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检索条件"任意字段=Conference on Solid State Sensor Arrays - Development and Applications"

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High sensitivity (25 μm pitch) microbolometer FPAs

High sensitivity (25 μm pitch) microbolometer FPAs

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conference on Materials for Infrared Detectors

作者： Murphy, D Ray, M Wyles, R Asbrock, J Lum, N Kennedy, A Wyles, J Hewitt, C Graham, G Horikiri, T Anderson, J Bradley, D Chin, R Kostrzewa, T Raytheon Infrared Operat Lexington MA 02421 USA

ISBN: (纸本)0819441686

Raytheon Infrared Operations (RIO) has achieved a significant technical breakthrough in uncooled FPAs by reducing the pixel size by a factor of two while maintaining state-of-the-art sensitivity. Raytheon has produced high-quality 320 x 240 microbolometer FPAs with 25 mum pitch pixels. The 320 x 240 FPAs have a sensitivity that is comparable to microbolometer FPAs with 50 mum pixels. The average NETD value for these FPAs is about 35 mK with an f/1 aperture and operating at 30 Hz frame rates. Good pixel operability and excellent image quality have been demonstrated. Pixel operability is greater than 99% on some FPAs, and uncorrected responsivity nonuniformity is less than 4% (sigma/mean). The microbolometer detectors also have a relatively fast thermal time constant of approximately 10 msec. This state-of-the-art performance has been achieved as a result of an advanced micromachining fabrication process. The process allows maximization of both the thermal isolation and the optical fill-factor. The reduction in pixel size offers several potential benefits for IR systems. For a given system resolution (IFOV) requirement, the 25 mum pixels allow a factor of two reduction in both the focal length and aperture size of the sensor optics. The pixel size reduction facilitates a significant FPA cost reduction since the number of die printed on a wafer can be increased. The pixel size reduction has enabled the development of a large-format 640 x 512 FPA array applicable to wide-field-of-view, long range surveillance and targeting missions, and a 160 x 128 array where applications for miniaturization and temperature invariance are required as well as low cost and low power.

关键词： Staring arrays Microbolometers sensors Readout integrated circuits Resistance Bolometers Interfaces Thermography Semiconducting wafers Micromachining

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Toward the analysis of mitochondria isolated from leukemic cells with electrochemically instrumented microwell arrays

Toward the analysis of mitochondria isolated from leukemic c...

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International conference on solid state sensors and Actuators (TRANSDUCERS)

作者： G. Lemercier F. Sekli-Belaïdi V. S. Vajrala E. Descamps N. Sojic S. Arbault J. E. Sarry P. Temple-Boyer J. Launay LAAS-CNRS Toulouse FRANCE CRCT-INSERM Toulouse FRANCE ISM-CNRS Bordeaux FRANCE

ISBN: (纸本)9781538627334

This work deals with the development of electrochemical transducers for the analysis of the metabolic status of mitochondria isolated from leukemic cells. It proposes the use of ring nanoelectrodes (RNE) integrated into microwell arrays for the simultaneous monitoring of the oxygen (O 2 ) consumption and the hydrogen peroxide (H 2 O 2 ) production. The sensor enabled the real-time recording of the oxygen consumption of approximately 10,000 isolated mitochondria. Solutions are now proposed to detect H 2 O 2 production and to reduce the number of mitochondria under test, targeting the single mitochondrion analysis.

关键词： Surface treatment Microscopy Platinum Optical character recognition software Electrodes Indium tin oxide Semiconductor device measurement

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Ordered arrays of InGaN/GaN dot-in-a-wire nanostructures as single photon emitters 10

Ordered arrays of InGaN/GaN dot-in-a-wire nanostructures as ...

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conference on Gallium Nitride Materials and Devices X

作者： Lazic, Snezana Chernysheva, Ekaterina Gacevic, Zarko Garcia-Lepetit, Noemi van der Meulen, Herko P. Mueller, Marcus Bertram, Frank Veit, Peter Christen, Juergen Torres-Pardo, Almudena Gonzalez Calbet, Jose M. Calleja, Enrique Calleja, Jose M. Univ Autonoma Madrid Inst Nicolas Cabrera Dept Fis Mat E-28049 Madrid Spain Univ Autonoma Madrid IFIMAC E-28049 Madrid Spain Univ Politecn Madrid ISOM DIE E-28040 Madrid Spain Univ Magdeburg Inst Phys Expt D-39106 Magdeburg Germany Univ Complutense Madrid Ctr Nacl Microscopia Elect E-28040 Madrid Spain

ISBN: (纸本)9781628414530

The realization of reliable single photon emitters operating at high temperature and located at predetermined positions still presents a major challenge for the development of solid-state systems for quantum light applications. We demonstrate single-photon emission from two-dimensional ordered arrays of GaN nanowires containing InGaN nanodisks. The structures were fabricated by molecular beam epitaxy on (0001) GaN-on-sapphire templates patterned with nanohole masks prepared by colloidal lithography. Low-temperature cathodoluminescence measurements reveal the spatial distribution of light emitted from a single nanowire heterostructure. The emission originating from the topmost part of the InGaN regions covers the blue-to-green spectral range and shows intense and narrow quantum dot-like photoluminescence lines. These lines exhibit an average linear polarization ratio of 92%. Photon correlation measurements show photon antibunching with a g(2)(0) values well below the 0.5 threshold for single photon emission. The antibunching rate increases linearly with the optical excitation power, extrapolating to the exciton decay rate of similar to 1 ns(-1) at vanishing pump power. This value is comparable with the exciton lifetime measured by time-resolved photoluminescence. Fast and efficient single photon emitters with controlled spatial position and strong linear polarization are an important step towards high-speed on-chip quantum information management.

关键词： GaN/InGaN nanowire-quantum dots single photon source polarized emission

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FBG based brush length sensors for onboard measurement systems

FBG based brush length sensors for onboard measurement syste...

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conference on Systems of Signals Generating and Processing in the Field of on Board Communications

作者： Kuznetsov, Artem A. Nureev, Ilnur I. Sakhabutdinov, Airat J. Misbakhov, Rinat Sh Feofilaktov, Sergey, V Kazan Natl Res Tech Univ Dept Radiophoton & Microwave Technol 10 K Marx St Kazan 420111 Russia Kazan State Power Elect Univ 51 Krasnoselskaya St Kazan 420066 Russia IRZ TEK Ltd JSC IRZ 19 Bazisnaya St Izhevsk 426034 Russia

ISBN: (纸本)9781538656235;9781538656228

This article deals with development of new type of onboard measurement system for carbon brush's length (wear) measurements. There are many applications where regular inspection is not feasible because of a number of factors including, for example, time, labor, cost and disruptions due to down time. Thus, there is a need for an on-board system that can monitor the brush's length to calculate it's wear rate, while the component is in operation or without removing of the component from its operational position. We propose a novel method for characterization of carbon brush's length. This method based on the usage of advantages of the multiplicative response of FBGs and FBG arrays: spectral parameters depend on several aspects, such as grating's period, refractive index, it's physical length and so on. We are the first, in our point of view, who proposed to use third parameter for sensing application and prospectively all three parameters for complex measurement: the change of FBG's length is used to measure length of the brush and it's wear rate, grating's central wavelength shift for temperature (due to refractive index change) and mechanical stress (due to grating's period variations) measurements. The results of modelling and experiments are presented.

关键词： onboard measurement system fiber bragg grating carbon brush wear optic sensor fiber bragg grating array multiplicative sensors

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ES4: Body area network: Technology, solutions, and standardization

ES4: Body area network: Technology, solutions, and standardi...

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IEEE International conference on solid-state Circuits (ISSCC)

作者： Hoi-Jun Yoo Alison Burdett KAIST Daejeon South Korea Toumaz Abingdon UK

Recently, wireless protocols related to BAN (Body Area Networks) are under standardization by the IEEE 802.15 (Personal Area Networks, PAN) committee, to enable interoperability of a wide range of applications in the areas of medical support, healthcare monitoring and con sumer wellness electronics. BAN requirements are closely related to PAN or WSN (wireless sensor network) technologies; however a major difference in BAN applications is that human body should be carefully considered not only as a possible communication medium or an obstacle to the signal transport, but also taking into account the possibility of physiological effects resulting from the chosen EM wave fre quency. This Special Evening Topic session will present the current status of Body Area Network standard development, and explore proposed solutions and applications with a strong focus on integrated circuit implementations. As an introduction, the IEEE BAN standard process will be reviewed, including its historical background and current status. Following this, further technical details including MAC and PHY layers and security protocols will be addressed. Integrated circuit solutions for BAN applications will be disclosed, and examples of BAN application requirements, especially for ambulatory patient monitoring, will be discussed.

关键词： Wireless sensor networks Body area networks Wireless communication Security Medical services Protocols Atmospheric modeling

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A Run-time Temperature Monitoring with Adaptive Duty Cycle Control for FPGA applications

A Run-time Temperature Monitoring with Adaptive Duty Cycle C...

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International conference on solid-state and Integrated Circuit Technology

作者： Weizhi Li Wangyong Chen Haifeng Chen Haoyu Zhang Linlin Cai School of Microelectronics Science and Technology Sun Yat-sen University Guangzhou China

ISBN: (数字)9798350361834

ISBN: (纸本)9798350361841

To assist dynamic thermal management in FPGA based prototype system, this paper proposes a run-time temperature monitoring solution utilizing ring oscillators to monitor the temperature on different modules of FPGA projects and construct visual thermal maps of the full chips in HOST. To reduce the thermal overhead of the sensors based on ring oscillators, this paper proposes a feedback-driven adaptive duty cycle control technique and provides an indicator to quantify the cooling performance of this technique. Furthermore, the performance of monitoring system in terms of the thermal overhead, resolution and sensitivity of the configurable sensor network is comprehensively analyzed by experiments.

关键词： Temperature sensors Temperature measurement Ring oscillators Visualization Sensitivity Thermal management sensor systems Thermal analysis Monitoring Field programmable gate arrays

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An energy-efficient ASIC with real-time work-on-demand for wireless body sensor network

An energy-efficient ASIC with real-time work-on-demand for w...

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IEEE conference on Electron Devices and solid-state Circuits

作者： Zhihua Wang Xiaoyu Zhang Xinkai Chen Lingwei Zhang Hanjun Jiang Institute of Microelectronics Tsinghua University Beijing China Department of Electronic Engineering Tsinghua University Beijing China

This paper presents an energy efficient ASIC design with the capability of real-time work-on-demand, targeting on the applications of wireless body sensor network (WBSN), especially on those for medical and heath purposes. Application specific requirements have been reviewed. A novel type of sensor node architecture is proposed with a hybrid of active/passive transceivers. The passive RF receiver with zero standby current gives the WBSN nodes the real capability of work-on-demand which is not allowed in previous architectures. A power management module with an optimized power mode control scheme has also implemented to provide various supply voltages for the sensor nodes, and in addition this module can provide the sensor nodes a flexible power mode control for the purpose of energy saving. An ultra-low-power MCU which supports the proposed architecture has been integrated in the ASIC, which can perform the functions of media access, signal flow control and networking. The proposed architecture has been verified through FPGA experiments, and the ASIC has been designed and fabricated using a standard 0.18 um CMOS process. The designed ASIC occupies a die area of 2 mm times 2.5 mm. The digital core of this ASIC has 72.8 K equivalent gate counts excluding the memories. A typical WBSN sensor node can be built with this ASIC in together with a commercial RF transceiver, the sensor parts and some other components, and our ASIC can serve as the main control part for such a node.

关键词： Energy efficiency Application specific integrated circuits Wireless sensor networks Body sensor networks Transceivers Radio frequency Voltage control Energy management Field programmable gate arrays CMOS process

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Multi-functional phantom model to validate microwave sensors for health monitoring applications 12

Multi-functional phantom model to validate microwave sensors...

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12th European conference on Antennas and Propagation, EuCAP 2018

作者： Velander, Jacob Mohd Shah, Syaiful Redzwan Perez, Mauricio David Asan, Noor Badariah Blokhuis, Taco J. Augustine, Robin Microwaves in Medical Engineering Group Solid State Electronics Department of Engineering Sciences Angstrom Laboratory Uppsala University Uppsala Sweden Traumatology department Maastricht University Medical Center Maastricht Netherlands

ISBN: (纸本)9781785617911

Microwave based biomedical sensors can monitor the changes in the dielectric parameters of materials it interacts with. In the physiological realm, there are many dynamics happening during stages such as, bedridden, medical rehabilitation and physical training. The dynamics involve the change in tissue mass and its construct, which will make variations in their dielectric properties. Thus, microwaves sensors are potential candidates in rehabilitation and can provide feedbacks on physical exercises. To the best of the authors' knowledge, this data is not yet well correlated to diseases or health conditions. To facilitate the development of biomedical microwave sensors, phantoms emulating the temporal variations in dielectric properties of human tissues during medical rehabilitation process are necessary. In this paper a leg phantom model for the development of lower extremity trauma / femur fracture rehabilitation microwave sensor is presented. The load bearing capacity of the extremity is compromised when a patient sustains femur fracture and that can affect his/her fat, muscle or bone density over time. The proposed phantom has the versatility to represent the dielectric property variations representing the time scaled tissue variations during the intermediate stages of rehabilitation. Since the microwave sensors are being developed in 1-5 GHz frequency range, the phantom is also characterized corresponding to the reported literature data in that range. © 2018 Institution of Engineering and *** Rights Reserved.

关键词： Patient rehabilitation

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development of a wireless environmental sensor system and MEMS-based RF circuit components

Development of a wireless environmental sensor system and ME...

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International conference on solid state sensors and Actuators (TRANSDUCERS)

作者： Euisik Yoon Kwang-Seok Yun Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon South Korea

ISBN: (纸本)0780389948

This paper reports a miniaturized environmental sensor system integrated with RF communication module. This system has been developed for on-site monitoring of water pollution by heavy metal ions. The system is composed of an electrochemical sensor, a custom potentiostat module, and an RF module for wireless communication. Also, the authors presented monolithic MEMS VCOs integrated with high-Q MEMS inductors and MEMS transmission lines for low-power wireless transceiver applications. Phase noise of the proposed MEMS VCOs has been improved by more than 7 dBc/Hz compared with their CMOS counterparts at 1MHz offset from center frequencies of 5GHz and 13 GHz, respectively.

关键词： Wireless sensor networks sensor systems Radio frequency Circuits Micromechanical devices Monitoring Water pollution Wireless communication Inductors Transmission lines

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A CMOS Molecular sensor for Personalized Diagnostics Featuring Enzyme-Free Reading and Encoding of Viral Variants at Single-Nucleotide Resolution

A CMOS Molecular Sensor for Personalized Diagnostics Featuri...

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European conference on solid-state Circuits (ESSCIRC)

作者： Marco Saif Fuze Jiang Hangxing Liu Adam Wang Zhikai Huang Yuguo Sheng Dongwon Lee Thomas Burger Hua Wang Integrated Devices Electronics And Systems (IDEAS) Group ETH Zürich Switzerland Integrated Systems Laboratory (IIS) ETH Zürich Switzerland

ISBN: (数字)9798350388138

ISBN: (纸本)9798350388145

This paper introduces a CMOS electrochemical molecular sensor array, specifically designed for personalized diagnostics. For the first time, it facilitates highly sensitive and time-effective detection of viral variants on CMOS at single-nucleotide polymorphism (SNP) resolution and demonstrates on-chip DNA reading and molecular-level digital encoding capabilities. The SARS-CoV-2 RNA and its D614G mutation are used to validate the CMOS molecular sensor performance. The sensor array comprises 4096 three-electrode electrochemical pixels with a pitch size of $36 \times 36 ~ \mu\mathrm{m}^sensor$ using 40 nm CMOS technology. Within each sensor pixel, the array integrates an ultra-compact current input continuous-time sigma-delta ADC (I- $\Sigma \Delta$ ADC) for direct current-to-digital conversion, ensuring robustness against environmental noise and interference during personalized diagnostic applications. Each CMOS sensor pixel consumes only $21.4 \mu\mathrm{W}$.

关键词： Sigma-delta modulation Working environment noise RNA DNA Metals Encoding Robustness System-on-chip sensors sensor arrays

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