Large format and high sensitivity VO x μ-bolometer detectors at SCD

Mizrahi, U.; Bikov, L.; Giladi, A.; Adin, A.; Shiloah, N.; Malkinson, E.; Czyżewski, T.; Seter, D.; Amsterdam, A.; Sinaĭ, Ya. G.; Fraenkel, A.

doi:10.1117/12.719198

Cited by 10 publications

(6 citation statements)

References 5 publications

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“…Therefore, we observe an immediate improvement in sensitivity in going from the drumhead to the trampoline. Our lowest 𝜂 compares favorably to the state-of-the-art in room-temperature bolometry, competing with vanadium oxide resistive bolometers 37,38 ~ 1-10 pW/Hz 1/2 , other resonant microbolometers 32,33 ~20-30 pW/Hz 1/2 , and greatly outperforming graphene hot-electron bolometers 14 ~ 500 pW/Hz 1/2 .…”

Section: Noise-equivalent Power and Response Speedmentioning

confidence: 78%

“…The bandwidth of trampolines varied between 10 kHz to 100 kHz, while the drumheads have bandwidth as high as 1.3 MHz (220 ns response time), a value ~ 120 times greater than the slowest trampoline. Furthermore, the response bandwidth demonstrated by our GNB is over a 1000 times faster than modern micromechanical bolometers 33 , and nearly 100,000 times faster than vanadium oxide resistive bolometers 37,38 .…”

Section: Noise-equivalent Power and Response Speedmentioning

confidence: 82%

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A fast and sensitive room-temperature graphene nanomechanical bolometer

2019

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Bolometers are a powerful means of detecting light. Emerging applications demand that bolometers work at room temperature, while maintaining high speed and sensitivity, properties which are inherently limited by the heat capacity of the detector. To this end, graphene has generated interest, because it has the lowest mass per unit area of any material, while also possessing extreme thermal stability and an unmatched spectral absorbance. Yet, due to its weakly temperature-dependent electrical resistivity, graphene has failed to challenge the state-of-the-art at room temperature. Here, in a departure from conventional bolometry, we use a graphene nanoelectromechanical system to detect light via resonant sensing. In our approach, absorbed light heats and thermally tensions a suspended graphene resonator, thereby shifting its resonant frequency. Using the resonant frequency as a readout for photodetection, we achieve a room-temperature noise-equivalent power (2 pW Hz−1/2) and bandwidth (from 10 kHz up to 1.3 MHz), challenging the state-of-the-art.

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Section: Noise-equivalent Power and Response Speedmentioning

confidence: 78%

Section: Noise-equivalent Power and Response Speedmentioning

confidence: 82%

A fast and sensitive room-temperature graphene nanomechanical bolometer

2019

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“…It closely follows the successful framework of the previous designs maintaining the "full bridge" analog concept (3) . The new capabilities of the 0.18µm process support an internal compensation mechanism and a more sophisticated interface management unit.…”

Section: Roic Architecture and Performancementioning

confidence: 94%

New developments in SCD's 17-μm VOx μ-bolometer product line

et al. 2010

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Last year we have introduced the development program of SCD's 17µm pitch VGA VO x µ-Bolometer detector (1) . Due to the overall size, weight and power advantages the 17µm pitch is currently being considered for the next generation systems such as thermal weapon sights (TWS), driver vision enhancers (DVE) and digitally fused goggles (DENVG). In the first part of this paper we will discuss in detail the performance of this detector. Specifically, we will elaborate on the radiometric results, ROIC performance and operability. Detailed measurements for a wide temperature range will be presented as well.In the second part, we will describe some new capabilities and features that are enabled by the advanced 0.18um VLSI technology. These features will be embedded in new products that are currently under development.

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“…All these features were manifested in the first product BIRD384 [1][2][3] . In this paper we introduce BIRD640, which is a high-sensitivity (50 mK @ F/1, 60Hz) VGA format detector with 25 µm pitch.…”

Section: Introductionmentioning

confidence: 99%

BIRD640: SCD's high sensitivity VGA VO x μ-bolometer detector

et al. 2007

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In this paper we report preliminary data of BIRD640, which is a high-sensitivity (50 mK @ F/1, 60Hz) VGA format detector with 25 µm pitch. This high performance is achieved by utilizing an improved pixel design. The product is architecturally compatible to BIRD384 and contains SCD's proprietary unique features (e.g. "Power-Save", Ambient drift compensation, etc.). The ROIC architecture follows the framework of the previous designs. It consists of an internal timing machine with a single clock that facilitates the system interface. Extensive effort was invested in reducing the detector and system power dissipation. The ROIC supports special "low power" modes, where considerable power is saved with only minor performance degradation. With its superior temporal sensitivity, long-term stability and operational flexibility BIRD640 serves as an ideal candidate for high end and high resolution uncooled VGA systems, particularly hand-held applications.

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Large format and high sensitivity VO x μ-bolometer detectors at SCD

Cited by 10 publications

References 5 publications

A fast and sensitive room-temperature graphene nanomechanical bolometer

A fast and sensitive room-temperature graphene nanomechanical bolometer

New developments in SCD's 17-μm VOx μ-bolometer product line

BIRD640: SCD's high sensitivity VGA VO x μ-bolometer detector

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