In this study, the characteristics of muscle relaxation were analyzed by the experimental and numerical method. A skin tissue was produced by imitational biological tissue using the agar powder, saline solution and sugar. The tissue was exposed to three types of wavelength-blue visible radiation(410 nm), red visible radiation(635 nm), and infrared ray(830 nm). The temperature results along the depth of tissue were measured according to the variation of light wavelength and irradiation time. The temperature change of the tissue shown up similar pattern regardless of the light wavelength kinds. The wavelength of infrared ray penetrated strongly into tissue between 3.2 mm and 11.4 mm. Also, the temperature change with the irradiation time was small, and the temperature value of the infrared ray was the largest. As a result, the muscle relaxation will occur mainly at the infrared wavelength.

ABSTRACT
 1. 서 론
 2. 실험장치 구성 및 방법
 3. 수치해석
  3.1 해석모델 및 격자계
  3.2 지배방정식 및 해석방법
  3.3 해석결과의 타당성 검증
 4. 결과 및 분석
  4.1 광파장 변화에 따른 근육이완 특성
  4.2 광조사 시간변화에 따른 근육이완 특성
 5. 결 론
 References

• 고동국(Department of Mechanical Engineering, Chonbuk National University) | Dong-Guk Ko
• 이찬우(Laboratory Director in Research & Development Center of SEJA Inc..) | Chan-Woo Lee
• 김민수(Division of Mechanical Design Engineering, Chonbuk National University) | Min-Soo Kim Corresponding Author