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Conference on Quantum Sensing and Nanophotonic Devices XI

作者： Rutz, F. Kleinow, P. Walther, M. Aidam, R. Bronner, W. Kirste, L. Niemasz, J. Rehm, R. Schmitz, J. Stadelmann, T. Wauro, M. Woerl, A. Sieck, A. Ziegler, J. Fraunhofer Inst Appl Solid State Phys IAF Tullastr 72 D-79108 Freiburg Germany AIM Infrarot Module GmbH D-74072 Heilbronn Germany

ISBN: (纸本)9780819499066

Fraunhofer IAF can look back on many years of expertise in developing high-performance infrared photodetectors. Since pioneering the InAs/GaSb type-ii superlattice detector development, extensive capabilities of epitaxy, process technology, and device characterization of single element detectors and camera arrays for the mid-and longwave infrared (MWIR and LWIR) have been established up to the level of small-scale production. Bispectral MWIR/MWIR and MWIR/LWIR cameras based on type-ii superlattices or HgCdTe are key topics at Fraunhofer IAF. Recently, we started the development of InGaAs-based short-wave infrared (SWIR) photodetectors for low-light-level applications. In this contribution, we report on materials and technology development for SWIR p-i-n and avalanche photodiodes (APDs), covering detector design, epitaxial growth, process technology, and most recent electro-optical characterization results of focal plane arrays as well as single element detectors.

关键词： SWIR InGaAs photodiode APD InAs/GaSb superlattice dual-color MWIR LWIR

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2014 IEEE sensors applications Symposium, SAS 2014 - Proceedings

2014 IEEE Sensors Applications Symposium, SAS 2014 - Proceed...

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2014 9th IEEE sensors applications Symposium, SAS 2014

ISBN: (纸本)9781479921805

The proceedings contain 73 papers. The topics discussed include: wide-slot antenna for breast imaging applications;measurement uncertainties in differential radar applied to breast imaging;contactless determination of gas concentration and pressure based on a low jitter mmWave FMC radar;development of a frequency-shifted feedback fiber laser at 777.5 nm for range sensing applications;2-D vector field visualization of corrosion in a small-bore piping system using bobbin-type integrated hall and GMR sensors arrays;non-destructive evaluation of far-side corrosion around the multi-layered rivet by using the solid-state hall sensor array;modeling, quantification, optimization - energy efficiency in distributed, embedded systems;and energy efficient handling of big data in embedded, wireless sensor networks.

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development of Bi-Spectral InAs/GaSb Type ii Super lattice Image Detectors

Development of Bi-Spectral InAs/GaSb Type II Super lattice I...

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40th Conference on Infrared Technology and applications

作者： Stadelmann, T. Woerl, A. Wauro, M. Daumer, V. Niemasz, J. Luppold, W. Simon, T. Riedel, M. Rehm, R. Walther, M. Fraunhofer Inst Appl Solid State Phys IAF Tullastr 72 D-79108 Freiburg Germany AIM Infrarot Module GmbII D-74072 IIeilbronn Germany

ISBN: (纸本)9781628410075

InAs/GaSb superlattices are characterized by a broken-gap type ii band alignment. Their effective band gap can be engineered to match mid to long wavelength infrared (IR) photon energies. Fraunhofer IAF has developed image detectors for threat warning systems based on this material system that are capable of spatially and temporally coincident detection in two mid-IR wavelength ranges. We review the present status of the processing technology, report continuous improvements achieved in key areas of detector performance, including defect density and noise behavior, and present initial results for statistical characterization of ensembles of detector elements with respect to diode characteristics and noise.

关键词： InAs/GaSb type ii superlattice infrared image sensor

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A Highly Fluorescent Metallosalalen-Based Chiral Cage for Enantioselective Recognition and Sensing

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CHEMISTRY-A EUROPEAN JOURNAL 2014年第21期20卷 6455-6461页

作者： Dong, Jinqiao Zhou, Yanfang Zhang, Fangwei Cui, Yong Shanghai Jiao Tong Univ Sch Chem & Chem Technol Shanghai 200240 Peoples R China Shanghai Jiao Tong Univ State Key Lab Met Matrix Composites Shanghai 200240 Peoples R China

A highly fluorescent coordination cage [Zn8L4I8] has been constructed by treating enantiopure pyridyl-functionalized metallosalalen units (L) with zinc(ii) iodide and characterized by a variety of techniques including microanalysis, thermogravimetric analysis (TGA), circular dichroism (CD) spectroscopy, and single-crystal and powder X-ray diffraction. Strong intermolecular -, CH, and CHI interactions direct packing of the cage molecules to generate a 3D polycage network interconnected by pentahedral cages formed by adjacent pentamers. The cage has an amphiphilic helical cavity decorated with chiral NH functionalities capable of interactions with guest species such as saccharides. The fluorescence of the cage was greatly enhanced by five enantiomeric saccharides in solution, with enantioselectivity factors of 2.480-4.943, and by five enantiomeric amines in the solid state, with enantioselective fluorescence enhancement ratios of 1.30-3.60. This remarkable chiral sensing of both saccharides and amines with impressive enantioselectivity may result from the steric confinement of the cavity as well as its conformational rigidity. It holds great promise for the development of novel chiral cage materials for sensing applications.

关键词： chirality coordination cage fluorescence sensor metal-organic frameworks metallosalalen saccharides

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Growth of ZnCdS single crystals and prospects of their application as nanoporous structures

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SEMICONDUCTOR SCIENCE AND TECHNOLOGY 2014年第12期29卷 125003-125003页

作者： Colibaba, G. V. Monaico, E. V. Goncearenco, E. P. Nedeoglo, D. D. Tiginyanu, I. M. Nielsch, K. Moldova State Univ Kishinev 2009 Moldova Univ Hamburg Inst Appl Phys D-20355 Hamburg Germany Tech Univ Moldova Natl Ctr Mat Study & Testing Kishinev 2004 Moldova

Substrates of wide band-gap ii-VI semiconductor compounds are considered feasible for the fabrication of nanoporous matrices (NM) needed for templated growth of nanowires and nanotubes of solid-state materials promising for applications in various fields. An accessible and cost-effective approach to fabricate NM is based on electrochemical etching (ECE) which, however, depends on the electrical conductivity of the substrates. In this paper, growth of homogeneous ZnxCd1-xS single crystals, with x varying from 0 to 1, is demonstrated and the influence of chemical composition on optical and electrical properties of the crystals is identified. The feasibility of using ZnxCd1-xS alloys with x = 0-0.6 for the growth of nanopore arrays with pore diameter down to 30 nm is shown. The perspectives and limitations of the use of these semiconductor alloys for the fabrication of NM by means of ECE are discussed.

关键词： crystal growth semiconductor substrates ZnCdS solid solutions anodic etching nanotemplates nanoporous structures

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development of Amperometric Glucose Biosensor Based on Prussian Blue Functionlized TiO₂ Nanotube arrays

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SCIENTIFIC REPORTS 2014年第1期4卷 6891-6891页

作者： Gao, Zhi-Da Qu, Yongfang Li, Tongtong Shrestha, Nabeen K. Song, Yan-Yan Northeastern Univ Coll Sci Shenyang 110004 Peoples R China Nanjing Univ Natl Lab Solid State Microstruct Nanjing 210093 Jiangsu Peoples R China Hanyang Univ Dept Chem Seoul 133791 South Korea

Amperometric biosensors consisting of oxidase and peroxidase have attracted great attention because of their wide application. The current work demonstrates a novel approach to construct an enzymatic biosensor based on TiO2 nanotube arrays (TiNTs) as a supporting electrode on which Prussian Blue (PB)-an "artificial enzyme peroxidase" and enzyme glucose oxidase (GOx) have been immobilized. For this, PB nanocrystals are deposited onto the nanotube wall photocatalytically using the intrinsic photocatalytical property of TiO2, and the GOx/AuNPs nanobiocomposites are subsequently immobilized into the nanotubes via the electrodeposition of polymer. The resulting electrode exhibits a fast response, wide linear range, and good stability for glucose sensing. The sensitivity of the sensor is as high as 248 mA M-1 cm(-2), and the detection limit is about 3.2 mu M. These findings demonstrate a promising strategy to integrate enzymes and TiNTs, which could provide an analytical access to a large group of enzymes for bioelectrochemical applications including biosensors and biofuel cells.

关键词： AMPEROMETRIC sensors BIOsensorS OXIDASES PEROXIDASE PRUSSIAN blue

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Copper(ii) oxide nanowire array hydrogen sensor via facile large area contact integration

Copper(II) oxide nanowire array hydrogen sensor via facile l...

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2013 17th International Conference on solid-state sensors, Actuators and Microsystems, TRANSDUCERS and EUROsensorS 2013

作者： Limkrailassiri, K. Kozinda, A. Lin, L. Berkeley Sensor and Actuator Center University of California Berkeley United States

ISBN: (纸本)9781467359818

This paper presents a novel method to achieve large area contact integration for copper(ii) oxide (CuO) nanowire array-based hydrogen gas sensors, which provides a simple solution to the ongoing challenge of harvesting nanostructured materials for gas sensing applications. The method presented herein offers six distinct advantages over previous nanostructured gas sensing technologies: (1) convenient electrical access to as-grown, freestanding nanowire arrays, thereby obviating postgrowth thin-film metallization, (2) lithography-free fabrication, (3) usage of large area nanowire arrays to circumvent low yield of single nanowire sensors, (4) reusability of contacts for batch characterization, (5) compatibility with all free-standing arrays grown on electrically conductive substrates, and (6) rapid response and recovery times. The CuO nanowire array-based gas sensors exhibited 5× to 25× increased resistance during operation, and a 20× improvement in recovery time compared to prior works. © 2013 IEEE.

关键词： Copper oxides

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MiSPiA: Microelectronic Single-Photon 3D Imaging arrays for low-light high-speed Safety and Security applications

MiSPiA: Microelectronic Single-Photon 3D Imaging Arrays for ...

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Conference on Emerging Technologies in Security and Defence;and Quantum Security ii;and Unmanned sensor Systems X

作者： Tosi, Alberto Zappa, Franco Politecn Milan Dip Elettron Informaz & Bioingn I-20133 Milan Italy

ISBN: (纸本)9780819497680

This paper reports the achievements so far attained in the development of high-performance CMOS SPADs for single-photon sensitive 2D imagers, based on photon-counting and 3D ranging cameras. The latters are based on both the direct in-pixel measurement of the Time-of-Flight of each photon bouncing bounce from the scene back to the camera and the "indirect" phase-resolved method to count reflected photons in well-defined time slots, synchronous to the active illumination of the scene. MiSPiA SPADs are the new state-of-the-art among SPADs in CMOS technologies.

关键词： Single Photon Avalanche Diode (SPAD) 3D ranging photon counting Time-of-Flight (TOF)

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development and Prototyping of the DEPFET Active Pixel Detector (June 2013)

Development and Prototyping of the DEPFET Active Pixel Detec...

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3rd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their applications (ANIMMA)

作者： Scheirich, J. Charles Univ Prague Fac Math & Phys Inst Particle & Nucl Phys Prague 18000 Czech Republic

ISBN: (纸本)9781479910465;9781479910472

Active pixel sensor composed of DEPFETs (DEPleted Field Effect Transistors) array has been developed by DEPFET collaboration. The concept of DEPFET was proposed by Kemmer and Lutz in 1987 and today, it was developed into state-of-the-art highly granular, ultra-transparent monolithic pixel detectors for vertex reconstruction at future collider experiments. Excellent signal over noise performance is provided by integration of a MOSFET (Metal Oxide Semiconductor Transistor) in each pixel, which works as the first amplification stage of readout electronics. Thinning technologies make it possible to manufacture DEPFET sensors with thickness of active sensor area 50-75 micrometers. Steering ASICs (Application-Specific Integrated Circuits) as well as test systems were developed to characterize and optimize the DEPFET sensors. The DEPFET detector is being developed as a vertex detector at Belle ii experiment at the electron-positron SuperKEKB collider in Japan and the future International Linear Collider, but the concept of the DEPFET sensor offers also other fields of applications. In this paper the key parameters of the sensor design are presented, together with the individual ASICs. Furthermore, results of the prototypes tested using radioactive source, and laser are shown.

关键词： Front-end electronics for detector readout Detector alignment and calibration methods (lasers, sources, particle-beams) solid state detectors

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Gly-Gly-His Immobilized On Monolayer Modified Back-Side Contact Miniaturized sensors for Complexation of Copper Ions

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ELECTROANALYSIS 2013年第6期25卷 1461-1471页

作者： Wawrzyniak, Urszula E. Ciosek, Patrycja Zaborowski, Michal Liu, Guozhen Gooding, J. Justin Warsaw Univ Technol Fac Chem Dept Microbioanalyt PL-00664 Warsaw Poland Univ New S Wales Sch Chem Sydney NSW 2052 Australia Univ New S Wales Australian Ctr NanoMed Sydney NSW 2052 Australia Inst Electr Mat Technol PL-02668 Warsaw Poland Cent China Normal Univ Coll Chem Minist Educ Key Lab Pesticide & Chem Biol Wuhan 430079 Peoples R China

Miniaturized planar back-side contact transducers (BSC) with chemically modified gold surface have been utilized as electrochemical sensors. The electrodes have been functionalized by sequential immobilization of aryl diazonium salts or alkanethiols and short peptide Gly-Gly-His. The applicability of gold substrates modified with aryl diazonium salts in voltammetric detection of copper(ii) ions in aqueous solutions has been studied. The combination of two fundamental elements of the solid-state electrode, i.e. back-side contact (BSC) gold sensor and self-assembled monolayers, allowed one to obtain reliable miniaturized copper(ii) ion sensors. It can have important future applications in environmental sensing or in implantable biodevices.

关键词： Back-side contact gold electrodes Miniaturized biosensors Gly-Gly-His Copper(ii) ions Aryl diazonium salts Self-assembled monolayers

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