Abstract:
Methods for detection of the presence and distribution of oil in subsurface formation are described herein. The present invention involves injection of an aqueous dispersion of the nanoparticles into the potentially oil containing subsurface formation, followed by a remote detection of the oscillation responses of the nanoparticles in the oil/water interfaces in the reservoir rock by applying magnetic field.
Abstract:
A polarization sensitive spectral interferometer apparatus and method for analyzing a sample. The polarization sensitive spectral interferometer apparatus and method determines polarization properties of the sample.
Abstract:
Certain embodiments are directed to methods and apparatus for ultrafast MWP-OCT that is based on precise of the OCT tunable-laser source combined with synchronization of the photothermal excitation laser emission.
Abstract:
The present invention relates to a rotating catheter tip for optical coherence tomography based on the use of an optical fiber that does not rotate, that is enclosed in a catheter, which has a tip rotates under the influence of a fluid drive system to redirect light from the fiber to a surrounding vessel and the light reflected or backscattered from the vessel back to the optical fiber.
Abstract:
Disclosed are improved methods and compositions for use in light-based in vivo imaging and treatment. The techniques described involve the use of low-scattering, oxygen-~carrying blood substitutes in imaging and treatment methods, including OCT imaging. The invention has particular advantages in imaging within the cardiovascular system and highly vascularized or oxygen-dependent tissues.
Abstract:
The probe (100) comprises a conduit (110) through which energy is transmitted having a first portion (120) through which the conduit (110) extends and a second portion (130) which rotates relative to conduit (110) to redirect the energy from the conduit (110).
Abstract:
One form of the present invention is a dual channel optical reflectometer composed of four separate paths (100, 102, 104 and 106), interconnected through a path coupler (108). The source path (100), optically connected to the path coupler (108), is comprised of a light source (110) that is optically coupled to a birefringent optical fiber (112). A depolarizer (114) is placed in-line in the optical fiber (112) and is of sufficient length (116) to insure complete decorrelation with independent phase components that are separated by virtue of the birefringent nature of the optical fiber (112). The reference path (102) is comprised of another birefringent optical fiber (118) that is optically connected to the path coupler (108) on one end, and has the other end optically aligned with a collimating lens (120) that collimates the light emitted from the second end of optical fiber (118) into a scanning delay line (122).
Abstract:
In one embodiment the present invention discloses a nanocluster or a nanorose composition comprising two or more closely spaced nanoparticles each comprising one or more metals, metal oxides, inorganic substances, or a combination thereof and one or more stabilizers. The stabilizers are in contact with the two or more closely spaced nanoparticles to form a nanocluster composition in which the inorganic weight percentage is greater than 50% and the average size is below 300 nm, and the nanocluster composition has magnetic properties, optical properties or a combination of both.