TY - JOUR
T1 - Surface characterization and thermomechanical behavior of nanostructured-gold layer for biomedical applications
AU - Wu, Chi Ming
AU - Lu, Yi Jung
AU - Chen, Shyuan Yow
AU - Wen, Shih Cheng
AU - Wu, Chia Hung
AU - Liao, Pei Bang
AU - Ou, Keng Liang
AU - Chou, Hsin Hua
PY - 2019/4/25
Y1 - 2019/4/25
N2 - The microstructure and surface properties of the optimal nanostructured-gold (ONG) film were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, nanoindentation and static contact angle evaluation in the present study. A three-dimensional model of human liver was reconstructed using magnetic resonance imaging to simulate the thermomechanical performance of the ONG film by means of finite element model analysis. Moreover, a monopolar electrosurgical unit equipped with needle type uncoated stainless steel (U-SS) and ONG film coated stainless steel (ONG-SS) electrodes was used to investigate the thermal distribution in the liver of rats. Experimental results showed that the temperature decreased significantly when using the ONG-SS electrode. The ONG-SS electrode also created a relatively small thermal injury area and lateral thermal effect. Furthermore, thermography indicated that the ONG-SS electrode exhibited a significantly lower surgical temperature as compared with the U-SS electrode during electrosurgery process in rats. Therefore, it could be demonstrated that the ONG-SS electrode is a promising biomedical device for reducing excessive thermal injury and decreasing adherence tissue in electrosurgery.
AB - The microstructure and surface properties of the optimal nanostructured-gold (ONG) film were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, nanoindentation and static contact angle evaluation in the present study. A three-dimensional model of human liver was reconstructed using magnetic resonance imaging to simulate the thermomechanical performance of the ONG film by means of finite element model analysis. Moreover, a monopolar electrosurgical unit equipped with needle type uncoated stainless steel (U-SS) and ONG film coated stainless steel (ONG-SS) electrodes was used to investigate the thermal distribution in the liver of rats. Experimental results showed that the temperature decreased significantly when using the ONG-SS electrode. The ONG-SS electrode also created a relatively small thermal injury area and lateral thermal effect. Furthermore, thermography indicated that the ONG-SS electrode exhibited a significantly lower surgical temperature as compared with the U-SS electrode during electrosurgery process in rats. Therefore, it could be demonstrated that the ONG-SS electrode is a promising biomedical device for reducing excessive thermal injury and decreasing adherence tissue in electrosurgery.
KW - Finite element model analysis
KW - Microstructure
KW - Nanostructured-gold coating
KW - Surface modification
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U2 - 10.1016/j.jallcom.2018.12.255
DO - 10.1016/j.jallcom.2018.12.255
M3 - Article
AN - SCOPUS:85059576146
SN - 0925-8388
VL - 782
SP - 1114
EP - 1120
JO - Journal of the Less-Common Metals
JF - Journal of the Less-Common Metals
ER -