Patents by Inventor Azzedine Hammiche

Azzedine Hammiche 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: 7665889
    Abstract: The invention is a system and method for producing highly localized calorimetry data on a sample surface. The system is based on an SPM or other system with a probe and fine positioning capability. A heated probe is used to take a small sample (nano-sample) of a surface, and thereby make calorimetry measurements in a controlled manner.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: February 23, 2010
    Inventors: Kevin Kjoller, Azzedine Hammiche
  • Publication number: 20070263696
    Abstract: The invention is a system and method for producing highly localized calorimetry data on a sample surface. The system is based on an SPM or other system with a probe and fine positioning capability. A heated probe is used to take a small sample (nano-sample) of a surface, and thereby make calorimetry measurements in a controlled manner.
    Type: Application
    Filed: May 8, 2007
    Publication date: November 15, 2007
    Inventors: Kevin Kjoller, Azzedine Hammiche
  • Patent number: 6491425
    Abstract: A platinum/Rhodium resistance thermal probe is used as an active device which acts both as a highly localized heat source and as a detector to perform localized differential calorimetry, by thermally inducing and detecting events such as glass transitions, meltings, recystallizations and thermal decomposition within volumes of material estimated at a few &mgr;m3. Furthermore, the probe is used to image variations in thermal conductivity and diffusivity, to perform depth profiling and sub-surface imaging. The maximum depth of the sample that is imaged is controlled by generating and detecting evanescent temperature waves in the sample.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: December 10, 2002
    Assignee: TA Instruments, Inc.
    Inventors: Azzedine Hammiche, Hubert Murray Montagu-Pollock, Michael Reading, Mo Song
  • Patent number: 6260997
    Abstract: A sample and a scanning probe microscope system are used as the detector for an infrared spectrometer to circumvent the diffraction limit of conventional infrared microscopy, and to provide spectroscopic images with a greatly improved spatial resolution, potentially as low as a few tens of nanometers. The beam from an infrared spectrometer is directed at the sample. The sample is heated to the extent that it absorbs infrared radiation. Thus the resulting temperature rise of an individual region depends upon the particular molecular species present, as well as the range of wavelengths of the infrared beam. These individual temperature differences are detected by a miniature thermal probe. The thermal probe is mounted in a scanning thermal microscope. The scanning thermal microscope is then operated used to produce multiple surface and sub-surface images of the sample, such that the image contrast corresponds to variations in either thermal diffusivity, surface topography or chemical composition.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: July 17, 2001
    Inventors: Michael Claybourn, Azzedine Hammiche, Hubert Murray Montagu-Pollock, Michael Reading
  • Patent number: 6200022
    Abstract: A system and method for performing localized mechanothermal analysis with scanning probe microscopy (“MASM”) is disclosed. In a preferred embodiment an image of the surface or subsurface of a sample is created. A localized region of the sample is selected from the image. Using a scanning microscope, an active or passive thermal probe is positioned at the selected region. A temperature ramp is applied to the localized region. In addition, a dynamic or modulated stress or strain is applied to the localized region. Force data resulting from the applied temperature and stress or strain is collected and processed to produce a graph or fingerprint of the dynamic mechanical and/or calorimetric properties of the selected localized region.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: March 13, 2001
    Assignee: TA Instruments, Inc.
    Inventors: Azzedine Hammiche, Hubert Murray Montague-Pollock, Michael Reading
  • Patent number: 6095679
    Abstract: A platinum/Rhodium resistance thermal probe is used as an active device which acts both as a highly localized heat source and as a detector to perform localized differential calorimetry, by thermally inducing and detecting events such as glass transitions, meltings, recystallizations and thermal decomposition within volumes of material estimated at a few .mu.m.sup.3. Furthermore, the probe is used to image variations in thermal conductivity and diffusivity, to perform depth profiling and sub-surface imaging. The maximum depth of the sample that is imaged is controlled by generating and detecting evanescent temperature waves in the sample.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: August 1, 2000
    Assignee: TA Instruments
    Inventors: Azzedine Hammiche, Hubert Murray Montagu Pollock, Michael Reading, Mo Song