The Experts below are selected from a list of 7101 Experts worldwide ranked by ideXlab platform

Zahed Shami - One of the best experts on this subject based on the ideXlab platform.

  • a well designed three dimensional ternary hierarchical co axial zno zns heteroarchitecture decorated electrospun carbon Hollow Tube nanofibrous mat improved ultraviolet light photocatalytic performance
    CrystEngComm, 2014
    Co-Authors: Zahed Shami, Naser Sharifisanjani
    Abstract:

    A novel, efficient and versatile strategy was successfully developed to fabricate a well-designed three dimensional photocatalytic ternary hierarchical coaxial ZnO@ZnS heteroarchitecture decorated electrospun carbon Hollow Tube nanofibrous mat (ZnO@ZnS/C). Photocatalytic ternary coaxial ZnO@ZnS/C Hollow Tube mats showed an enhanced performance in the degradation of the pollutant methyl orange (MO), which may be attributed to the remarkable synergistic effect between ZnO, ZnS and graphitic carbon Hollow Tube fibers with a novel morphology and a unique porosity, where the ZnO and ZnS semiconductors act as improved ultraviolet-light absorbers and charge-transfer carriers, and the graphitic carbon Hollow Tube nanofibrous mats not only provide an appropriate porous support for the well-dispersed semiconductors, and for trapping of organic pollutants, but also act as an electron acceptor, which prolongs the electron lifetime of the excited semiconductor and decreases the recombination rate of the photo-induced electron–hole pairs. Improved efficiency and reusability in the degradation of MO dye makes the coaxial ZnO@ZnS/C Hollow heteroarchitectures a commercially promising candidate for the photocatalytic treatment of dye effluent.

  • A well-designed three-dimensional ternary hierarchical co-axial ZnO@ZnS heteroarchitecture decorated electrospun carbon Hollow Tube nanofibrous mat: improved ultraviolet-light photocatalytic performance
    CrystEngComm, 2014
    Co-Authors: Zahed Shami, Naser Sharifi-sanjani
    Abstract:

    A novel, efficient and versatile strategy was successfully developed to fabricate a well-designed three dimensional photocatalytic ternary hierarchical coaxial ZnO@ZnS heteroarchitecture decorated electrospun carbon Hollow Tube nanofibrous mat (ZnO@ZnS/C). Photocatalytic ternary coaxial ZnO@ZnS/C Hollow Tube mats showed an enhanced performance in the degradation of the pollutant methyl orange (MO), which may be attributed to the remarkable synergistic effect between ZnO, ZnS and graphitic carbon Hollow Tube fibers with a novel morphology and a unique porosity, where the ZnO and ZnS semiconductors act as improved ultraviolet-light absorbers and charge-transfer carriers, and the graphitic carbon Hollow Tube nanofibrous mats not only provide an appropriate porous support for the well-dispersed semiconductors, and for trapping of organic pollutants, but also act as an electron acceptor, which prolongs the electron lifetime of the excited semiconductor and decreases the recombination rate of the photo-induced electron–hole pairs. Improved efficiency and reusability in the degradation of MO dye makes the coaxial ZnO@ZnS/C Hollow heteroarchitectures a commercially promising candidate for the photocatalytic treatment of dye effluent.

Naser Sharifisanjani - One of the best experts on this subject based on the ideXlab platform.

  • a well designed three dimensional ternary hierarchical co axial zno zns heteroarchitecture decorated electrospun carbon Hollow Tube nanofibrous mat improved ultraviolet light photocatalytic performance
    CrystEngComm, 2014
    Co-Authors: Zahed Shami, Naser Sharifisanjani
    Abstract:

    A novel, efficient and versatile strategy was successfully developed to fabricate a well-designed three dimensional photocatalytic ternary hierarchical coaxial ZnO@ZnS heteroarchitecture decorated electrospun carbon Hollow Tube nanofibrous mat (ZnO@ZnS/C). Photocatalytic ternary coaxial ZnO@ZnS/C Hollow Tube mats showed an enhanced performance in the degradation of the pollutant methyl orange (MO), which may be attributed to the remarkable synergistic effect between ZnO, ZnS and graphitic carbon Hollow Tube fibers with a novel morphology and a unique porosity, where the ZnO and ZnS semiconductors act as improved ultraviolet-light absorbers and charge-transfer carriers, and the graphitic carbon Hollow Tube nanofibrous mats not only provide an appropriate porous support for the well-dispersed semiconductors, and for trapping of organic pollutants, but also act as an electron acceptor, which prolongs the electron lifetime of the excited semiconductor and decreases the recombination rate of the photo-induced electron–hole pairs. Improved efficiency and reusability in the degradation of MO dye makes the coaxial ZnO@ZnS/C Hollow heteroarchitectures a commercially promising candidate for the photocatalytic treatment of dye effluent.

Naser Sharifi-sanjani - One of the best experts on this subject based on the ideXlab platform.

  • A well-designed three-dimensional ternary hierarchical co-axial ZnO@ZnS heteroarchitecture decorated electrospun carbon Hollow Tube nanofibrous mat: improved ultraviolet-light photocatalytic performance
    CrystEngComm, 2014
    Co-Authors: Zahed Shami, Naser Sharifi-sanjani
    Abstract:

    A novel, efficient and versatile strategy was successfully developed to fabricate a well-designed three dimensional photocatalytic ternary hierarchical coaxial ZnO@ZnS heteroarchitecture decorated electrospun carbon Hollow Tube nanofibrous mat (ZnO@ZnS/C). Photocatalytic ternary coaxial ZnO@ZnS/C Hollow Tube mats showed an enhanced performance in the degradation of the pollutant methyl orange (MO), which may be attributed to the remarkable synergistic effect between ZnO, ZnS and graphitic carbon Hollow Tube fibers with a novel morphology and a unique porosity, where the ZnO and ZnS semiconductors act as improved ultraviolet-light absorbers and charge-transfer carriers, and the graphitic carbon Hollow Tube nanofibrous mats not only provide an appropriate porous support for the well-dispersed semiconductors, and for trapping of organic pollutants, but also act as an electron acceptor, which prolongs the electron lifetime of the excited semiconductor and decreases the recombination rate of the photo-induced electron–hole pairs. Improved efficiency and reusability in the degradation of MO dye makes the coaxial ZnO@ZnS/C Hollow heteroarchitectures a commercially promising candidate for the photocatalytic treatment of dye effluent.

Chih-kung Lee - One of the best experts on this subject based on the ideXlab platform.

  • Generating a sub-wavelength Bessel-like light beam using a tapered Hollow Tube.
    Optics letters, 2012
    Co-Authors: Chun-yen Chen, Yu-hsun Lee, Chih-jen Chien, Ming-han Chung, Te-hsun Chen, Chih-kung Lee
    Abstract:

    We present a series of sub-wavelength annular aperture (SAA) structures with annular width equal to the tip of a tapered Hollow Tube, which was fabricated using a heat-pulled method. The light beams emitted from the SAA-like structures created by the tapered Hollow Tube produced light beams characteristic of Bessel beams. We obtained a sub-micrometer focal spot with a depth-of-focus larger than 7 μm and identified the proper structure parameters needed to generate Bessel-like light beams. Our new design has potential application to areas such as optical lithography, optical trapping, and the fabrication of high aspect ratio structures.

  • Generating high DOF light by using tapered Hollow Tube in a lithography system
    Advanced Fabrication Technologies for Micro Nano Optics and Photonics V, 2012
    Co-Authors: Chun-yen Chen, Yu-hsun Lee, Chih-jen Chien, Chih-kung Lee
    Abstract:

    In this paper, we proposed a tapered Hollow Tube which can produce a near diffraction-limit spot and focus the incident light in far-field region. From previous researches, the sub-wavelength annular aperture (SAA) made on metallic film generates a Bessel beam in far-field region. Also, the traditional tapered fiber has been widely used in near-field scanning optical microscope (NSOM) to achieve super-resolution in near-field. Combining these two concepts, tapered Hollow Tube was shown to have great potential in creating a small sub-micron spot size and long depth of focus (DOF) emitted light beam. By using the commercially available capillary and fiber heat-pulling method, it was found that Tube processed per design to be disclosed in this paper can achieve Bessel beam as well. It will be shown that the SAA-like structure was actually implemented by the geometry of the Tube tip. From FDTD simulation and experiment, the emitted beam was identified to have more than 10 μm DOF and 250-300 nm focal spot excited by using the 408 nm laser source. These results not only can help us pursue lithography applied to create through silicon via (TSV) process in far-field region while maintaining near diffraction-limit spot size. The high throughput and side lobe became a serious problem when continuous incident light was used. To circumvent this problem, the incident light from was changed from continuous to pulse type and a suitable lithography experimental system designed by using three-axis displacement platform was developed. All results will be detailed in this paper.

Chun-yen Chen - One of the best experts on this subject based on the ideXlab platform.

  • Generating a sub-wavelength Bessel-like light beam using a tapered Hollow Tube.
    Optics letters, 2012
    Co-Authors: Chun-yen Chen, Yu-hsun Lee, Chih-jen Chien, Ming-han Chung, Te-hsun Chen, Chih-kung Lee
    Abstract:

    We present a series of sub-wavelength annular aperture (SAA) structures with annular width equal to the tip of a tapered Hollow Tube, which was fabricated using a heat-pulled method. The light beams emitted from the SAA-like structures created by the tapered Hollow Tube produced light beams characteristic of Bessel beams. We obtained a sub-micrometer focal spot with a depth-of-focus larger than 7 μm and identified the proper structure parameters needed to generate Bessel-like light beams. Our new design has potential application to areas such as optical lithography, optical trapping, and the fabrication of high aspect ratio structures.

  • Generating high DOF light by using tapered Hollow Tube in a lithography system
    Advanced Fabrication Technologies for Micro Nano Optics and Photonics V, 2012
    Co-Authors: Chun-yen Chen, Yu-hsun Lee, Chih-jen Chien, Chih-kung Lee
    Abstract:

    In this paper, we proposed a tapered Hollow Tube which can produce a near diffraction-limit spot and focus the incident light in far-field region. From previous researches, the sub-wavelength annular aperture (SAA) made on metallic film generates a Bessel beam in far-field region. Also, the traditional tapered fiber has been widely used in near-field scanning optical microscope (NSOM) to achieve super-resolution in near-field. Combining these two concepts, tapered Hollow Tube was shown to have great potential in creating a small sub-micron spot size and long depth of focus (DOF) emitted light beam. By using the commercially available capillary and fiber heat-pulling method, it was found that Tube processed per design to be disclosed in this paper can achieve Bessel beam as well. It will be shown that the SAA-like structure was actually implemented by the geometry of the Tube tip. From FDTD simulation and experiment, the emitted beam was identified to have more than 10 μm DOF and 250-300 nm focal spot excited by using the 408 nm laser source. These results not only can help us pursue lithography applied to create through silicon via (TSV) process in far-field region while maintaining near diffraction-limit spot size. The high throughput and side lobe became a serious problem when continuous incident light was used. To circumvent this problem, the incident light from was changed from continuous to pulse type and a suitable lithography experimental system designed by using three-axis displacement platform was developed. All results will be detailed in this paper.