The Experts below are selected from a list of 267 Experts worldwide ranked by ideXlab platform

Junji Tominaga - One of the best experts on this subject based on the ideXlab platform.

  • on a thermally induced readout mechanism in super resolution Optical Disks
    Journal of Applied Physics, 2006
    Co-Authors: Masashi Kuwahara, Takayuki Shima, Paul Fons, Toshio Fukaya, Junji Tominaga
    Abstract:

    We have simultaneously measured the carrier-to-noise ratio (CNR) as well as the transmitted and reflected light intensities from platinum oxide based super-resolution near-field structure (PtOx super-RENS) Disks. The the reflected and transmitted light intensities were found to decrease and increase, respectively, as the CNR value increased. The phase-change material AgInSbTe (AIST) used in PtOx super-RENS Disks was found to exhibit a strong Optical nonlinearity with respect to readout laser power. AIST becomes transparent at higher laser powers. To ascertain whether the presence of Pt nanoparticles is important to the readout mechanism, a super-RENS disk was fabricated in which the PtOx layer was replaced with a metal-free phthalocyanine (H2Pc) layer and the CNR of the H2Pc disk was measured. From the observation that the CNR value was equivalent to that of a disk made using PtOx, we conclude that the presence of nanoparticles does not play an important role in the super-RENS readout mechanism. Finally, ...

  • transmitted signal detection of Optical Disks with a superresolution near field structure
    Applied Physics Letters, 1999
    Co-Authors: Takashi Nakano, Junji Tominaga, Akira Sato, Hiroshi Fuji, Nobufumi Atoda
    Abstract:

    We observed transmitted signals of phase change marks recorded in super-resolution near-field structure (super-RENS) Disks under high speed disk rotation. The observed minimum mark size was 81 nm and the carrier to noise ratio was about 6 dB at a constant linear velocity of 4.8 m/s. The mark size was far beyond the diffraction limit of an Optical pickup with a wavelength of 635 nm and a numerical aperture of 0.6. It was clear that near-field scattering actually occurred in super-RENS Disks.

Scott Martell Boyette - One of the best experts on this subject based on the ideXlab platform.

  • theory and practice of ubiquitous quantitative chemical analysis using conventional computer Optical disk drives
    Applied Optics, 2007
    Co-Authors: R. A. Potyrailo, William G. Morris, A.m. Leach, L. Hassib, K. Krishnan, Cheryl Margaret Surman, R. Wroczynski, Scott Martell Boyette, Caibin Xiao, Prashant Vishwanath Shrikhande
    Abstract:

    We demonstrate a new attractive approach for ubiquitous quantitative chemical or biological sensing when analog signals are acquired from conventional Optical disk drives, and these signals are used for quantitative detection of Optical changes of sensing films deposited on conventional CD and DVD Optical Disks. Our developed analytical model of the operation of this Lab-on-DVD system describes the Optical response of sensing films deposited onto the read surface of Optical Disks by taking into account the practical aspects of system performance that include possible reagent leaching effects, water sampling (delivering) efficiency, and possible changes of the film morphology after water removal. By applying a screen-printing process, we demonstrated a laboratory-scale automated production of sensing films with an average thickness of ∼10 μm and a thickness relative standard deviation of <3% across multiple films. Finally, we developed a system for delivery of water-sample volumes to sensing films on the disk that utilized a multifunctional jewel case assembly.

  • Theory and practice of ubiquitous quantitative chemical analysis using conventional computer Optical disk drives.
    Applied optics, 2007
    Co-Authors: R. A. Potyrailo, William G. Morris, A.m. Leach, L. Hassib, K. Krishnan, Cheryl Margaret Surman, R. Wroczynski, Scott Martell Boyette, Caibin Xiao, Prashant Vishwanath Shrikhande
    Abstract:

    We demonstrate a new attractive approach for ubiquitous quantitative chemical or biological sensing when analog signals are acquired from conventional Optical disk drives, and these signals are used for quantitative detection of Optical changes of sensing films deposited on conventional CD and DVD Optical Disks. Our developed analytical model of the operation of this Lab-on-DVD system describes the Optical response of sensing films deposited onto the read surface of Optical Disks by taking into account the practical aspects of system performance that include possible reagent leaching effects, water sampling (delivering) efficiency, and possible changes of the film morphology after water removal. By applying a screen-printing process, we demonstrated a laboratory-scale automated production of sensing films with an average thickness of approximately 10 microm and a thickness relative standard deviation of

  • analog signal acquisition from computer Optical disk drives for quantitative chemical sensing
    Analytical Chemistry, 2006
    Co-Authors: R. A. Potyrailo, William G. Morris, A.m. Leach, Timothy Mark Sivavec, Marc Brian Wisnudel, Scott Martell Boyette
    Abstract:

    Optoelectronic consumer products that are widely employed in the office and home attract attention for Optical sensor applications due to (1) their cost advantage over analytical instruments produced only in small quantities, (2) robustness in operation due to the detailed manufacturability improvements, and (3) ease of operation. We demonstrate here a new approach for quantitative chemical/biochemical sensing when analog signals are acquired from conventional Optical disk drives, and these signals are used for quantitative detection of Optical changes of sensor films deposited on conventional CD and DVD Optical Disks. Because we do not alter manufacturing process of Optical Disks, any disk can be employed for deposition and readout of sensor films. The Optical disk drives also perform their original function of reading and writing digital content to Optical media because no Optical modifications are introduced to obtain the analog signal. Such a sensor platform is quite universal and can be applied for c...

R. A. Potyrailo - One of the best experts on this subject based on the ideXlab platform.

  • theory and practice of ubiquitous quantitative chemical analysis using conventional computer Optical disk drives
    Applied Optics, 2007
    Co-Authors: R. A. Potyrailo, William G. Morris, A.m. Leach, L. Hassib, K. Krishnan, Cheryl Margaret Surman, R. Wroczynski, Scott Martell Boyette, Caibin Xiao, Prashant Vishwanath Shrikhande
    Abstract:

    We demonstrate a new attractive approach for ubiquitous quantitative chemical or biological sensing when analog signals are acquired from conventional Optical disk drives, and these signals are used for quantitative detection of Optical changes of sensing films deposited on conventional CD and DVD Optical Disks. Our developed analytical model of the operation of this Lab-on-DVD system describes the Optical response of sensing films deposited onto the read surface of Optical Disks by taking into account the practical aspects of system performance that include possible reagent leaching effects, water sampling (delivering) efficiency, and possible changes of the film morphology after water removal. By applying a screen-printing process, we demonstrated a laboratory-scale automated production of sensing films with an average thickness of ∼10 μm and a thickness relative standard deviation of <3% across multiple films. Finally, we developed a system for delivery of water-sample volumes to sensing films on the disk that utilized a multifunctional jewel case assembly.

  • Theory and practice of ubiquitous quantitative chemical analysis using conventional computer Optical disk drives.
    Applied optics, 2007
    Co-Authors: R. A. Potyrailo, William G. Morris, A.m. Leach, L. Hassib, K. Krishnan, Cheryl Margaret Surman, R. Wroczynski, Scott Martell Boyette, Caibin Xiao, Prashant Vishwanath Shrikhande
    Abstract:

    We demonstrate a new attractive approach for ubiquitous quantitative chemical or biological sensing when analog signals are acquired from conventional Optical disk drives, and these signals are used for quantitative detection of Optical changes of sensing films deposited on conventional CD and DVD Optical Disks. Our developed analytical model of the operation of this Lab-on-DVD system describes the Optical response of sensing films deposited onto the read surface of Optical Disks by taking into account the practical aspects of system performance that include possible reagent leaching effects, water sampling (delivering) efficiency, and possible changes of the film morphology after water removal. By applying a screen-printing process, we demonstrated a laboratory-scale automated production of sensing films with an average thickness of approximately 10 microm and a thickness relative standard deviation of

  • analog signal acquisition from computer Optical disk drives for quantitative chemical sensing
    Analytical Chemistry, 2006
    Co-Authors: R. A. Potyrailo, William G. Morris, A.m. Leach, Timothy Mark Sivavec, Marc Brian Wisnudel, Scott Martell Boyette
    Abstract:

    Optoelectronic consumer products that are widely employed in the office and home attract attention for Optical sensor applications due to (1) their cost advantage over analytical instruments produced only in small quantities, (2) robustness in operation due to the detailed manufacturability improvements, and (3) ease of operation. We demonstrate here a new approach for quantitative chemical/biochemical sensing when analog signals are acquired from conventional Optical disk drives, and these signals are used for quantitative detection of Optical changes of sensor films deposited on conventional CD and DVD Optical Disks. Because we do not alter manufacturing process of Optical Disks, any disk can be employed for deposition and readout of sensor films. The Optical disk drives also perform their original function of reading and writing digital content to Optical media because no Optical modifications are introduced to obtain the analog signal. Such a sensor platform is quite universal and can be applied for c...

F. Koyama - One of the best experts on this subject based on the ideXlab platform.

  • Advances in vertical-cavity surface-emitting laser
    18th Congress of the International Commission for Optics, 1999
    Co-Authors: F. Koyama
    Abstract:

    The vertical cavity surface emitting laser (VCSEL) [lJ is meeting the 3rd generation of development in 1999 and the deadline of the S. Y. Wang's prophecy is approaching a few years ahead. Actually, it has been being applied into various Optical systems such as Optical networks, parallel Optical interconnects, laser printers, high density Optical Disks, and so on. We like to review the progress of VCSELs in wide spectral ranges covered by various 111-V compound semiconductors. Some innovating technologies will be discussed.

  • Advances in vertical-cavity surface-emitting laser
    18th Congress of the International Commission for Optics, 1999
    Co-Authors: F. Koyama
    Abstract:

    The vertical cavity surface emitting laser (VCSEL) [lJ is meeting the 3rd generation of development in 1999 and the deadline of the S. Y. Wang's prophecy is approaching a few years ahead. Actually, it has been being applied into various Optical systems such as Optical networks, parallel Optical interconnects, laser printers, high density Optical Disks, and so on. We like to review the progress of VCSELs in wide spectral ranges covered by various 111-V compound semiconductors. Some innovating technologies will be discussed.

Masashi Kuwahara - One of the best experts on this subject based on the ideXlab platform.

  • on a thermally induced readout mechanism in super resolution Optical Disks
    Journal of Applied Physics, 2006
    Co-Authors: Masashi Kuwahara, Takayuki Shima, Paul Fons, Toshio Fukaya, Junji Tominaga
    Abstract:

    We have simultaneously measured the carrier-to-noise ratio (CNR) as well as the transmitted and reflected light intensities from platinum oxide based super-resolution near-field structure (PtOx super-RENS) Disks. The the reflected and transmitted light intensities were found to decrease and increase, respectively, as the CNR value increased. The phase-change material AgInSbTe (AIST) used in PtOx super-RENS Disks was found to exhibit a strong Optical nonlinearity with respect to readout laser power. AIST becomes transparent at higher laser powers. To ascertain whether the presence of Pt nanoparticles is important to the readout mechanism, a super-RENS disk was fabricated in which the PtOx layer was replaced with a metal-free phthalocyanine (H2Pc) layer and the CNR of the H2Pc disk was measured. From the observation that the CNR value was equivalent to that of a disk made using PtOx, we conclude that the presence of nanoparticles does not play an important role in the super-RENS readout mechanism. Finally, ...