公开(公告)号：US12031983B2

公开(公告)日：2024-07-09

申请号：US17502320

申请日：2021-10-15

Applicant: Purdue Research Foundation

Inventor： Joseph Irudayaraj ,  Wen Ren

IPC: G01N33/543 ,  B01L3/00 ,  G01N33/52 ,  G01N33/569 ,  G01N33/58

CPC classification number: G01N33/54388 ,  B01L3/5023 ,  G01N33/521 ,  G01N33/56916 ,  G01N33/586 ,  G01N33/587

Abstract: The present disclosure relates to a novel method for lateral flow immunoassay (LFIA) by utilizing plasmonic enhancement strategy. More specifically, the present disclosure provides a plasmonic enhanced lateral flow sensor (pLFS) concept by introducing a liposome-based amplification of the colorimetric signals on the lateral flow platform for ultrasensitive detection of pathogens.

公开(公告)号：US20240212188A1

公开(公告)日：2024-06-27

申请号：US18542709

申请日：2023-12-17

Applicant: Purdue Research Foundation

Inventor： Jian Jin ,  Zhihang Song

IPC: G06T7/64

CPC classification number: G06T7/64 ,  G06T2207/10076 ,  G06T2207/30188

Abstract: A method for spatial analysis of leaf images is disclosed which includes acquiring one or more leaf images of plants, generating 3-dimensional (3D) images from the acquired one or more images from spectral heatmaps, identifying a stem and a plurality of veins, identifying i) one or more of valleys and ridges as regions between two consecutive veins from the plurality of veins, or ii) one or more of peaks and valleys as regions between two consecutive veins from the plurality of veins in the one or more generated 3D images, calculating average slopes in the generated 3D images between i) one or more of peak-to-valley, or ii) ridge-to-valley for the veins, calculating a nitrogen index based on the calculated average slopes, if the calculated average slope is between two thresholds, communicate to a user to add a predetermined chemical to the plants.

公开(公告)号：US12017983B2

公开(公告)日：2024-06-25

申请号：US18169086

申请日：2023-02-14

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： Rakesh Agrawal ,  Zewei Chen ,  Peter Oladipupo

IPC: C07C5/327 ,  B01J19/00 ,  B01J19/24

CPC classification number: C07C5/327 ,  B01J19/0013 ,  B01J19/2415 ,  B01J2219/00081 ,  B01J2219/00085 ,  B01J2219/00132

Abstract: Systems and processes for dehydrogenating one or more alkanes using electrically heated dehydrogenation reactors. The source of electric energy or power can be a power grid, solar panel, windmill, hydropower, nuclear power, fuel cell, gas turbines, steam turbines, portable generator or the like. The systems and processes provided herein result in a simpler dehydrogenation process which is particularly beneficial at a small scale and at remote locations, including the well site.

公开(公告)号：US12016690B2

公开(公告)日：2024-06-25

申请号：US16779695

申请日：2020-02-03

Applicant: Purdue Research Foundation

Inventor： Bumsoo Han ,  Yingnan Shen

IPC: G06T7/00 ,  A61B5/00 ,  A61B5/15 ,  A61L27/38 ,  C12M1/26 ,  C12M1/34 ,  G01N21/00 ,  G01N21/64 ,  G01N33/483 ,  G09B23/30

CPC classification number: A61B5/150106 ,  A61B5/0033 ,  A61B5/0064 ,  A61B5/0077 ,  A61B5/150167 ,  A61L27/3804 ,  C12M33/04 ,  C12M41/46 ,  G01N21/00 ,  G01N21/6456 ,  G01N33/4833 ,  G06T7/0012 ,  G09B23/306 ,  G06T2207/10064 ,  G06T2207/30088

Abstract: Disclosed herein is a platform and method to quantify spatiotemporal tissue swelling during biologics injection, and to predict associated increase in the mechanical stress and interstitial fluid pressure (IFP) of tissues. Accurate measure and estimation of tissue swelling, thus, can be quantitative and predictive indicator of the IPD.

公开(公告)号：US12013986B2

公开(公告)日：2024-06-18

申请号：US17838887

申请日：2022-06-13

Applicant: Purdue Research Foundation

Inventor： Ayan Sinha ,  Chiho Choi ,  Joon Hee Choi ,  Karthik Ramani

IPC: G06F3/01 ,  G06N20/00 ,  G06V10/44 ,  G06V20/64 ,  G06V30/194 ,  G06V40/10 ,  H04N13/271

CPC classification number: G06F3/017 ,  G06N20/00 ,  G06V10/454 ,  G06V20/653 ,  G06V30/194 ,  G06V40/11 ,  G06V40/113 ,  H04N13/271

Abstract: A method for hand pose identification in an automated system includes providing map data of a hand of a user to a first neural network trained to classify features corresponding to a joint angle of a wrist in the hand to generate a first plurality of activation features and performing a first search in a predetermined plurality of activation features stored in a database in the memory to identify a first plurality of hand pose parameters for the wrist associated with predetermined activation features in the database that are nearest neighbors to the first plurality of activation features. The method further includes generating a hand pose model corresponding to the hand of the user based on the first plurality of hand pose parameters and performing an operation in the automated system in response to input from the user based on the hand pose model.

公开(公告)号：US20240192011A1

公开(公告)日：2024-06-13

申请号：US18530435

申请日：2023-12-06

Applicant: Purdue Research Foundation

Inventor： Ethan M. Brown ,  Eric P. O'Keefe ,  Fernando Vega ,  Shyam K. Reddy ,  Ivan Malov

IPC: G01C21/36 ,  G01C21/28 ,  G06F3/01

CPC classification number: G01C21/3652 ,  G01C21/28 ,  G06F3/014 ,  G06F3/016

Abstract: A wearable device worn by a user is disclosed which includes a plurality of input device interfaces each configured to receive input from a sensor coupled to a user, a controller configured to generate a two-dimensional map of the user's three-dimensional space based on the received inputs, and a plurality of haptic feedback devices disposed on the wearable device, wherein the controller is configured to selectively activate each of the plurality of haptic feedback devices to signal the user's position in the three-dimensional space based on the generated two-dimensional map as the user moves in the three-dimensional space.

公开(公告)号：US20240191004A1

公开(公告)日：2024-06-13

申请号：US18539218

申请日：2023-12-13

Applicant: Purdue Research Foundation

Inventor： Liang Pan ,  Xianfan Xu ,  Bryan William Boudouris

IPC: C08F2/50 ,  B29C64/135 ,  B29C64/20 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  C08F222/10

CPC classification number: C08F2/50 ,  B29C64/135 ,  B29C64/20 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  C08F222/102 ,  C08F222/103 ,  C08F222/105 ,  B29K2105/0005

Abstract: A three-dimensional nanolithography system includes forming a photocurable resin including one or more organic monomers, a photoinitiator, and an inhibitor, defining a lithographical patterning region, directing a light beam toward the lithographical patterning region to initiate polymerization, and controlling an initiator depletion technique to reduce an undesired portion of the polymerization.

公开(公告)号：US20240186133A1

公开(公告)日：2024-06-06

申请号：US18520974

申请日：2023-11-28

Applicant: Purdue Research Foundation

Inventor： Robert Graham Cooks ,  Zane Baird ,  Wen-Ping Peng

IPC: H01J49/06 ,  H01J49/10 ,  H01J49/16 ,  H01J49/26

CPC classification number: H01J49/067 ,  H01J49/06 ,  H01J49/10 ,  H01J49/165 ,  H01J49/26

Abstract: The invention generally relates to apparatuses for focusing ions at or above ambient pressure and methods of use thereof. In certain embodiments, the invention provides an apparatus for focusing ions that includes an electrode having a cavity, at least one inlet within the electrode configured to operatively couple with an ionization source, such that discharge generated by the ionization source is injected into the cavity of the electrode, and an outlet. The cavity in the electrode is shaped such that upon application of voltage to the electrode, ions within the cavity are focused and directed to the outlet, which is positioned such that a proximal end of the outlet receives the focused ions and a distal end of the outlet is open to ambient pressure.

公开(公告)号：US20240183985A1

公开(公告)日：2024-06-06

申请号：US18218073

申请日：2023-07-04

Applicant: Purdue Research Foundation ,  THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY

Inventor： Amr Mohammad E. A. SHALTOUT ,  Vladimir M. SHALAEV ,  Mark L. BRONGERSMA

IPC: G01S17/89 ,  G01S7/481

CPC classification number: G01S17/89 ,  G01S7/4814 ,  G01S7/4817

Abstract: A laser beam steering system is disclosed which includes a laser source which produces a pulsed laser light beam with a frequency comb spectrum, a first metasurface configured to i) directly receive the pulsed laser and ii) directly generate a diffracted pulsed laser output at different frequencies with a beam at a center frequency normal to the first metasurface; and a second metasurface configured to i) directly receive the diffracted pulsed laser output and ii) to focus onto different foci at a focal plane, light propagating from the focal plane leads to generation of one or more optical beams that are controlled in space and time.

公开(公告)号：US20240175522A1

公开(公告)日：2024-05-30

申请号：US18389880

申请日：2023-12-20

Applicant: Purdue Research Foundation

Inventor： Alina Alexeenko ,  Anthony George Cofer ,  Stephen Douglas Heister

IPC: F16K99/00 ,  B64G1/10 ,  B64G1/40 ,  B64G1/50

CPC classification number: F16K99/0017 ,  B64G1/10 ,  B64G1/401 ,  B64G1/50 ,  F16K99/0036 ,  F16K2099/0092 ,  F16K2099/0094

Abstract: A microfabricated valve with no moving parts. In one embodiment, the valve includes a reservoir of a liquid that is in fluid communication with an outlet channel having a throat that is less than 100 microns wide. Preferably, the channel is an elongated slit. The configuration of channel is adapted and configured such that surface tension of the liquid prevents flow out of the channel. A heater increases the temperature of the meniscus of the fluid, until a portion of the fluid is ejected from the channel. The ejection of the fluid creates both a thrusting effect and a cooling effect.