A Single‐Pixel Event Photoactive Device for Real‐Time, In‐Sensor Spatiotemporal Optical Information Processing
The increasing demand for energy‐efficient, sophisticated optical sensing technologies in various applications, from machine vision to optical communication, highlights the necessity for innovations in spatiotemporal information sensing and processing at a nearly single‐pixel scale. Traditional meth...
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| Abstract | The increasing demand for energy‐efficient, sophisticated optical sensing technologies in various applications, from machine vision to optical communication, highlights the necessity for innovations in spatiotemporal information sensing and processing at a nearly single‐pixel scale. Traditional methods, including multi‐pixel photodetector arrays and event‐based camera systems, often fail to provide rapid, real‐time detection and processing of dynamic events within the sensor. This shortcoming is particularly notable in handling high‐dimensional spatiotemporal data, where the dependency on sequential data input and external processing tools leads to latency, reduced throughput, and heightened energy consumption, thereby impeding real‐time parallel data processing capabilities. Here, a carrier‐selective, single‐pixel, position‐sensitive planar photoactive device that integrates spatiotemporal event sensing with inherent short‐term memory capabilities is introduced. The proof‐of‐concept single‐pixel event photoactive device enables in‐sensor spatiotemporal parallel optical information processing, efficiently managing multibit (>4 bit) data simultaneously and facilitating ultrafast (≈0.4 µs) recognition of input patterns with low energy consumption (25 femtojoules). Additionally, by adjusting the operating speed from continuous to pulsed light illumination, the sensor array can detect trajectories and absolute position of events, offering in‐sensor optical flow detection. This single‐pixel event photodetector marks significant advancement toward developing compact, energy‐efficient, ultrafast sensors suitable for a wide range of in sensor‐based photonic applications.
This research introduces a single‐pixel event photoactive device with selective carrier integration that merges spatiotemporal event sensing and built‐in short‐term memory. It processes multibit parallel data and recognizes patterns ultrafast (0.4 µs) with ultralow energy use (25 femtojoules). Adjusting its speed allows trajectory and position detection of events through optical flow sensing. |
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| AbstractList | The increasing demand for energy‐efficient, sophisticated optical sensing technologies in various applications, from machine vision to optical communication, highlights the necessity for innovations in spatiotemporal information sensing and processing at a nearly single‐pixel scale. Traditional methods, including multi‐pixel photodetector arrays and event‐based camera systems, often fail to provide rapid, real‐time detection and processing of dynamic events within the sensor. This shortcoming is particularly notable in handling high‐dimensional spatiotemporal data, where the dependency on sequential data input and external processing tools leads to latency, reduced throughput, and heightened energy consumption, thereby impeding real‐time parallel data processing capabilities. Here, a carrier‐selective, single‐pixel, position‐sensitive planar photoactive device that integrates spatiotemporal event sensing with inherent short‐term memory capabilities is introduced. The proof‐of‐concept single‐pixel event photoactive device enables in‐sensor spatiotemporal parallel optical information processing, efficiently managing multibit (>4 bit) data simultaneously and facilitating ultrafast (≈0.4 µs) recognition of input patterns with low energy consumption (25 femtojoules). Additionally, by adjusting the operating speed from continuous to pulsed light illumination, the sensor array can detect trajectories and absolute position of events, offering in‐sensor optical flow detection. This single‐pixel event photodetector marks significant advancement toward developing compact, energy‐efficient, ultrafast sensors suitable for a wide range of in sensor‐based photonic applications. The increasing demand for energy‐efficient, sophisticated optical sensing technologies in various applications, from machine vision to optical communication, highlights the necessity for innovations in spatiotemporal information sensing and processing at a nearly single‐pixel scale. Traditional methods, including multi‐pixel photodetector arrays and event‐based camera systems, often fail to provide rapid, real‐time detection and processing of dynamic events within the sensor. This shortcoming is particularly notable in handling high‐dimensional spatiotemporal data, where the dependency on sequential data input and external processing tools leads to latency, reduced throughput, and heightened energy consumption, thereby impeding real‐time parallel data processing capabilities. Here, a carrier‐selective, single‐pixel, position‐sensitive planar photoactive device that integrates spatiotemporal event sensing with inherent short‐term memory capabilities is introduced. The proof‐of‐concept single‐pixel event photoactive device enables in‐sensor spatiotemporal parallel optical information processing, efficiently managing multibit (>4 bit) data simultaneously and facilitating ultrafast (≈0.4 µs) recognition of input patterns with low energy consumption (25 femtojoules). Additionally, by adjusting the operating speed from continuous to pulsed light illumination, the sensor array can detect trajectories and absolute position of events, offering in‐sensor optical flow detection. This single‐pixel event photodetector marks significant advancement toward developing compact, energy‐efficient, ultrafast sensors suitable for a wide range of in sensor‐based photonic applications. The increasing demand for energy‐efficient, sophisticated optical sensing technologies in various applications, from machine vision to optical communication, highlights the necessity for innovations in spatiotemporal information sensing and processing at a nearly single‐pixel scale. Traditional methods, including multi‐pixel photodetector arrays and event‐based camera systems, often fail to provide rapid, real‐time detection and processing of dynamic events within the sensor. This shortcoming is particularly notable in handling high‐dimensional spatiotemporal data, where the dependency on sequential data input and external processing tools leads to latency, reduced throughput, and heightened energy consumption, thereby impeding real‐time parallel data processing capabilities. Here, a carrier‐selective, single‐pixel, position‐sensitive planar photoactive device that integrates spatiotemporal event sensing with inherent short‐term memory capabilities is introduced. The proof‐of‐concept single‐pixel event photoactive device enables in‐sensor spatiotemporal parallel optical information processing, efficiently managing multibit (>4 bit) data simultaneously and facilitating ultrafast (≈0.4 µs) recognition of input patterns with low energy consumption (25 femtojoules). Additionally, by adjusting the operating speed from continuous to pulsed light illumination, the sensor array can detect trajectories and absolute position of events, offering in‐sensor optical flow detection. This single‐pixel event photodetector marks significant advancement toward developing compact, energy‐efficient, ultrafast sensors suitable for a wide range of in sensor‐based photonic applications. This research introduces a single‐pixel event photoactive device with selective carrier integration that merges spatiotemporal event sensing and built‐in short‐term memory. It processes multibit parallel data and recognizes patterns ultrafast (0.4 µs) with ultralow energy use (25 femtojoules). Adjusting its speed allows trajectory and position detection of events through optical flow sensing. The increasing demand for energy-efficient, sophisticated optical sensing technologies in various applications, from machine vision to optical communication, highlights the necessity for innovations in spatiotemporal information sensing and processing at a nearly single-pixel scale. Traditional methods, including multi-pixel photodetector arrays and event-based camera systems, often fail to provide rapid, real-time detection and processing of dynamic events within the sensor. This shortcoming is particularly notable in handling high-dimensional spatiotemporal data, where the dependency on sequential data input and external processing tools leads to latency, reduced throughput, and heightened energy consumption, thereby impeding real-time parallel data processing capabilities. Here, a carrier-selective, single-pixel, position-sensitive planar photoactive device that integrates spatiotemporal event sensing with inherent short-term memory capabilities is introduced. The proof-of-concept single-pixel event photoactive device enables in-sensor spatiotemporal parallel optical information processing, efficiently managing multibit (>4 bit) data simultaneously and facilitating ultrafast (≈0.4 µs) recognition of input patterns with low energy consumption (25 femtojoules). Additionally, by adjusting the operating speed from continuous to pulsed light illumination, the sensor array can detect trajectories and absolute position of events, offering in-sensor optical flow detection. This single-pixel event photodetector marks significant advancement toward developing compact, energy-efficient, ultrafast sensors suitable for a wide range of in sensor-based photonic applications.The increasing demand for energy-efficient, sophisticated optical sensing technologies in various applications, from machine vision to optical communication, highlights the necessity for innovations in spatiotemporal information sensing and processing at a nearly single-pixel scale. Traditional methods, including multi-pixel photodetector arrays and event-based camera systems, often fail to provide rapid, real-time detection and processing of dynamic events within the sensor. This shortcoming is particularly notable in handling high-dimensional spatiotemporal data, where the dependency on sequential data input and external processing tools leads to latency, reduced throughput, and heightened energy consumption, thereby impeding real-time parallel data processing capabilities. Here, a carrier-selective, single-pixel, position-sensitive planar photoactive device that integrates spatiotemporal event sensing with inherent short-term memory capabilities is introduced. The proof-of-concept single-pixel event photoactive device enables in-sensor spatiotemporal parallel optical information processing, efficiently managing multibit (>4 bit) data simultaneously and facilitating ultrafast (≈0.4 µs) recognition of input patterns with low energy consumption (25 femtojoules). Additionally, by adjusting the operating speed from continuous to pulsed light illumination, the sensor array can detect trajectories and absolute position of events, offering in-sensor optical flow detection. This single-pixel event photodetector marks significant advancement toward developing compact, energy-efficient, ultrafast sensors suitable for a wide range of in sensor-based photonic applications. |
| Author | Kumar, Mohit Park, Hayoung Seo, Hyungtak |
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| Cites_doi | 10.1002/adma.201604049 10.1002/adma.201600884 10.1038/s41928-023-01055-2 10.1038/s41565-023-01379-2 10.1038/s41928-021-00586-w 10.1109/83.557336 10.1007/s12274-020-2917-3 10.1038/s41928-020-00466-9 10.1038/s41928-022-00755-5 10.1038/s41928-020-00501-9 10.1021/acsami.7b14250 10.1002/adma.201703694 10.1109/TDMR.2006.876971 10.1038/nmat4856 10.1002/adma.201705893 10.1038/s41377-020-0307-y 10.1002/adma.202203830 10.1038/s41565-020-0655-z 10.1088/1361-6463/ac1d10 10.1002/advs.202101106 10.1109/16.337461 10.1103/PhysRev.87.835 10.1109/TPAMI.2020.3008413 10.1021/acs.nanolett.1c03240 10.1109/TDMR.2011.2129593 10.1021/acsaelm.1c00955 10.1016/j.mattod.2015.06.001 |
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| SubjectTerms | Data processing Energy consumption event sensing photoactive device Information processing in‐sensor processing Machine vision Optical data processing Optical flow (image analysis) Parallel processing Pattern recognition Photometers Pixels Position sensing Sensor arrays Sensors short‐term memory spatiotemporal Spatiotemporal data ultralow energy |
| Title | A Single‐Pixel Event Photoactive Device for Real‐Time, In‐Sensor Spatiotemporal Optical Information Processing |
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