The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform

Seunghyun Baik - One of the best experts on this subject based on the ideXlab platform.

  • Extraordinarily high conductivity of Flexible Adhesive films by hybrids of silver nanoparticle-nanowires.
    Nanotechnology, 2016
    Co-Authors: C. Muhammed Ajmal, Hyouk Ryeol Choi, Mini Mol Menamparambath, Seunghyun Baik
    Abstract:

    Highly conductive Flexible Adhesive (CFA) film was developed using micro-sized silver flakes (primary fillers), hybrids of silver nanoparticle–nanowires (secondary fillers) and nitrile butadiene rubber. The hybrids of silver nanoparticle–nanowires were synthesized by decorating silver nanowires with silver nanoparticle clusters using bifunctional cysteamine as a linker. The dispersion in ethanol was excellent for several months. Silver nanowires constructed electrical networks between the micro-scale silver flakes. The low-temperature surface sintering of silver nanoparticles enabled effective joining of silver nanowires to silver flakes. The hybrids of silver nanoparticle–nanowires provided a greater maximum conductivity (54 390 S cm−1) than pure silver nanowires, pure multiwalled carbon nanotubes, and multiwalled carbon nanotubes decorated with silver nanoparticles in nitrile butadiene rubber matrix. The resistance change was smallest upon bending when the hybrids of silver nanoparticle–nanowires were employed. The adhesion of the film on polyethylene terephthalate substrate was excellent. Light emitting diodes were successfully wired to the CFA circuit patterned by the screen printing method for application demonstration.

  • Flexible electromagnetic interference shields made of silver flakes, carbon nanotubes and nitrile butadiene rubber
    Carbon, 2014
    Co-Authors: Seoyoung Kwon, Rujun Ma, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    Abstract The recent advances in portable and Flexible electronic devices demand integration of flexibility into future electromagnetic interference shielding materials. Here we synthesized Flexible Adhesive shields made of microscale silver flakes (Ag flakes), multi-walled carbon nanotubes decorated with nanoscale silver particles (nAg-MWNTs), and nitrile butadiene rubber (NBR). The addition of nAg-MWNTs into the Ag flake–NBR mixture significantly enhanced both conductivity and shielding effectiveness. Long nanotubes electrically linked microscale Ag flakes embedded in the NBR matrix, and nanoscale silver particles further improved the contact interface. There was a logarithmic relationship between the conductivity and shielding effectiveness. The dominant mechanism of electromagnetic interference shielding was reflection. The achieved maximum shielding effectiveness was about ∼75 dB at 1 GHz. The Flexible Adhesive shield printed on a polyimide film was wrapped around a cylindrical rod with a radius of 4 mm. The shielding effectiveness decreased about 20% after 100 wrapping cycles. The conductivity and shielding effectiveness could be adjusted by changing the Ag flake concentration. There was an excellent agreement between the theoretically predicted shielding effectiveness and the experimental data.

  • Flexible electromagnetic interference shields made of silver flakes, carbon nanotubes and nitrile butadiene rubber
    Carbon, 2014
    Co-Authors: Seoyoung Kwon, Rujun Ma, Uikyum Kim, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    The recent advances in portable and Flexible electronic devices demand integration of flexibility into future electromagnetic interference shielding materials. Here we synthesized Flexible Adhesive shields made of microscale silver flakes (Ag flakes), multi-walled carbon nanotubes decorated with nanoscale silver particles (nAg-MWNTs), and nitrile butadiene rubber (NBR). The addition of nAg-MWNTs into the Ag flake-NBR mixture significantly enhanced both conductivity and shielding effectiveness. Long nanotubes electrically linked microscale Ag flakes embedded in the NBR matrix, and nanoscale silver particles further improved the contact interface. There was a logarithmic relationship between the conductivity and shielding effectiveness. The dominant mechanism of electromagnetic interference shielding was reflection. The achieved maximum shielding effectiveness was about ∼75 dB at 1 GHz. The Flexible Adhesive shield printed on a polyimide film was wrapped around a cylindrical rod with a radius of 4 mm. The shielding effectiveness decreased about 20% after 100 wrapping cycles. The conductivity and shielding effectiveness could be adjusted by changing the Ag flake concentration. There was an excellent agreement between the theoretically predicted shielding effectiveness and the experimental data. © 2013 Elsevier Ltd. All rights reserved.

  • Carbon‐Nanotube/Silver Networks in Nitrile Butadiene Rubber for Highly Conductive Flexible Adhesives
    Advanced Materials, 2012
    Co-Authors: Rujun Ma, Seoyoung Kwon, Hyeok Yong Kwon, Qing Zheng, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    : An Adhesive with high conductivity, flexibility, cyclability, oxidation resistance, and good adhesion is developed using microscale silver flakes, multiwalled carbon nanotubes decorated with nanoscale silver particles, and nitrile butadiene rubber. Light-emitting-diode chips are attached to the conductive, Flexible Adhesive pattern on a poly(ethylene terephthalate) substrate as a visual demonstration. The brightness is invariant during bending tests.

  • Carbon-nanotube/silver networks in nitrile butadiene rubber for highly conductive Flexible Adhesives
    Advanced Materials, 2012
    Co-Authors: Rujun Ma, Seoyoung Kwon, Jae Il Kim, Hyeok Yong Kwon, Qing Zheng, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    An Adhesive with high conductivity, flexibility, cyclability, oxidation resistance, and good adhesion is developed using microscale silver flakes, multiwalled carbon nanotubes decorated with nanoscale silver particles, and nitrile butadiene rubber. Light-emitting-diode chips are attached to the conductive, Flexible Adhesive pattern on a poly(ethylene terephthalate) substrate as a visual demonstration. The brightness is invariant during bending tests.

Seoyoung Kwon - One of the best experts on this subject based on the ideXlab platform.

  • Flexible electromagnetic interference shields made of silver flakes, carbon nanotubes and nitrile butadiene rubber
    Carbon, 2014
    Co-Authors: Seoyoung Kwon, Rujun Ma, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    Abstract The recent advances in portable and Flexible electronic devices demand integration of flexibility into future electromagnetic interference shielding materials. Here we synthesized Flexible Adhesive shields made of microscale silver flakes (Ag flakes), multi-walled carbon nanotubes decorated with nanoscale silver particles (nAg-MWNTs), and nitrile butadiene rubber (NBR). The addition of nAg-MWNTs into the Ag flake–NBR mixture significantly enhanced both conductivity and shielding effectiveness. Long nanotubes electrically linked microscale Ag flakes embedded in the NBR matrix, and nanoscale silver particles further improved the contact interface. There was a logarithmic relationship between the conductivity and shielding effectiveness. The dominant mechanism of electromagnetic interference shielding was reflection. The achieved maximum shielding effectiveness was about ∼75 dB at 1 GHz. The Flexible Adhesive shield printed on a polyimide film was wrapped around a cylindrical rod with a radius of 4 mm. The shielding effectiveness decreased about 20% after 100 wrapping cycles. The conductivity and shielding effectiveness could be adjusted by changing the Ag flake concentration. There was an excellent agreement between the theoretically predicted shielding effectiveness and the experimental data.

  • Flexible electromagnetic interference shields made of silver flakes, carbon nanotubes and nitrile butadiene rubber
    Carbon, 2014
    Co-Authors: Seoyoung Kwon, Rujun Ma, Uikyum Kim, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    The recent advances in portable and Flexible electronic devices demand integration of flexibility into future electromagnetic interference shielding materials. Here we synthesized Flexible Adhesive shields made of microscale silver flakes (Ag flakes), multi-walled carbon nanotubes decorated with nanoscale silver particles (nAg-MWNTs), and nitrile butadiene rubber (NBR). The addition of nAg-MWNTs into the Ag flake-NBR mixture significantly enhanced both conductivity and shielding effectiveness. Long nanotubes electrically linked microscale Ag flakes embedded in the NBR matrix, and nanoscale silver particles further improved the contact interface. There was a logarithmic relationship between the conductivity and shielding effectiveness. The dominant mechanism of electromagnetic interference shielding was reflection. The achieved maximum shielding effectiveness was about ∼75 dB at 1 GHz. The Flexible Adhesive shield printed on a polyimide film was wrapped around a cylindrical rod with a radius of 4 mm. The shielding effectiveness decreased about 20% after 100 wrapping cycles. The conductivity and shielding effectiveness could be adjusted by changing the Ag flake concentration. There was an excellent agreement between the theoretically predicted shielding effectiveness and the experimental data. © 2013 Elsevier Ltd. All rights reserved.

  • Carbon‐Nanotube/Silver Networks in Nitrile Butadiene Rubber for Highly Conductive Flexible Adhesives
    Advanced Materials, 2012
    Co-Authors: Rujun Ma, Seoyoung Kwon, Hyeok Yong Kwon, Qing Zheng, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    : An Adhesive with high conductivity, flexibility, cyclability, oxidation resistance, and good adhesion is developed using microscale silver flakes, multiwalled carbon nanotubes decorated with nanoscale silver particles, and nitrile butadiene rubber. Light-emitting-diode chips are attached to the conductive, Flexible Adhesive pattern on a poly(ethylene terephthalate) substrate as a visual demonstration. The brightness is invariant during bending tests.

  • Carbon-nanotube/silver networks in nitrile butadiene rubber for highly conductive Flexible Adhesives
    Advanced Materials, 2012
    Co-Authors: Rujun Ma, Seoyoung Kwon, Jae Il Kim, Hyeok Yong Kwon, Qing Zheng, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    An Adhesive with high conductivity, flexibility, cyclability, oxidation resistance, and good adhesion is developed using microscale silver flakes, multiwalled carbon nanotubes decorated with nanoscale silver particles, and nitrile butadiene rubber. Light-emitting-diode chips are attached to the conductive, Flexible Adhesive pattern on a poly(ethylene terephthalate) substrate as a visual demonstration. The brightness is invariant during bending tests.

Hyouk Ryeol Choi - One of the best experts on this subject based on the ideXlab platform.

  • Extraordinarily high conductivity of Flexible Adhesive films by hybrids of silver nanoparticle-nanowires.
    Nanotechnology, 2016
    Co-Authors: C. Muhammed Ajmal, Hyouk Ryeol Choi, Mini Mol Menamparambath, Seunghyun Baik
    Abstract:

    Highly conductive Flexible Adhesive (CFA) film was developed using micro-sized silver flakes (primary fillers), hybrids of silver nanoparticle–nanowires (secondary fillers) and nitrile butadiene rubber. The hybrids of silver nanoparticle–nanowires were synthesized by decorating silver nanowires with silver nanoparticle clusters using bifunctional cysteamine as a linker. The dispersion in ethanol was excellent for several months. Silver nanowires constructed electrical networks between the micro-scale silver flakes. The low-temperature surface sintering of silver nanoparticles enabled effective joining of silver nanowires to silver flakes. The hybrids of silver nanoparticle–nanowires provided a greater maximum conductivity (54 390 S cm−1) than pure silver nanowires, pure multiwalled carbon nanotubes, and multiwalled carbon nanotubes decorated with silver nanoparticles in nitrile butadiene rubber matrix. The resistance change was smallest upon bending when the hybrids of silver nanoparticle–nanowires were employed. The adhesion of the film on polyethylene terephthalate substrate was excellent. Light emitting diodes were successfully wired to the CFA circuit patterned by the screen printing method for application demonstration.

  • Flexible electromagnetic interference shields made of silver flakes, carbon nanotubes and nitrile butadiene rubber
    Carbon, 2014
    Co-Authors: Seoyoung Kwon, Rujun Ma, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    Abstract The recent advances in portable and Flexible electronic devices demand integration of flexibility into future electromagnetic interference shielding materials. Here we synthesized Flexible Adhesive shields made of microscale silver flakes (Ag flakes), multi-walled carbon nanotubes decorated with nanoscale silver particles (nAg-MWNTs), and nitrile butadiene rubber (NBR). The addition of nAg-MWNTs into the Ag flake–NBR mixture significantly enhanced both conductivity and shielding effectiveness. Long nanotubes electrically linked microscale Ag flakes embedded in the NBR matrix, and nanoscale silver particles further improved the contact interface. There was a logarithmic relationship between the conductivity and shielding effectiveness. The dominant mechanism of electromagnetic interference shielding was reflection. The achieved maximum shielding effectiveness was about ∼75 dB at 1 GHz. The Flexible Adhesive shield printed on a polyimide film was wrapped around a cylindrical rod with a radius of 4 mm. The shielding effectiveness decreased about 20% after 100 wrapping cycles. The conductivity and shielding effectiveness could be adjusted by changing the Ag flake concentration. There was an excellent agreement between the theoretically predicted shielding effectiveness and the experimental data.

  • Flexible electromagnetic interference shields made of silver flakes, carbon nanotubes and nitrile butadiene rubber
    Carbon, 2014
    Co-Authors: Seoyoung Kwon, Rujun Ma, Uikyum Kim, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    The recent advances in portable and Flexible electronic devices demand integration of flexibility into future electromagnetic interference shielding materials. Here we synthesized Flexible Adhesive shields made of microscale silver flakes (Ag flakes), multi-walled carbon nanotubes decorated with nanoscale silver particles (nAg-MWNTs), and nitrile butadiene rubber (NBR). The addition of nAg-MWNTs into the Ag flake-NBR mixture significantly enhanced both conductivity and shielding effectiveness. Long nanotubes electrically linked microscale Ag flakes embedded in the NBR matrix, and nanoscale silver particles further improved the contact interface. There was a logarithmic relationship between the conductivity and shielding effectiveness. The dominant mechanism of electromagnetic interference shielding was reflection. The achieved maximum shielding effectiveness was about ∼75 dB at 1 GHz. The Flexible Adhesive shield printed on a polyimide film was wrapped around a cylindrical rod with a radius of 4 mm. The shielding effectiveness decreased about 20% after 100 wrapping cycles. The conductivity and shielding effectiveness could be adjusted by changing the Ag flake concentration. There was an excellent agreement between the theoretically predicted shielding effectiveness and the experimental data. © 2013 Elsevier Ltd. All rights reserved.

  • Carbon‐Nanotube/Silver Networks in Nitrile Butadiene Rubber for Highly Conductive Flexible Adhesives
    Advanced Materials, 2012
    Co-Authors: Rujun Ma, Seoyoung Kwon, Hyeok Yong Kwon, Qing Zheng, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    : An Adhesive with high conductivity, flexibility, cyclability, oxidation resistance, and good adhesion is developed using microscale silver flakes, multiwalled carbon nanotubes decorated with nanoscale silver particles, and nitrile butadiene rubber. Light-emitting-diode chips are attached to the conductive, Flexible Adhesive pattern on a poly(ethylene terephthalate) substrate as a visual demonstration. The brightness is invariant during bending tests.

  • Carbon-nanotube/silver networks in nitrile butadiene rubber for highly conductive Flexible Adhesives
    Advanced Materials, 2012
    Co-Authors: Rujun Ma, Seoyoung Kwon, Jae Il Kim, Hyeok Yong Kwon, Qing Zheng, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    An Adhesive with high conductivity, flexibility, cyclability, oxidation resistance, and good adhesion is developed using microscale silver flakes, multiwalled carbon nanotubes decorated with nanoscale silver particles, and nitrile butadiene rubber. Light-emitting-diode chips are attached to the conductive, Flexible Adhesive pattern on a poly(ethylene terephthalate) substrate as a visual demonstration. The brightness is invariant during bending tests.

Rujun Ma - One of the best experts on this subject based on the ideXlab platform.

  • Flexible electromagnetic interference shields made of silver flakes, carbon nanotubes and nitrile butadiene rubber
    Carbon, 2014
    Co-Authors: Seoyoung Kwon, Rujun Ma, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    Abstract The recent advances in portable and Flexible electronic devices demand integration of flexibility into future electromagnetic interference shielding materials. Here we synthesized Flexible Adhesive shields made of microscale silver flakes (Ag flakes), multi-walled carbon nanotubes decorated with nanoscale silver particles (nAg-MWNTs), and nitrile butadiene rubber (NBR). The addition of nAg-MWNTs into the Ag flake–NBR mixture significantly enhanced both conductivity and shielding effectiveness. Long nanotubes electrically linked microscale Ag flakes embedded in the NBR matrix, and nanoscale silver particles further improved the contact interface. There was a logarithmic relationship between the conductivity and shielding effectiveness. The dominant mechanism of electromagnetic interference shielding was reflection. The achieved maximum shielding effectiveness was about ∼75 dB at 1 GHz. The Flexible Adhesive shield printed on a polyimide film was wrapped around a cylindrical rod with a radius of 4 mm. The shielding effectiveness decreased about 20% after 100 wrapping cycles. The conductivity and shielding effectiveness could be adjusted by changing the Ag flake concentration. There was an excellent agreement between the theoretically predicted shielding effectiveness and the experimental data.

  • Flexible electromagnetic interference shields made of silver flakes, carbon nanotubes and nitrile butadiene rubber
    Carbon, 2014
    Co-Authors: Seoyoung Kwon, Rujun Ma, Uikyum Kim, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    The recent advances in portable and Flexible electronic devices demand integration of flexibility into future electromagnetic interference shielding materials. Here we synthesized Flexible Adhesive shields made of microscale silver flakes (Ag flakes), multi-walled carbon nanotubes decorated with nanoscale silver particles (nAg-MWNTs), and nitrile butadiene rubber (NBR). The addition of nAg-MWNTs into the Ag flake-NBR mixture significantly enhanced both conductivity and shielding effectiveness. Long nanotubes electrically linked microscale Ag flakes embedded in the NBR matrix, and nanoscale silver particles further improved the contact interface. There was a logarithmic relationship between the conductivity and shielding effectiveness. The dominant mechanism of electromagnetic interference shielding was reflection. The achieved maximum shielding effectiveness was about ∼75 dB at 1 GHz. The Flexible Adhesive shield printed on a polyimide film was wrapped around a cylindrical rod with a radius of 4 mm. The shielding effectiveness decreased about 20% after 100 wrapping cycles. The conductivity and shielding effectiveness could be adjusted by changing the Ag flake concentration. There was an excellent agreement between the theoretically predicted shielding effectiveness and the experimental data. © 2013 Elsevier Ltd. All rights reserved.

  • Carbon‐Nanotube/Silver Networks in Nitrile Butadiene Rubber for Highly Conductive Flexible Adhesives
    Advanced Materials, 2012
    Co-Authors: Rujun Ma, Seoyoung Kwon, Hyeok Yong Kwon, Qing Zheng, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    : An Adhesive with high conductivity, flexibility, cyclability, oxidation resistance, and good adhesion is developed using microscale silver flakes, multiwalled carbon nanotubes decorated with nanoscale silver particles, and nitrile butadiene rubber. Light-emitting-diode chips are attached to the conductive, Flexible Adhesive pattern on a poly(ethylene terephthalate) substrate as a visual demonstration. The brightness is invariant during bending tests.

  • Carbon-nanotube/silver networks in nitrile butadiene rubber for highly conductive Flexible Adhesives
    Advanced Materials, 2012
    Co-Authors: Rujun Ma, Seoyoung Kwon, Jae Il Kim, Hyeok Yong Kwon, Qing Zheng, Hyouk Ryeol Choi, Seunghyun Baik
    Abstract:

    An Adhesive with high conductivity, flexibility, cyclability, oxidation resistance, and good adhesion is developed using microscale silver flakes, multiwalled carbon nanotubes decorated with nanoscale silver particles, and nitrile butadiene rubber. Light-emitting-diode chips are attached to the conductive, Flexible Adhesive pattern on a poly(ethylene terephthalate) substrate as a visual demonstration. The brightness is invariant during bending tests.

David Jones - One of the best experts on this subject based on the ideXlab platform.

  • Natural cunning
    Nature, 2000
    Co-Authors: David Jones
    Abstract:

    The microstructure of natural materials such as bone and wood makes them strong and tough. Chemists are also good at crystallizing fine particles, but a Flexible Adhesive is needed to bind them together. Daedalus thinks he has the answer.