公开(公告)号：US20240285180A1

公开(公告)日：2024-08-29

申请号：US18578900

申请日：2022-07-29

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE

Inventor： Andrew CLOSSON ,  John X.J. ZHANG ,  Congran JIN

IPC: A61B5/021 ,  A61B5/00 ,  A61B5/024

CPC classification number: A61B5/02125 ,  A61B5/024 ,  A61B5/6807 ,  A61B5/6822 ,  A61B5/6824 ,  A61B5/743 ,  A61B2560/045 ,  A61B2560/0468 ,  A61B2562/0247 ,  A61B2562/028 ,  A61B2562/046 ,  A61B2562/125 ,  A61B2562/164 ,  A61B2562/166

Abstract: A system includes piezoelectric nanofibers, an encapsulation polymer, and patterned electrodes in an array. The array structure of the electrodes can create separate piezoelectric sensor elements, which can detect pressure from pressure such as arterial pulse waves. The sensors arrays can be used to detect the pulse wave velocity of the arterial pulse while it is superficial to near-surface arteries. This can enable detection of blood pressure in a wireless manner.

公开(公告)号：US20220268683A1

公开(公告)日：2022-08-25

申请号：US17677389

申请日：2022-02-22

Applicant: The Trustees of Dartmouth College

Inventor： Michael ZHANG ,  Congran JIN ,  Yuan NIE ,  Yundong REN ,  Nanjing HAO ,  John X. J. ZHANG

IPC: G01N15/06

Abstract: Opioids can be detected using a test system with ZnO pillars arranged in an array on a silicon wafer. Silver particles are on a top surface and/or side surface of the ZnO pillars. A sample fluid is applied to the test system. A concentration of an opioid compound in the sample fluid is determined using Surface-Enhanced Raman Spectroscopy of the test system. The sample fluid can be blood or a fluid isolated from blood.

公开(公告)号：US20220069737A1

公开(公告)日：2022-03-03

申请号：US17298943

申请日：2019-11-27

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE

Inventor： Congran JIN ,  Zi CHEN ,  Jinhua ZHANG ,  John X.J. ZHANG

IPC: H02N1/00 ,  G05B19/042 ,  B62D57/02

Abstract: An electrostatic actuator has a first polymeric layer formed with an arch, a first electrode of metal deposited upon the first polymeric layer; a second polymeric layer formed flat; a second electrode of metal deposited upon the second polymeric layer; and a dielectric disposed on the second electrode. The second polymeric layer is mechanically coupled to the first polymeric layer at a first and second end of the arch. In an embodiment, the actuator has a pair of legs attached to the arch of the first polymeric layer to form a crawler unit. In another embodiment a steerable robot has a first crawling unit with its second polymeric layer mechanically coupled to the second polymeric layer of a second crawling unit.