公开(公告)号：US11085882B1

公开(公告)日：2021-08-10

申请号：US17073289

申请日：2020-10-16

Applicant: Applied Spectra, Inc.

Inventor： Alexander A. Bol'shakov ,  Chunyi Liu ,  Sudeep J. Pandey ,  Richard E. Russo

IPC: G01N21/71 ,  B23K26/04 ,  H01J49/04 ,  H01J49/10 ,  H01J49/00

Abstract: Portable instruments for analyzing elemental composition of liquid and solid phase materials by laser induced ablation spectroscopy are disclosed. The optical path of a single pulsed laser beam in the instrument is directed to a position depending on the phase of the sample material. Liquid phase samples are aerosolized before streaming to an analysis zone where they are dissociated in a plasma plume. A wide range of physical and chemical characteristics of liquid materials can be analyzed by the instruments. A large number of sites within solid phase sample structures are analyzed using a movable x-y-z stage in the instrument and the results are displayed in a chemical map.

公开(公告)号：US10281406B1

公开(公告)日：2019-05-07

申请号：US14864844

申请日：2015-09-24

Applicant: Applied Spectra, Inc.

Inventor： Richard E. Russo ,  Jong Hyun Yoo ,  Chunyi Liu

IPC: G01N21/71 ,  G01N33/02 ,  G01J3/443 ,  G01N21/85 ,  G01N21/84

Abstract: A method and apparatus for analyzing one or more elements of targeted moving food surfaces uses laser-induced breakdown spectroscopy to detect the presence, absence, or amount of an element on a heterogeneous surface of an object, including surfaces of food products. A laser is used to quantify an element concentration without destroying the object. The method can be configured to include an automated on-line system comprising a closed-loop feedback control system operable to select a predetermined concentration.

公开(公告)号：US09678015B2

公开(公告)日：2017-06-13

申请号：US14865413

申请日：2015-09-25

Applicant: Frito-Lay North America, Inc. ,  Applied Spectra, Inc.

Inventor： Scott Fagan ,  Paul Allan Martin ,  Scotty G. Richardson ,  Richard E. Russo ,  Chen C. Shao ,  Jong Hyun Yoo ,  Chunyi Liu

IPC: G01J3/30 ,  G01N21/84 ,  G01N21/71 ,  G01N21/85 ,  G01J3/443 ,  G01N33/02

CPC classification number: G01N21/84 ,  G01J3/443 ,  G01N21/718 ,  G01N21/85 ,  G01N33/02 ,  G01N2021/845 ,  G01N2201/129

Abstract: A method and apparatus for analyzing one or more elements of targeted moving snack food surfaces uses laser-induced breakdown spectroscopy to detect the presence, absence, or amount of an element on a heterogeneous surface, including seasoned and ready-to-eat snack foods. A laser is used to quantify the element concentration without destroying the targeted sample. An automated on-line system may be integrated into the method to create a closed-loop feedback control system, adjusting the concentration as desired.