Browsing by Author Nguyen, Quoc Hung

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  • Authors: Nguyen, Quoc Hung (2003)

  • The 20th century has passed by into the shadow of the past; however the century has leftmemorable imprints with extraordinary progresses, wonderful achievements, great changes and even surprising overturns. In that great century, East Asia has made its presence in many aspects and dimensions. This short article only looks at East Asia from the angle of its relation to the world politics of the 20th century…

  • 258.pdf.jpg
  • Article


  • Authors: Nguyen, Quoc Hung; Nguyen, Quang Bau (2002)

  • Based on the quantum kinetic equation for phonon, the amplification of sound (acoustic phonons) due to the absorption of laser radiation in cylindrical quantum wires with parabolic potential in the presence of m agnetic field is studied. Analytical expressions for the rate of acoustic phonons excitations, the conditions for the amplification of sound and the momentum conditions for electron to participate in the amplification of sound are obtained for the two cases: singlephoton absorption process and multiphoton absorption process. The differences between the two cases of singlephoton absorption and m ultiphoton absorption are discussed; the numerical computations and plots are car...

  • Selected-area-growth-of-nickel-micropillars-on-aluminum-thin-films-by-electroless-plating-for-applications-in-microbolometers_2017_Journal-of-Science-.pdf.jpg
  • Article


  • Authors: Do, Ngoc Hieu; Dang, Nguyen Ha My; Vu, Thi Thu; Nguyen, Quoc Hung; Do, Ngoc Chung; Nguyen, Tran Thuat (2017)

  • An optimization process of electroless plating of nickel was carried out with NiCl2as the nickel ion source, NaH2PO2as the reduction agent, CH3COONa and Na3C6H5O7as complexing agents. Electroless plated nickel layers on sputtered aluminum corning glass substrates with a resistivity of about 75.9mUcm and a nickel concentration higher than 93% were obtained. This optimum process was successfully applied in growing nickel micropillars at selected areas with a well-controlled height. The microstructure of the masking layers was fabricated by means of optical photolithography for subsequent growth of nickel micropillars on selected areas. Micropillars size was defined by the opening size a...

Browsing by Author Nguyen, Quoc Hung

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 5 of 5
  • TC_001905.pdf.jpg
  • Article


  • Authors: Nguyen, Quoc Hung (2003)

  • The 20th century has passed by into the shadow of the past; however the century has leftmemorable imprints with extraordinary progresses, wonderful achievements, great changes and even surprising overturns. In that great century, East Asia has made its presence in many aspects and dimensions. This short article only looks at East Asia from the angle of its relation to the world politics of the 20th century…

  • 258.pdf.jpg
  • Article


  • Authors: Nguyen, Quoc Hung; Nguyen, Quang Bau (2002)

  • Based on the quantum kinetic equation for phonon, the amplification of sound (acoustic phonons) due to the absorption of laser radiation in cylindrical quantum wires with parabolic potential in the presence of m agnetic field is studied. Analytical expressions for the rate of acoustic phonons excitations, the conditions for the amplification of sound and the momentum conditions for electron to participate in the amplification of sound are obtained for the two cases: singlephoton absorption process and multiphoton absorption process. The differences between the two cases of singlephoton absorption and m ultiphoton absorption are discussed; the numerical computations and plots are car...

  • Selected-area-growth-of-nickel-micropillars-on-aluminum-thin-films-by-electroless-plating-for-applications-in-microbolometers_2017_Journal-of-Science-.pdf.jpg
  • Article


  • Authors: Do, Ngoc Hieu; Dang, Nguyen Ha My; Vu, Thi Thu; Nguyen, Quoc Hung; Do, Ngoc Chung; Nguyen, Tran Thuat (2017)

  • An optimization process of electroless plating of nickel was carried out with NiCl2as the nickel ion source, NaH2PO2as the reduction agent, CH3COONa and Na3C6H5O7as complexing agents. Electroless plated nickel layers on sputtered aluminum corning glass substrates with a resistivity of about 75.9mUcm and a nickel concentration higher than 93% were obtained. This optimum process was successfully applied in growing nickel micropillars at selected areas with a well-controlled height. The microstructure of the masking layers was fabricated by means of optical photolithography for subsequent growth of nickel micropillars on selected areas. Micropillars size was defined by the opening size a...