레이저 애칭으로 가공된 미세홈의 모세관 특성평가

• 영문명: Investigation of capillary characteristics of laser-etched microgrooves
• 발행기관: 한국레이저가공학회
• 저자명: 임현덕(H. D. Im) 오광환(K. H. Oh) 임현택(H. T. Lim) 정성호(S. H. Jeong)
• 간행물 정보: 『한국레이저가공학회 학술대회 논문집』2008년도 춘계학술발표대회 논문집, 21~27쪽, 전체 7쪽
• 주제분류: 공학 > 기계공학
• 파일형태: PDF
• 발행일자: 2008.06.30

영문 초록

An optical fiber-based laser etching technique is used to fabricate microgrooves on stainless steel foil. A nozzle structure that produces an etchant jet is designed and utilized in experiments so that the application of laser etching technique can be extended to arbitrary size workpiece. The fabricated microgrooves can be applied for the wick-structure of micro heat pipes through which the circulation of working fluid occurs by capillary pressure. The capillary pressure of the microgrooves depends on the parameters including working fluid, groove size and shape, and surface roughness, and directly influences on the performance of micro heat pipes. The capillary flow velocity for varying groove parameters is measured to examine the relationship between groove parameters and cooling capacity of micro heat pipes.