34 citations · 70 across the 11 of their papers we have counts for
11 papers
Microscope Projection Photolithography Based on Liquid Crystal Microdisplay
Young-Gu Ju, Hyeon-Jun Kim, Young-Min Ko
We developed a microdisplay-based microscope projection photolithography (MDMPP) technique in which a liquid crystal (LC) microdisplay is used as a reconfigurable photomask for a m…
Measurement of resistance coefficients of pendulum motion with balls of various sizes
Kyung-Ryul Lee, Young-Gu Ju
In order to obtain the damping and resistance coefficients of a pendulum, we constructed an optical system containing a photogate for measuring the speed of the pendulum at the low…
Fabrication of a low-cost and high-resolution papercraft smartphone spectrometer
Young-Gu Ju
We demonstrated the fabrication of a low-cost and high-resolution papercraft smartphone spectrometer and characterized its performance by recording spectra from gas discharge lamps…
Microscope Projection Photolithography Based on Ultraviolet Light-emitting Diodes
Minjae Kwon, Young-Gu Ju
We adapted a conventional microscope for projection photolithography using an ultraviolet (UV) light-emitting diode (LED) as a light source. The use of a UV LED provides the micros…
Fabrication of a high-resolution smartphone spectrometer for education using a 3D printer
Yura Woo, Young-Gu Ju
In this paper, we present the details of the development of a smartphone spectrometer for education using a 3D printer and characterized the performance by comparison with a paper…
Generation of a retro-reflected wave by interaction of an evanescent wave with a sub-wavelength structure
Young-Gu Ju, Thomas Milster
Numerical calculations were performed to examine the mechanisms for generation of a retro-reflected wave from the interaction of an evanescent wave with a sub-wavelength structure…