公开(公告)号：US20220236484A1

公开(公告)日：2022-07-28

申请号：US17584745

申请日：2022-01-26

Applicant: Worcester Polytechnic Institute

Inventor： Yuxiang Liu ,  Pratap Rao ,  Yundong Ren ,  Mucheng Li

IPC: G02B6/12 ,  G02B6/35 ,  G02B6/42 ,  G02B6/02

Abstract: A fiber optic sensing device includes an optical fiber having a polished end defining a flat sensory portion coated with a lossy-mode-resonance (LMR) coating. A reflective coating on an end face of the optical fiber facilitates propagation of a return signal. An optic circuit for identifies a wavelength attenuated by the LMR coating from the return signal reflected by the reflective coating based on a moisture presence at the sensory portion. Various gaseous parameters may be detected based on the coating on the sensory portion. An LMR coating of tin oxide (SnO2) is employed for moisture sensing.

公开(公告)号：US20220185688A1

公开(公告)日：2022-06-16

申请号：US17547557

申请日：2021-12-10

Applicant: Worcester Polytechnic Institute

Inventor： Himanshu Tanvar ,  Brajendra Mishra

IPC: C01F7/0653 ,  C01F7/066

Abstract: Bauxite residue recovery includes mixing a solution of hydrochloric acid (HCL) according to a predetermined concentration, and adding the HCL solution to a quantity of raw red mud recovered from industrial operations as waste material. The highly alkaline property of the bauxite residue, commonly known as red mud is at least partially neutralized from the HCL, and makes the resulting washed red mud more amenable to subsequent uses in various applications in fields such as construction, wastewater treatment, and metal recovery processes. The process recovers washed red mud from the red mud and HCL solution by filtering the raw red mud and HCL solution for generating a stream of leach liquor from the filtrate and the recovered washed red mud from the residue.

公开(公告)号：US20220115574A1

公开(公告)日：2022-04-14

申请号：US17500881

申请日：2021-10-13

Applicant: Worcester Polytechnic Institute

Inventor： Sathwik Bharadwaj Daralagodu Dattatreya Jois ,  Ashwin Ramasubramaniam ,  Lakshminarayanapuram Ramdas Ram-Mohan

IPC: H01L35/04 ,  H01L35/34

Abstract: A method of fabricating a two dimensional thermoelectric device includes forming dissimilar atomic layers having quantum electron transport properties, and forming a well-defined interface between the dissimilar atomic layers for effecting a thermoelectric transport by exploiting a gradient in the material parameters between the layers. The resulting device defines an inclusion matrix of the dissimilar atomic layers such that the inclusion layer is confined within a matrix formed by the other atomic layer.

公开(公告)号：US11266373B2

公开(公告)日：2022-03-08

申请号：US15488364

申请日：2017-04-14

Applicant: Worcester Polytechnic Institute ,  University of Massachusetts

Inventor： Dennis Giaya ,  Rebecca Stolarczyk ,  Yitzhak Mendelson ,  Arriyan Samandar Dowlatshahi ,  Raymond Dunn

IPC: A61B8/06 ,  A61B8/00 ,  A61B5/026 ,  G01S15/89 ,  A61B5/055 ,  G01S7/52 ,  A61B5/01 ,  A61B5/0205 ,  A61B5/00 ,  A61B8/08 ,  A61B8/12 ,  A61B5/02 ,  G16H40/67 ,  G16Z99/00 ,  A61B5/024 ,  A61B5/022

Abstract: The present invention relates to devices and methods for measuring vascular deficiency using Doppler ultrasound detection. Embodiments can be used to monitor the condition of surgical tissue flaps or other conditions in which obstruction in the vascular system can impact patient health. The systems can include a Doppler ultrasound probe, a color probe, a temperature probe, and/or other suitable probes to measure blood volume and perfusion status of a tissue region. The systems and methods can be used to monitor flaps after flap transplant surgeries. The systems and methods can automatedly assess tissue condition and alert the patient or medical staff if the condition has fallen below a threshold indicating occlusion of a blood vessel. One or more additional sensors can be integrated into a probe to measure vascular conditions and a metric can be computed based on sensed data.

公开(公告)号：US20220023743A1

公开(公告)日：2022-01-27

申请号：US17499052

申请日：2021-10-12

Applicant: Worcester Polytechnic Institute

Inventor： Christopher A. Brown ,  Madison M. Healey ,  Matthew Newell ,  Kendra S. O'Malley ,  Connor H. O'Neill

IPC: A63C9/00

Abstract: An impact absorbing ski binding interface device includes an elongated top plate having a toe end and a heel end adapted to engage a boot toe and a boot heel, respectively, and a bottom plate adapted to engage a ski, thereby securing the device between the boot and ski. A plurality of constant force spring linkages between the top plate and the bottom plate include a constant force spring linkage between the toe end and the bottom plate, and a constant force spring linkage between the heel end and the bottom plate, such that each of the constant force spring linkages have an opposed pair of deformable members for exerting a counterforce to vertical displacement forces between the top plate and the bottom plate for load mitigation.

公开(公告)号：US20210255186A1

公开(公告)日：2021-08-19

申请号：US17231533

申请日：2021-04-15

Applicant: Worcester Polytechnic Institute ,  University of Louisville Research Foundation, Inc.

Inventor： Balaji Panchapakesan ,  Farhad Khosravi ,  Shesh N. Rai

IPC: G01N33/574 ,  G01N15/10 ,  G01N27/12

Abstract: The present disclosure provides micro-array devices for capturing cells in blood and methods of their use. In some aspects, a method for counting cells in a blood sample is provided, the method comprising applying a blood sample onto a CNT device; allowing cells in the blood sample to differentially settle on the CNT device, and identifying and counting cells of preselected type in the blood sample.

公开(公告)号：US11002737B2

公开(公告)日：2021-05-11

申请号：US15718692

申请日：2017-09-28

Applicant: Worcester Polytechnic Institute ,  University of Louisville Research Foundation, Inc.

Inventor： Balaji Panchapakesan ,  Farhad Khosravi ,  Shesh N. Rai

IPC: G01N33/574 ,  G01N15/10 ,  G01N27/12 ,  G01N15/00

Abstract: The present disclosure provides micro-array devices for capturing cells in blood and methods of their use. In some aspects, a method for counting cells in a blood sample is provided, the method comprising applying a blood sample onto a CNT device; allowing cells in the blood sample to differentially settle on the CNT device, and identifying and counting cells of preselected type in the blood sample.

公开(公告)号：US20210128103A1

公开(公告)日：2021-05-06

申请号：US17083776

申请日：2020-10-29

Applicant: Worcester Polytechnic Institute

Inventor： Haichong Zhang ,  Ryosuke Tsumura ,  Yichuan Tang

IPC: A61B8/08 ,  A61B8/12 ,  A61B8/00

Abstract: A Ring-Arrayed Forward-viewing (RAF) ultrasound imaging and administration device combines an ultrasonic (US) US imager including a plurality of single element transducers arranged in a circular frame to define a ring array, and an instrument posture tracking circuit coupled to the ring array for performing RF (radio frequency) data acquisition with the plurality of ring-arrayed transducers. A needle holster is concentrically disposed in the ring array and is adapted to receive and direct an insertion instrument such as a needle, probe or extraction tool along an axis defined by a center of the ring array directed by the concentric needle holster. The tracking circuit includes a processor having instructions for instrument posture tracking and US imaging.

公开(公告)号：US10741890B2

公开(公告)日：2020-08-11

申请号：US15976981

申请日：2018-05-11

Applicant: Worcester Polytechnic Institute

Inventor： Yan Wang ,  Xiaotu Ma

IPC: H01M10/00 ,  H01M10/54 ,  C01B25/45 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/525 ,  C22B47/00 ,  C22B3/02 ,  H01M4/505 ,  C22B7/00 ,  C22B26/12 ,  H01M4/02

Abstract: Cathode material from exhausted lithium ion batteries are dissolved in a solution for extracting the useful elements Co (cobalt), Ni (nickel), Al (Aluminum) and Mn (manganese) to produce active cathode materials for new batteries. The solution includes compounds of valuable charge materials such as cobalt, nickel, aluminum and manganese dissolved as compounds from the exhausted cathode material of spent cells. However, LiFePO4 is a waste stream charge material often discarded due to infeasibility of recycling. LiFePO4 is precipitated as FePO4 and remains as a by-product, along with graphite and carbon, which are not dissolved into the solution. FePO4 can be separated from graphite and carbon, FePO4 can be used to synthesize LiFePO4 as cathode materials and graphite can be regenerated as anode materials.

公开(公告)号：US20200178790A1

公开(公告)日：2020-06-11

申请号：US16709088

申请日：2019-12-10

Applicant: Worcester Polytechnic Institute

Inventor： Yonatan Weiner

IPC: A61B3/024 ,  A61B3/00

Abstract: A field of vision assessment is performed by reported positional feedback of visual markers at an outer circumference of a subject's field of vision. An array of visual markers arranged in a grid is rendered near a peripheral vision limit of the subject. The visual markers are disposed at known locations relative to an origin of the field of vision of the subject. Based on reported visual markers, a mapping of the visual markers to the location denotes a point on a periphery of limit of the visual field. The mapped points define vertices of a polyhedron having edges denoted by the vertices and the origin. The volume of the resulting polyhedron correlates to the field of vision of the subject, since as the periphery of the field of vision increases, the computed volume also increases.