ArticleBiomedical optics express2022
Opto-ultrasound biosensor for wearable and mobile devices: realization with a transparent ultrasound transducer.
Article in Biomedical optics express, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
18 citing papers in PubMed.
- Advanced methods of wearable ultrasound and photoacoustic imaging devices: A review.Photoacoustics · 2026Article
- A Low-Cost, Lightweight High-Frequency Ultrasound Transducer with Aluminum Electrodes and 3D-Printed Polymer Housing.Biosensors · 2026Article
- Wearable ultrasound: a review of core technologies and clinical applications in cardiovascular monitoring.Microsystems & nanoengineering · 2026Review
- Flexible bioelectronic sensors promote the advancement of wearable ultrasound technology in the medicine.Microsystems & nanoengineering · 2026Review
- Fabrication of optically transparent ultrasound transducers to integrate light and sound in multimodal biomedical systems.Nature protocols · 2026Review
- Photoacoustic Microscopy for Multiscale Biological System Visualization and Clinical Translation.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Review
- From light to sound: Seeing and hearing the placenta in health and disease.Science advances · 2026Review
- A handheld photoacoustic microscopic probe integrating a transparent ultrasound transducer and a fiber scanner.Nature communications · 2025Article
- Clinical ultrasound, photoacoustic, and fluorescence image-guided lymphovenous anastomosis microsurgery via a transparent ultrasound transducer array.Nature communications · 2025Article
- A comprehensive review of high-performance photoacoustic microscopy systems.Photoacoustics · 2025Review
- Wide-Field High-Speed Scanning Acoustic/Photoacoustic Microscopy for Whole-Body Imaging of Small Animals.Biosensors · 2025Article
- Transparent ultrasonic transducers based on relaxor ferroelectric crystals for advanced photoacoustic imaging.Nature communications · 2024Article
- Quantitative volumetric photoacoustic assessment of vasoconstriction by topical corticosteroid application in mice skin.Photoacoustics · 2024Article
- Emerging Wearable Ultrasound Technology.IEEE transactions on ultrasonics, ferroelectrics, and frequency control · 2024Review
- Introduction to the feature issue: Advances in Optical Biosensors for Biomedical Applications.Biomedical optics express · 2024Article
- Broadband transparent ultrasound transducer with polymethyl methacrylate as matching layer forPhotoacoustics · 2023Article
- Non-contact measurement of neck pulses achieved by imaging micro-motions in the neck skin.Biomedical optics express · 2023Article
- Introduction to the Biophotonics Congress 2022 feature issue.Biomedical optics express · 2023Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Mobile and wearable healthcare electronics are widely used for measuring bio-signals using various fusion sensors that employ photoplethysmograms, cameras, microphones, ultrasound (US) sensors, and accelerometers. However, the consumer demand for small form factors has significantly increased as the integration of multiple sensors is difficult in small mobile or wearable devices. This study proposes two novel opto-US sensors, namely (1) a wearable photoplethysmography (PPG)-US device and (2) a PPG sensor built-in mobile smartphone with a US sensor, seamlessly integrated using a transparent ultrasound transducer (TUT). The TUT exhibits a center frequency of 6 MHz with a 50% bandwidth and 82% optical transparency in visible and near-infrared regions. We developed an integrated wearable PPG-US device to demonstrate its feasibility and coupled the TUT sensor with a smartphone. We measured the heart rates optically and acoustically in human subjects and quantified the oxygen saturation optically by passing light through the TUT. The proposed proof-of-concept is a novel sensor fusion for mobile and wearable devices that require a small form factor and aim to improve digital healthcare. The results of this study can form the basis for innovative developments in sensor-based high-tech industrial applications, such as automobiles, robots, and drones, in addition to healthcare applications.
Identifiers
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.