Patents by Inventor Paul Corkum
Paul Corkum 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).
-
Patent number: 11967496Abstract: The present invention relates to the high resolution imaging of samples using imaging mass spectrometry (IMS) and to the imaging of biological samples by imaging mass cytometry (IMC™) in which labelling atoms are detected by IMS. LA-ICP-MS (a form of IMS in which the sample is ablated by a laser, the ablated material is then ionised in an inductively coupled plasma before the ions are detected by mass spectrometry) has been used for analysis of various substances, such as mineral analysis of geological samples, analysis of archaeological samples, and imaging of biological substances. However, traditional LA-ICP-MS systems and methods may not provide high resolution. Described herein are methods and systems for high resolution IMS and IMC.Type: GrantFiled: January 21, 2022Date of Patent: April 23, 2024Assignees: University of OttawaInventors: Paul Corkum, Alexander V. Loboda
-
Publication number: 20220310373Abstract: Embodiments of the present invention relate to replacement of the previous ICP-based ionisation system with a new laser ionisation system, providing improved mass spectrometer-based apparatus and methods for using them to analyse samples, in particular the use of mass spectrometry mass cytometry, imaging mass spectrometry and imaging mass cytometry, for the analysis of biological samples. Accordingly, embodiments of the present invention provide an apparatus, for example a mass cytometer, comprising: 1) a sampler; 2) a laser ionisation system to receive material removed from the sample by the sampler, wherein the laser ionisation system comprises an ionisation system conduit and a pulsed laser adapted to ionise sample material passing through or exiting the ionisation system conduit; and 3) a mass spectrometer to receive elemental ions from said ionisation system and to analyse said elemental ions.Type: ApplicationFiled: June 17, 2020Publication date: September 29, 2022Applicant: Fluidigm Canada Inc.Inventors: Paul Corkum, Alexander Loboda, David M. Rayner
-
Publication number: 20220223398Abstract: The present invention relates to the high resolution imaging of samples using imaging mass spectrometry (IMS) and to the imaging of biological samples by imaging mass cytometry (IMC™) in which labelling atoms are detected by IMS. LA-ICP-MS (a form of IMS in which the sample is ablated by a laser, the ablated material is then ionised in an inductively coupled plasma before the ions are detected by mass spectrometry) has been used for analysis of various substances, such as mineral analysis of geological samples, analysis of archaeological samples, and imaging of biological substances. However, traditional LA-ICP-MS systems and methods may not provide high resolution. Described herein are methods and systems for high resolution IMS and IMC.Type: ApplicationFiled: January 21, 2022Publication date: July 14, 2022Applicant: Fluidigm Canada Inc.Inventors: Paul Corkum, Alexander V. Loboda
-
Patent number: 11264221Abstract: The present invention relates to the high resolution imaging of samples using imaging mass spectrometry (IMS) and to the imaging of biological samples by imaging mass cytometry (IMCTM) in which labelling atoms are detected by IMS. LA-ICP-MS (a form of IMS in which the sample is ablated by a laser, the ablated material is then ionised in an inductively coupled plasma before the ions are detected by mass spectrometry) has been used for analysis of various substances, such as mineral analysis of geological samples, analysis of archaeological samples, and imaging of biological substances. However, traditional LA-ICP-MS systems and methods may not provide high resolution. Described herein are methods and systems for high resolution IMS and IMC.Type: GrantFiled: June 18, 2019Date of Patent: March 1, 2022Assignee: FLUIDIGM CANADA INC.Inventors: Paul Corkum, Alexander V. Loboda
-
Publication number: 20210118661Abstract: The present invention relates to the high resolution imaging of samples using imaging mass spectrometry (IMS) and to the imaging of biological samples by imaging mass cytometry (IMCTM) in which labelling atoms are detected by IMS. LA-ICP-MS (a form of IMS in which the sample is ablated by a laser, the ablated material is then ionised in an inductively coupled plasma before the ions are detected by mass spectrometry) has been used for analysis of various substances, such as mineral analysis of geological samples, analysis of archaeological samples, and imaging of biological substances. However, traditional LA-ICP-MS systems and methods may not provide high resolution. Described herein are methods and systems for high resolution IMS and IMC.Type: ApplicationFiled: June 18, 2019Publication date: April 22, 2021Applicant: Fluidigm Canada Inc.Inventors: Paul Corkum, Alexander V. Loboda
-
Publication number: 20210032739Abstract: A method and apparatus for laser-induced forward transfer (LIFT) processing including a dynamic release mirror structure (DRMS) for desorbing delicate materials from a first surface and depositing a resultant formation of a portion of the materials on a second surface without damaging the material or coating the material with contaminants. The DRMS includes a lower-situated absorbing polymer layer on a transparent substrate. The lower-situated absorbing polymer layer is coated with a metal layer to reflect light of a laser pulse. The metal layer is topped by an upper-situated polymer cap layer. The 3-part layering of the metal layer sandwiched between the upper and lower polymer layers is variable in terms of materials and thickness to tune DRMS operational characteristics.Type: ApplicationFiled: July 24, 2020Publication date: February 4, 2021Inventors: Alan GODFREY, Lakshmi DEEPAK KALLEPALLI, Paul CORKUM
-
Patent number: 9496681Abstract: A method and apparatus is disclosed for generating tunable attosecond-scale radiation pulses, with a frequency in range of ultraviolet to soft-X-ray, from a solid-state medium. The invention utilizes an intense laser pulse to drive a high harmonic generation (HHG) process in a solid state medium and a weak secondary field to control the HHG process. The weak secondary field has a frequency equal to the second harmonic of the intense laser pulse. The spatial, temporal and spectral properties of the HHG process and the emitted harmonic beam are tuned by adjusting the relative delay between the two fields and the intensity of the weak secondary field.Type: GrantFiled: November 10, 2015Date of Patent: November 15, 2016Assignee: University of OttawaInventors: Giulio Vampa, Paul Corkum, Thomas Brabec
-
Publication number: 20160149371Abstract: A method and apparatus is disclosed for generating tunable attosecond-scale radiation pulses, with a frequency in range of ultraviolet to soft-X-ray, from a solid-state medium. The invention utilizes an intense laser pulse to drive a high harmonic generation (HHG) process in a solid state medium and a weak secondary field to control the HHG process. The weak secondary field has a frequency equal to the second harmonic of the intense laser pulse. The spatial, temporal and spectral properties of the HHG process and the emitted harmonic beam are tuned by adjusting the relative delay between the two fields and the intensity of the weak secondary field.Type: ApplicationFiled: November 10, 2015Publication date: May 26, 2016Inventors: Giulio Vampa, Paul Corkum, Thomas Brabec
-
Patent number: 9165753Abstract: The present disclosure generally provides ionization methods and devices for use in mass spectrometry. In some embodiments, the ionization methods and devices employ short laser pulses (e.g., pulses having pulsewidths in a range of about 2 fs to about 1 ps) at a high intensity (e.g., an intensity in a range of about 1 TW/cm2 to about 1000 TW/cm2) to ionize an analyte an ambient pressure greater than about 10?5 Torr (e.g., an ambient pressure in a range of about 1 atmosphere to about 100 atmospheres).Type: GrantFiled: December 4, 2012Date of Patent: October 20, 2015Assignees: DH Technologies Development Pte. Ltd., National Research Council of CanadaInventors: Alexandre V. Loboda, Paul Corkum, David Rayner
-
Publication number: 20150008313Abstract: The present disclosure generally provides ionization methods and devices for use in mass spectrometry. In some embodiments, the ionization methods and devices employ short laser pulses (e.g., pulses having pulsewidths in a range of about 2 fs to about 1 ps) at a high intensity (e.g., an intensity in a range of about 1 TW/cm2 to about 1000 TW/cm2) to ionize an analyte an ambient pressure greater than about 10?5 Torr (e.g., an ambient pressure in a range of about 1 atmosphere to about 100 atmospheres).Type: ApplicationFiled: December 4, 2012Publication date: January 8, 2015Inventors: Alexandre V. Loboda, Paul Corkum, David Rayner
-
Patent number: 7438824Abstract: To make high quality long-range periodic nanostructures in a transparent or semi-transparent substrate, the transparent or semi-transparent substrate is scanned with a linearly polarized laser beam generated by a femtosecond laser and exceeding a predetermined energy/pulse threshold along a scanning path. Sub-diffraction limit structures are formed as periodic planes of modified material in the transparent or semi-transparent substrate extending along the scanning path. The modified material can then be chemically etched to form cavities.Type: GrantFiled: March 24, 2006Date of Patent: October 21, 2008Assignee: National Research Council of CanadaInventors: Rod Taylor, Paul Corkum, Ravi Bhardwaj Vedula, Eli Simova, David Rayner, Cyril Hnatovsky
-
Publication number: 20060219676Abstract: To make high quality long-range periodic nanostructures in a transparent or semi-transparent substrate, the transparent or semi-transparent substrate is scanned with a linearly polarized laser beam generated by a femtosecond laser and exceeding a predetermined energy/pulse threshold along a scanning path. Sub-diffraction limit structures are formed as periodic planes of modified material in the transparent or semi-transparent substrate extending along the scanning path. The modified material can then be chemically etched to form cavities.Type: ApplicationFiled: March 24, 2006Publication date: October 5, 2006Applicant: National Research Council of CanadaInventors: Rod Taylor, Paul Corkum, Ravi Vedula, Eli Simova, David Rayner, Cyril Hnatovsky
-
Patent number: 7033519Abstract: A sub-micron structure is fabricated in a transparent dielectric material by focusing femtosecond laser pulses into the dielectric to create a highly tapered modified zone with modified etch properties. The dielectric material is then selectively etched into the modified zone from the direction of the narrow end of the tapered zone so that as the selective etching proceeds longitudinally into the modified zone, the progressively increasing width of the modified zone compensates for lateral etching occurring closer to the narrow end so as to produce steep-walled holes. The unetched portion of the modified zone produced by translating the laser beam close to and parallel to the bottom surface of the dielectric can serve as an optical waveguide to collect light from or deliver light to the etched channel which can contain various biological, optical, or chemical materials for sensing applications.Type: GrantFiled: May 8, 2003Date of Patent: April 25, 2006Assignee: National Research Council of CanadaInventors: Rod Taylor, Cyril Hnatovsky, Paul Corkum, David Rayner, Ravi Bhardwaj
-
Publication number: 20050167410Abstract: The present invention relates to a method for writing an optical structure within a workpiece of a dielectric material using FLDM. In a first embodiment system parameters for the FLDM are determined in dependence upon the dielectric material, a predetermined volume element and a predetermined change of the refractive index of the dielectric material within the predetermined volume element. The system parameters are determined such that self-focusing of a pulsed femtosecond laser beam is inhibted by non-linear absorption of the energy of the pulsed femtosecond laser beam within the dielectric material. A pulsed femtosecond laser beam based on the determined system parameters is focused at a predetermined location within the workpiece for inducing a change of the refractive index through dielectric modification within the predetermined volume element, the volume element including the focus. Various embodiments enable writing of various different optical structures into a workpiece.Type: ApplicationFiled: March 24, 2005Publication date: August 4, 2005Inventors: Orson Bourne, David Rayner, Paul Corkum, Manjusha Mehendale, Andrei Naumov
-
Patent number: 6884960Abstract: The present invention relates to a method for writing an optical structure within a workpiece of a dielectric material using FLDM. In a first embodiment system parameters for the FLDM are determined in dependence upon the dielectric material, a predetermined volume element and a predetermined change of the refractive index of the dielectric material within the predetermined volume element. The system parameters are determined such that self-focusing of a pulsed femtosecond laser beam is inhibted by non-linear absorption of the energy of the pulsed femtosecond laser beam within the dielectric material. A pulsed femtosecond laser beam based on the determined system parameters is focused at a predetermined location within the workpiece for inducing a change of the refractive index through dielectric modification within the predetermined volume element, the volume element including the focus. Various embodiments enable writing of various different optical structures into a workpiece.Type: GrantFiled: August 21, 2001Date of Patent: April 26, 2005Assignee: National Research Council of CanadaInventors: Orson Bourne, David Rayner, Paul Corkum, Manjusha Mehendale, Andrei Yu Naumov
-
Publication number: 20040094527Abstract: The present invention relates to a method for writing an optical structure within a workpiece of a dielectric material using FLDM. In a first embodiment system parameters for the FLDM are determined in dependence upon the dielectric material, a predetermined volume element and a predetermined change of the refractive index of the dielectric material within the predetermined volume element. The system parameters are determined such that self-focusing of a pulsed femtosecond laser beam is inhibted by non-linear absorption of the energy of the pulsed femtosecond laser beam within the dielectric material. A pulsed femtosecond laser beam based on the determined system parameters is focused at a predetermined location within the workpiece for inducing a change of the refractive index through dielectric modification within the predetermined volume element, the volume element including the focus. Various embodiments enable writing of various different optical structures into a workpiece.Type: ApplicationFiled: June 16, 2003Publication date: May 20, 2004Inventors: Orson Bourne, David Rayner, Paul Corkum, Manjusha Mehendale, Andrei Yu Naumov
-
Publication number: 20030235385Abstract: A sub-micron structure is fabricated in a transparent dielectric material by focusing femtosecond laser pulses into the dielectric to create a highly tapered modified zone with modified etch properties. The dielectric material is then selectively etched into the modified zone from the direction of the narrow end of the tapered zone so that as the selective etching proceeds longitudinally into the modified zone, the progressively increasing width of the modified zone compensates for lateral etching occurring closer to the narrow end so as to produce steep-walled holes. The unetched portion of the modified zone produced by translating the laser beam close to and parallel to the bottom surface of the dielectric can serve as an optical waveguide to collect light from or deliver light to the etched channel which can contain various biological, optical, or chemical materials for sensing applications.Type: ApplicationFiled: May 8, 2003Publication date: December 25, 2003Inventors: Rod Taylor, Cyril Hnatovsky, Paul Corkum, David Rayner, Ravi Bhardwaj