Chang Hyun Roh

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Globally, over 170 million people (ca. 3% of the World's population) are infected with the hepatitis C virus (HCV), which can cause serious liver diseases such as chronic hepatitis, evolving into subsequent health problems. Driven by the need to detect the presence of HCV, as an essential factor in diagnostic medicine, the monitoring of viral protein has(More)
A simple, rapid, and convenient colorimetric chemosensor of a specific target toward the end user is still required for on-site detection and real-time monitoring applications. In this study, we developed a rapid in situ colorimetric assay for cobalt detection using the naked eye. Interestingly, a yellow to light orange visual color transition was observed(More)
This paper describes the use of an analytical microfluidic sensor for accelerating chemo-repellent response and strong anti-bacterial 1-(Thien-2-yl)-3-(2, 6-difluoro phenyl) prop-2-en-1-one (1-TDPPO). The chemically-synthesized antimicrobial agent, which included prop-2-en-1-one and difluoro phenyl groups, was moving through an optically transparent(More)
— This paper presents a new biped humanoid robot Mahru III (150cm, 62Kg) developed by Samsung Electronics Co., Ltd in 2007. The ultimate goal of this project is to design biped humanoid robots connected to a wireless network environment so that they can be used in our daily life. As the first step, Mahru III was built as a pilot platform for future(More)
The number of young children classified as being affected with attention deficit/hyperactivity disorder (ADHD) is reaching a very serious level. A method to help children with attention-related conditions such as ADHD without depending on drugs is required. In this context, the necessity for research on means of improving attention through the use of(More)
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