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However, existing wearable technologies suffer from limitations such as poor signal quality, limited sensing modalities, and low accuracy. Here, we propose a wearable ultrasonic array patch system comprising 64 elements to overcome the above difficulties and be used for tracking blood dynamics and blood pressure fluctuations. Guided by finite-element piezoelectric simulations, the size of the ultrasonic array was designed. Additionally, the patch utilizes a hydrogel material to ensure proper coupling with the skin. Testing revealed that the patch achieves a \u20136 dB bandwidth of 71% and a peak-to-peak received voltage of 0.22 V. The patch achieves a high spatial resolution of 0.96 mm \u00d7 0.60 mm at a detection depth of 15 mm. The system employs two key approaches to acquire physiological information. The first is a multimodal acquisition scheme capable of simultaneously capturing relative blood pressure trends and hemodynamic characteristics. The second is an angle-dependent reduced vector Doppler framework that utilizes multi-angle beams to calculate blood flow vectors. This work builds on existing wearable ultrasound devices and establishes a platform for the continuous assessment and monitoring of vascular hemodynamics.<\/jats:p>","DOI":"10.1021\/acssensors.6c02065","type":"journal-article","created":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T19:01:59Z","timestamp":1792782119000},"source":"Crossref","is-referenced-by-count":0,"title":["A Wearable Ultrasound Sensor for the Simultaneous Assessment of Hemodynamics and Blood Pressure"],"prefix":"10.1021","author":[{"given":"Xingqi","family":"Li","sequence":"first","affiliation":[{"name":"Harbin Institute of Technology , , ,","place":["Harbin, China, 150001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sijing","family":"Zhu","sequence":"additional","affiliation":[{"name":"the First Affiliated Hospital, Harbin Medical University , , ,","place":["Harbin, China, 150001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Wang","sequence":"additional","affiliation":[{"name":"Harbin Institute of Technology , , ,","place":["Harbin, China, 150001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhentao","family":"Zhou","sequence":"additional","affiliation":[{"name":"Harbin Institute of Technology , , ,","place":["Harbin, China, 150001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Boxuan","family":"Wu","sequence":"additional","affiliation":[{"name":"Harbin Institute of Technology , , ,","place":["Harbin, China, 150001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yilei","family":"Li","sequence":"additional","affiliation":[{"name":"Harbin Medical University , , ,","place":["Harbin, China, 150001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chengyang","family":"Zheng","sequence":"additional","affiliation":[{"name":"Harbin Institute of Technology , , ,","place":["Harbin, China, 150001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu","family":"Fu","sequence":"additional","affiliation":[{"name":"the First Affiliated Hospital, Harbin Medical University , , ,","place":["Harbin, China, 150001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ye","family":"Tian","sequence":"additional","affiliation":[{"name":"Harbin Medical University , , ,","place":["Harbin, China, 150001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3989-1819","authenticated-orcid":true,"given":"Tiezhu","family":"Liu","sequence":"additional","affiliation":[{"name":"Harbin Institute of Technology , , ,","place":["Harbin, China, 150001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinpeng","family":"Ma","sequence":"additional","affiliation":[{"name":"Harbin Institute of Technology , , ,","place":["Harbin, China, 150001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6238-6813","authenticated-orcid":true,"given":"Rui","family":"Zhang","sequence":"additional","affiliation":[{"name":"Harbin Institute of Technology , , ,","place":["Harbin, China, 150001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0943-7543","authenticated-orcid":true,"given":"Jia","family":"Zhang","sequence":"additional","affiliation":[{"name":"Harbin Institute of Technology , , ,","place":["Harbin, China, 150001"]},{"name":"Chongqing Research Institute, Harbin Institute of Technology , ,","place":["Chongqing, China, 401120"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,10,23]]},"reference":[{"issue":"1","key":"2026102315015139800_cit1","doi-asserted-by":"publisher","first-page":"11","DOI":"10.5334\/gh.1288","article-title":"The heart of the world","volume":"19","author":"Di Cesare","year":"2024","journal-title":"Glob. 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