• The Optical Journal
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• s.125
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• pp.22-23
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• 2010

1970년대 중반 일본에서 만들어진 메카트로닉스(Mechatronics)라는 용어는 기계공학(Mechanics)과 전자공학(Electronics)의 합성어로 1980년대 이후 전세계적으로 널리 사용되었다. 이후 컴퓨터 기술의 급속한 발전에 힘입어 메카트로닉스는 로봇, 공장자동화, CNC공작기계 등 현대산업의 근간을 이루는 핵심 기술로 자리매김 하였다. 최근에는 학문의 경계를 허무는 작업들이 더욱 속도를 내고 있는 가운데, 생활에서 늘 접하는 휴대폰, TV, 빔프로젝트 등의 제품에 시각적 신호를 창출하기 위한 광학적 요소가 결합되고 있다. 이를 우리는 옵토메카트로닉스(Optomechatronics)라는 영역으로 분류한다. 여기에 생체공학(Bionics)과 나노기술(Nano technology)의 결합을 필요로 하는 제품들이 또한 바이오옵토메카트로닉스(Bio-Optomechatronics)또는 나노바이오 옵토메카트로닉스(Nano-Bioopmechatronics)등의 새로운 영역 창출을 준비하고 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1153-1154
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• 2023

본 논문에서는 아두이노를 이용하여 유아용전동차가 실제 도로와 유사한 환경의 트랙을 자율주행할 수 있는 방법을 찾고자 한다. 라이다와 카메라를 이용하여 차선을 따라 주행하고, 장애물을 회피하고 신호등의 지시에 따라 정지하고 출발하며, 후진 주차를 완수하는 알고리즘을 완성하였다.

• Journal of the Korean Society for Precision Engineering
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• v.21 no.1
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• pp.17-25
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• 2004

• Journal of the Korean Society for Precision Engineering
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• v.20 no.1
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• pp.7-25
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• 2003

• Journal of agriculture & life science
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• v.50 no.5
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• pp.217-224
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• 2016

In this study, performance of a developed automatic punching machine considering the planting density of soybeans was evaluated in the case of the operation speed of 0.18-0.28 m/s. The performance demonstrated a rate of 320-500 ㎡/h, 260-400 ㎡/h, and 210-330 ㎡/h for the 0.20 m, 0.25 m, and 0.30 m soybean planting density, respectively. One hundred percent punching capacity was confirmed in 30 mm distance between the ground and the blade. Additionally, in the 50 mm distance condition, the performance of round, square, and hexagonal blades were observed in the range of 16.7-25.2%, 33.0-42.3%, and 54.5-100.0%, respectively. Above all, the hexagonal blade with a 60° edge angle had the most superior cutting quality demonstrating a smooth and soft cutting plane of the plastic.

• Journal of the Microelectronics and Packaging Society
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• v.29 no.4
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• pp.55-61
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• 2022

There is a major interest in diagnostic technology for multiple cancers worldwide. In order to reduce the difficulty of cancer diagnosis, a liquid biopsy technology based on a microfluidic device using trace amounts of biofluids such as blood is being studied. And optical biosensing, which measures the concentration of analytes through fluorescence imaging using biofluids, requires various strategies to improve sensitivity, and specialists and equipment are needed to carry out these strategies. This leads to an increase in diagnostic and production costs, and it is necessary to develop a technology to solve this problem. In this paper, we design and propose a fluorescent multi-cancer diagnostic sensing platform structure that implements passive self-separation technology and molecular recognition activation functions by fluid mixing, only with the geometry and microfluidic phenomena of microchannels based on self-driven flow by capillary force. In order to check the parameters affecting the performance of the plasma separation part of the designed sensor, the hydrodynamic diameter of the channel and the viscosity of the fluid were set as variables to confirm the formation of plasma separation flow through simulation. And finally, we propose an optimal sensor platform structure.

• Journal of the Korean Society for Heat Treatment
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• v.34 no.5
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• pp.233-238
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• 2021

The mechanical, anti-tarnishing, and corrosion characteristics of Yuggi (Cu-22wt%Sn) alloy are greatly affected by fraction of constituent phases according to heat treatment method. The Yuggi heat-treated at 750℃ has a β1' phase of 98% or more, which is a high-temperature disordered beta phase, on the other hand, cast Yuggi that Sn is solid-solutioned into Cu consists with α-phase over 60v/o. This difference of constituent phases of Yuggi may cause a difference in dissolution of Cu under antimicrobial test condition. Nonetheless, few studies have been conducted on the effect of fraction of constituent phases and constituent phases in antimicrobial activity. In addition, few studies have also been conducted on the suitable method measuring the antimicrobial activity of Yuggi. Hence, the purpose of this study is to provide an optimum measurement method of antimicrobial activity, and to evaluate quantitatively the effect of constituent phases on antimicrobial activity.

• Journal of the Korean Society for Heat Treatment
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• v.35 no.3
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• pp.130-138
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• 2022

In this study, the characteristic of an amorphous fishing weight material according to controlling the alloy type and alloy composition of the glass forming agent added in PbO₂ oxide was investigated. According to the experimental, when the glass forming agent of 15wt%SiO₂-1wt%MgO content was added in β-PbO₂, an amorphous fishing weight substitute having the lowest friction coefficient, excellent corrosion resistance and durability was obtained. The cell number of PbO₂-15wt%SiO₂-1wt%MgO sample incubated in cell culture fluid tended to hardly decrease even after a lapse of 24 hours, It means that the fabricated PbO₂-15wt%SiO₂-1wt%MgO sample is significantly less-toxic and harmless to the human body, unlikely to metallic lead. It is considered that an fabricated amorphous fishing weight substitute proved to have a potential as an eco-friendly material with little marine pollution.

• Journal of the Microelectronics and Packaging Society
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• v.26 no.2
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• pp.55-58
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• 2019

Surface plasmon effect was considered importantly because of the enhancement of optical signals. It is important to detect weak optical signal in neuroscience and bio technology due to detect weaker image or signal. The height of silver can change the optical characteristic of plasmonic nano structure including transmittance and reflectance. In this paper, the optical characteristic of plasmonic nano structure were confirmed by the FDTD analysis method depending on the silver height and it was confirmed that energy was concentrated at the center of nano structure, and high far-field gain and current density in particular wavelength coule be obtained.

• Journal of the Microelectronics and Packaging Society
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• v.28 no.1
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• pp.1-12
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• 2021

Here, we introduce a laser-induced graphene synthesis technology and its applications for the electric/electronic device manufacturing process. Recently, the micro/nanopatterning technique of graphene has received great attention for the utilization of these new graphene structures, which shows progress developments at present with a variety of uses in electronic devices. Some examples of practical applications suggested a great potential for the tunable graphene synthetic manners through the control of the laser set-up, such as a selection of the wavelength, power adjustment, and optical techniques. This emerging technology has expandability to electric/electronic devices combined together with existed micro-packaging technology and can be integrated with the new processing steps to be applied for the operation in the fields of biosensors, supercapacitors, electrochemical sensors, etc. We believe that the laser-induced graphene technology introduced in this paper can be easily applied to portable small electronic devices and wearable electronics in the near future.