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Compensation on Impedance of the Stratum Corneum
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 Title & Authors
Compensation on Impedance of the Stratum Corneum
Kim, Ki-Won; Choi, Han-Yoon; Sim, Myeong-Heon; Jeong, In-Cheol; Yoon, Hyung-Ro;
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This study aims at compensation of the skin moisture level using skin impedance and SR factor. SR factor is related with the current diffusion into the skin layer. To efficiently analyze the current diffusion on the skin model, we used an electromagnetic simulation program called Ansys 10.0 Emag. We confirmed that the measured value decreases as the electric current gets more diffused to the layer below the horny layer. In order to conduct actual experiments based on the simulated result, we manufactured special electrodes with 24 pins by arranging 0.8mm-diameter electrodes every 0.5mm, in a array. By simultaneously achieving both impedance value and SR value of skin with the manufactured electrodes, we compared the skin moisture level using the existing equipment to the skin moisture level applied using the skin impedance as well as the SR factor developed in this study. The correlation coefficient between the skin moisture level achieved from the existing equipment and the reference value was 0.615 (p<0.01), whereas the correlation coefficient between the skin moisture achieved from the regression equation in this study was 0.677 (p<0.01). Accordingly, it was confirmed that applying SR factor additionally improves the moisture level more precisely.
Array electrode;Compensation of the skin moisture;Moisture of the stratum corneum;Skin impedance;SR parameter;
 Cited by
C. S. Yoo, "The effects of moisturizing and oiling bath for the inpatients with dry skin," The Seoul Journal of Nursing, vol. 12, no. 2, pp. 220-235, July 1998

P. Elsner, Bioengineering of the Skin: Water and the Stratum Corneum. CRC., 1994

O. G. Martinsen, "Electrical methods for skin moisture assessment," Skin Pharmacol, vol. 8, pp. 237-245, 1995 crossref(new window)

H. Lee and G. Kim, "Skin science," 1st Edition, Gunja Press, 2003

T. Yamamoto, "Electrical properties of the epidermal stratum corneum," Medical and Biological Engineering, pp. 151-158, Mar.. 1976

Y.-A. Woo, "Development of a method for the determination of human skin moisture using a portable near-infrared system," Anal. Chem., vol. 73, pp. 4964-4971, 2001 crossref(new window)

O. G. Martinsen, "Measuring depth depends on frequency in electrical skin impedance measurements," Skin Research and Technology, vol. 5, pp. 179-181, 1999 crossref(new window)

R. Ivanic, "Thin film non-symmetric micro-electrode array for impedance monitoring of human skin," Thin Solid Fims, pp. 332-336, 2003

F. Norman, "Electrical conductivity measurements using microfabricated interdigitated electrodes," Anal. Chem. pp. 1199-1202, 1993

S. Pearson, "Electrical skin impedance at acupuncture points," The Journal of alternative and complementary medicine, vol.13, no.4, pp.409-418, 2007 crossref(new window)

J. Sato, "Dry condition affects desquamation of stratum corneum in vivo," Journal of Dermatological Science, vol. 18, pp. 163-169, 1998 crossref(new window)

J. Sato, "Water content and thickness of the stratum corneum contribute to skin surface morphology," Arch Dermatol Res., pp. 412-417, 2000

D. Fouchard, "Effect of iontophoretic current flow on hairless rat skin in vivo," Journal of Controlled Release, vol.46, pp. 89-94, Jan.1997 crossref(new window)