Patents by Inventor Amr Ahmed Essawi Saleh

Amr Ahmed Essawi Saleh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Sub-wavelength Raman imaging with combined optical and electron excitation
    Patent number: 11994472
    Abstract: Improved stimulated Raman spectroscopy is provided by replacing the Stokes (or anti-Stokes) optical source with a localized electromagnetic emitter that is excited with a non-electromagnetic excitation. Such a localized emitter can be an efficient Stokes (or anti-Stokes) source for stimulated Raman spectroscopy, and can also provide deep sub-wavelength spatial resolution. In a preferred embodiment, an electron beam from an electron microscope is used to excite the localized emitter. This provides combined Raman imaging and electron microscopy that has the two imaging modalities inherently registered with each other.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: May 28, 2024
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Jennifer A. Dionne, Amr Ahmed Essawi Saleh, Daniel K. Angell
  • Label-free, real-time, whole-cell response monitoring with liquid Raman spectroscopy
    Publication number: 20230324381
    Abstract: Improved surface enhanced Raman spectroscopy (SERS) of biological targets in liquids is provided. Nanoparticles are treated with a surfactant to provide an electrostatic attraction between the nanoparticles and the biological targets. The resulting clustering of the nanoparticles at the biological targets improves the SERS signal, Such SERS spectroscopy enables real time monitoring of the biological targets, thereby enabling a wide variety of assays etc.
    Type: Application
    Filed: September 1, 2021
    Publication date: October 12, 2023
    Inventors: Loza Fekadu Tadesse, Jack HU, Amr Ahmed Essawi Saleh, Stefanie S. Jeffrey, Jennifer A Dionne
  • Sub-wavelength Raman imaging with combined optical and electron excitation
    Publication number: 20220268704
    Abstract: Improved stimulated Raman spectroscopy is provided by replacing the Stokes (or anti-Stokes) optical source with a localized electromagnetic emitter that is excited with a non-electromagnetic excitation. Such a localized emitter can be an efficient Stokes (or anti-Stokes) source for stimulated Raman spectroscopy, and can also provide deep sub-wavelength spatial resolution. In a preferred embodiment, an electron beam from an electron microscope is used to excite the localized emitter. This provides combined Raman imaging and electron microscopy that has the two imaging modalities inherently registered with each other.
    Type: Application
    Filed: July 24, 2020
    Publication date: August 25, 2022
    Inventors: Jennifer A. Dionne, Amr Ahmed Essawi Saleh, Daniel K. Angell
  • Method and structure for plasmonic optical trapping of nano-scale particles
    Patent number: 9281091
    Abstract: Methods and article for optically trapping nano-sized objects by illuminating a coaxial plasmonic aperture are disclosed.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: March 8, 2016
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Jennifer Anne Dionne, Amr Ahmed Essawi Saleh
  • METHOD AND STRUCTURE FOR PLASMONIC OPTICAL TRAPPING OF NANO-SCALE PARTICLES
    Publication number: 20160049215
    Abstract: Methods and article for optically trapping nano-sized objects by illuminating a coaxial plasmonic aperture are disclosed.
    Type: Application
    Filed: June 5, 2015
    Publication date: February 18, 2016
    Inventors: Jennifer Anne Dionne, Amr Ahmed Essawi Saleh
  • METHOD AND STRUCTURE FOR PLASMONIC OPTICAL TRAPPING OF NANO-SCALE PARTICLES
    Publication number: 20140374581
    Abstract: Methods and article for optically trapping nano-sized objects by illuminating a coaxial plasmonic aperture are disclosed.
    Type: Application
    Filed: March 13, 2014
    Publication date: December 25, 2014
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Jennifer Anne Dionne, Amr Ahmed Essawi Saleh