Softness sensor system for simultaneously measuring the mechanical properties of superficial skin layer and whole skin

Masashi Nakatani, Toru Fukuda, Naomi Arakawa, Tomoyuki Kawasoe, Sadao Omata

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Background/Aims: Few attempts have been made to distinguish the softness of different skin layers, though specific measurement of the superficial layer would be useful for evaluating the emollient effect of cosmetics and for diagnosis of skin diseases. Materials and methods: We developed a sensor probe consisting of a piezoelectric tactile sensor and a load cell. To evaluate it, we firstly measured silicone rubber samples with different softness. Then, it was applied to human forearm skin before and after tape-stripping. A VapoMeter and skin-surface hygrometer were used to confirm removal of the stratum corneum. A Cutometer was used to obtain conventional softness data for comparison. Results and conclusions: Both the piezoelectric tactile sensor and the load cell could measure the softness of silicone rubber samples, but the piezoelectric tactile sensor was more sensitive than the load cell when the reaction force of the measured sample was under 100 mN in response to a 2-mm indentation. For human skin in vivo, transepidermal water loss and skin conductance were significantly changed after tape-stripping, confirming removal of the stratum corneum. The piezoelectric tactile sensor detected a significant change after tape-stripping, whereas the load cell did not. Thus, the piezoelectric tactile sensor can detect changes of mechanical properties at the skin surface. The load cell data were in agreement with Cutometer measurements, which showed no change in representative skin elasticity parameters after tape-stripping. These results indicate that our sensor can simultaneously measure the mechanical properties of the superficial skin layer and whole skin.

Original languageEnglish
JournalSkin Research and Technology
Volume19
Issue number1
DOIs
Publication statusPublished - 2013 Feb
Externally publishedYes

Fingerprint

Skin
Touch
Silicone Elastomers
Cornea
Emollients
Elasticity
Skin Diseases
Forearm
Cosmetics
Water

Keywords

  • Cosmetics
  • Dermatology
  • Skin softness measurement
  • Tactile sensors

ASJC Scopus subject areas

  • Dermatology

Cite this

Softness sensor system for simultaneously measuring the mechanical properties of superficial skin layer and whole skin. / Nakatani, Masashi; Fukuda, Toru; Arakawa, Naomi; Kawasoe, Tomoyuki; Omata, Sadao.

In: Skin Research and Technology, Vol. 19, No. 1, 02.2013.

Research output: Contribution to journalArticle

@article{42b73e63e6eb42d6b389bf6ec58cd1d4,
title = "Softness sensor system for simultaneously measuring the mechanical properties of superficial skin layer and whole skin",
abstract = "Background/Aims: Few attempts have been made to distinguish the softness of different skin layers, though specific measurement of the superficial layer would be useful for evaluating the emollient effect of cosmetics and for diagnosis of skin diseases. Materials and methods: We developed a sensor probe consisting of a piezoelectric tactile sensor and a load cell. To evaluate it, we firstly measured silicone rubber samples with different softness. Then, it was applied to human forearm skin before and after tape-stripping. A VapoMeter and skin-surface hygrometer were used to confirm removal of the stratum corneum. A Cutometer was used to obtain conventional softness data for comparison. Results and conclusions: Both the piezoelectric tactile sensor and the load cell could measure the softness of silicone rubber samples, but the piezoelectric tactile sensor was more sensitive than the load cell when the reaction force of the measured sample was under 100 mN in response to a 2-mm indentation. For human skin in vivo, transepidermal water loss and skin conductance were significantly changed after tape-stripping, confirming removal of the stratum corneum. The piezoelectric tactile sensor detected a significant change after tape-stripping, whereas the load cell did not. Thus, the piezoelectric tactile sensor can detect changes of mechanical properties at the skin surface. The load cell data were in agreement with Cutometer measurements, which showed no change in representative skin elasticity parameters after tape-stripping. These results indicate that our sensor can simultaneously measure the mechanical properties of the superficial skin layer and whole skin.",
keywords = "Cosmetics, Dermatology, Skin softness measurement, Tactile sensors",
author = "Masashi Nakatani and Toru Fukuda and Naomi Arakawa and Tomoyuki Kawasoe and Sadao Omata",
year = "2013",
month = "2",
doi = "10.1111/j.1600-0846.2012.00648.x",
language = "English",
volume = "19",
journal = "Skin Research and Technology",
issn = "0909-752X",
publisher = "Wiley-Blackwell",
number = "1",

}

TY - JOUR

T1 - Softness sensor system for simultaneously measuring the mechanical properties of superficial skin layer and whole skin

AU - Nakatani, Masashi

AU - Fukuda, Toru

AU - Arakawa, Naomi

AU - Kawasoe, Tomoyuki

AU - Omata, Sadao

PY - 2013/2

Y1 - 2013/2

N2 - Background/Aims: Few attempts have been made to distinguish the softness of different skin layers, though specific measurement of the superficial layer would be useful for evaluating the emollient effect of cosmetics and for diagnosis of skin diseases. Materials and methods: We developed a sensor probe consisting of a piezoelectric tactile sensor and a load cell. To evaluate it, we firstly measured silicone rubber samples with different softness. Then, it was applied to human forearm skin before and after tape-stripping. A VapoMeter and skin-surface hygrometer were used to confirm removal of the stratum corneum. A Cutometer was used to obtain conventional softness data for comparison. Results and conclusions: Both the piezoelectric tactile sensor and the load cell could measure the softness of silicone rubber samples, but the piezoelectric tactile sensor was more sensitive than the load cell when the reaction force of the measured sample was under 100 mN in response to a 2-mm indentation. For human skin in vivo, transepidermal water loss and skin conductance were significantly changed after tape-stripping, confirming removal of the stratum corneum. The piezoelectric tactile sensor detected a significant change after tape-stripping, whereas the load cell did not. Thus, the piezoelectric tactile sensor can detect changes of mechanical properties at the skin surface. The load cell data were in agreement with Cutometer measurements, which showed no change in representative skin elasticity parameters after tape-stripping. These results indicate that our sensor can simultaneously measure the mechanical properties of the superficial skin layer and whole skin.

AB - Background/Aims: Few attempts have been made to distinguish the softness of different skin layers, though specific measurement of the superficial layer would be useful for evaluating the emollient effect of cosmetics and for diagnosis of skin diseases. Materials and methods: We developed a sensor probe consisting of a piezoelectric tactile sensor and a load cell. To evaluate it, we firstly measured silicone rubber samples with different softness. Then, it was applied to human forearm skin before and after tape-stripping. A VapoMeter and skin-surface hygrometer were used to confirm removal of the stratum corneum. A Cutometer was used to obtain conventional softness data for comparison. Results and conclusions: Both the piezoelectric tactile sensor and the load cell could measure the softness of silicone rubber samples, but the piezoelectric tactile sensor was more sensitive than the load cell when the reaction force of the measured sample was under 100 mN in response to a 2-mm indentation. For human skin in vivo, transepidermal water loss and skin conductance were significantly changed after tape-stripping, confirming removal of the stratum corneum. The piezoelectric tactile sensor detected a significant change after tape-stripping, whereas the load cell did not. Thus, the piezoelectric tactile sensor can detect changes of mechanical properties at the skin surface. The load cell data were in agreement with Cutometer measurements, which showed no change in representative skin elasticity parameters after tape-stripping. These results indicate that our sensor can simultaneously measure the mechanical properties of the superficial skin layer and whole skin.

KW - Cosmetics

KW - Dermatology

KW - Skin softness measurement

KW - Tactile sensors

UR - http://www.scopus.com/inward/record.url?scp=84872152119&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84872152119&partnerID=8YFLogxK

U2 - 10.1111/j.1600-0846.2012.00648.x

DO - 10.1111/j.1600-0846.2012.00648.x

M3 - Article

C2 - 22672219

AN - SCOPUS:84872152119

VL - 19

JO - Skin Research and Technology

JF - Skin Research and Technology

SN - 0909-752X

IS - 1

ER -