Bibliographic Details
| Title: |
Flexible computational photodetectors for self-powered activity sensing |
| Authors: |
Dingtian Zhang, Canek Fuentes-Hernandez, Raaghesh Vijayan, Yang Zhang, Yunzhi Li, Jung Wook Park, Yiyang Wang, Yuhui Zhao, Nivedita Arora, Ali Mirzazadeh, Youngwook Do, Tingyu Cheng, Saiganesh Swaminathan, Thad Starner, Trisha L. Andrew, Gregory D. Abowd |
| Source: |
npj Flexible Electronics, Vol 6, Iss 1, Pp 1-8 (2022) |
| Publisher Information: |
Nature Portfolio, 2022. |
| Publication Year: |
2022 |
| Collection: |
LCC:Electronics
LCC:Materials of engineering and construction. Mechanics of materials |
| Subject Terms: |
Electronics, TK7800-8360, Materials of engineering and construction. Mechanics of materials, TA401-492 |
| More Details: |
Abstract Conventional vision-based systems, such as cameras, have demonstrated their enormous versatility in sensing human activities and developing interactive environments. However, these systems have long been criticized for incurring privacy, power, and latency issues due to their underlying structure of pixel-wise analog signal acquisition, computation, and communication. In this research, we overcome these limitations by introducing in-sensor analog computation through the distribution of interconnected photodetectors in space, having a weighted responsivity, to create what we call a computational photodetector. Computational photodetectors can be used to extract mid-level vision features as a single continuous analog signal measured via a two-pin connection. We develop computational photodetectors using thin and flexible low-noise organic photodiode arrays coupled with a self-powered wireless system to demonstrate a set of designs that capture position, orientation, direction, speed, and identification information, in a range of applications from explicit interactions on everyday surfaces to implicit activity detection. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2397-4621 |
| Relation: |
https://doaj.org/toc/2397-4621 |
| DOI: |
10.1038/s41528-022-00137-z |
| Access URL: |
https://doaj.org/article/fc2437ba72584cedaab6626464ab9e57 |
| Accession Number: |
edsdoj.fc2437ba72584cedaab6626464ab9e57 |
| Database: |
Directory of Open Access Journals |
