Our paper presents a novel long-wave infrared bolometric detector with high responsivity to detect low power radiation emitted from objects close to room temperature. The proposed design addresses the challenges associated with low power and low contrast radiation detection around 10 ?m wavelength by utilizing the ultra-high temperature coefficient of resistivity at the transition temperature of the transducing vanadium dioxide material. This sensitivity is augmented further by the use of nanobeam that boosts the final change in resistance and voltage readout upon radiation incidence due to the high length to cross-sectional area ratio. We also incorporate plasmonic absorbers to achieve resonant absorption of radiation from target objects. Conventionally, the detector sensitivity trades off with detector area or pixel dimension. Whereas, the proposed design is expected to achieve improvement in both thermal and spatial resolution with higher sensitivity by a smaller pixel dimension.

中文翻译：

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基于集成等离子体吸收体和VO钪纳米束的高灵敏度长波红外探测器设计


我们的论文提出了一种新型长波红外测辐射热探测器，具有高响应度，可检测接近室温的物体发出的低功率辐射。所提出的设计利用转换二氧化钒材料在转变温度下的超高电阻率温度系数，解决了与 10 µm 波长附近的低功率和低对比度辐射检测相关的挑战。通过使用纳米束进一步增强了这种灵敏度，由于长度与横截面积之比较高，纳米束提高了辐射入射时电阻和电压读数的最终变化。我们还采用等离子体吸收器来实现对目标物体辐射的共振吸收。传统上，探测器灵敏度与探测器面积或像素尺寸进行权衡。然而，所提出的设计预计将通过更小的像素尺寸实现热分辨率和空间分辨率的改进，并具有更高的灵敏度。