Germany DIAS Infrared GmbH D-01217 Dresden Germany

ISBN: (纸本)9780819485861

This paper gives a survey of both the design and essential properties of newly developed pyroelectric linear arrays made on the basis of lithium tantalate (LiTaO3). There are up to 256 pixels with a minimum pitch of 50 mu m. The detector is a hybrid arrangement of pyroelectric detector chip and 0.8 mu m CMOS read-out circuit in a hermetic metal housing. Thanks to the development of a new black coating technology the thermal resolution and the homogeneity of the spectral responsivity have been permanently improved. The absorption layer consists of a columnar NiCr thin film. It is deposited using a special GLAD technology in high vacuum. The band absorption coefficient in the wavelength range 1 ... 15 mu m is about 0.9 for a layer with a thickness of about 1 mu m. The NiCr absorption layer has very low thermal mass and high temperature stability. It can be patterned by lift-off technology. The measurement results demonstrate the excellent homogeneity of the spectral responsivity and the improvement of the signal-to-noise ratio of the linear arrays.

关键词： uncooled linear array pyroelectric detector infrared absorber black coating

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