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oe1(光电查) - 科学论文

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?? 中文（中国） ▾

  • Two-Dimensional Plasmonic Grating for Intraocular Pressure Sensing

    摘要： Glaucoma is a group of characteristic optic neuropathies that collectively are the leading cause of irreversible blindness globally. Elevated intraocular pressure (IOP) is the major causal risk factor. While the fundamental mechanisms of the IOP elevation and consequent optic neuropathy are not well understood, recent studies have indicated that there may be pressure spikes directed at the optic nerve head during accommodation and that IOP may not be homogeneous throughout the eye. To facilitate the in situ and in vivo measurement of IOP in various locations within the vitreous and facilitate measurement of accommodative IOP spikes at the ONH, here, we report the development of an implantable, biocompatible, and miniaturized IOP sensor using 2-D plasmonic grating that generates structural color. The change of the grating period with pressure between 0 and 50 mmHg results in a change in the visible color, allowing us to observe small changes in pressure without additional electronics.

    关键词： glaucoma,intraocular pressure (IOP),Electromagnetic wave sensors,optical nerve head (ONH),surface plasmon

    更新于2025-09-11 14:15:04

  • A Low-Noise Image Sensor Readout Circuit With Internal Timing Generator

    摘要： We describe the design, development, and performance of a complementary metal-oxide semiconductor (CMOS) image sensor read-out circuit. Designed in a 0.35-μm CMOS technology and occupying an area of 2.3 × 13.6 mm2, the proposed multipixel image sensor readout integrated circuit with internal timing generator achieves high performance with 188.7-μV root mean square (RMS) of ultralow output noise, wide linear dynamic range of 2.3 V, low power consumption of 42 mA, and a simple timing scheme. The approaches to boost linear dynamic range are presented. The image sensor also provides the trigger signal for data acquisition purpose.

    关键词： Sensor systems (SYST),sensor packaging (PACK),electromagnetic wave sensors (OPTO)

    更新于2025-09-09 09:28:46