Preliminary Study to Establish a Relationship between Tactile Sensation and Surface Roughness

2010 ◽  
Vol 44 (1) ◽  
pp. 24-28 ◽  
Author(s):  
M. Ando ◽  
G.J. Eckert ◽  
D.T. Zero
Keyword(s):  
Surface Roughness ◽  
Tactile Sensation ◽  
Preliminary Study

Modeling the relationship between tactile sensation and physical properties of synthetic leather

2019 ◽  
Vol 50 (3) ◽  
pp. 346-363 ◽  
Author(s):  
Tsuyoshi Chiba ◽  
Shota Kuroda ◽  
Masaki Yamaguchi
Keyword(s):  
Surface Roughness ◽  
Contact Angle ◽  
Physical Properties ◽  
Frictional Coefficient ◽  
Physical Property ◽  
Tactile Sensation ◽  
Adult Women ◽  
Characteristic Analysis ◽  
Synthetic Leather ◽  
Tactile Sensations

Surface texture plays an important role in expressing the tactile sensation of leather. The purpose of this study was to develop a combinational panel of physical properties that express the tactile sensations of coarse/fine, uneven/flat, soft/hard, sticky/slippery, and moist/dry. Thirteen synthetic leather samples were fabricated from polyurethane, and eight physical properties were measured as storage modulus, loss modulus, surface roughness, waviness, mean frictional coefficient, apparent contact angle, contact angle hysteresis, and urethane thickness. Thirty adult women performed sensory evaluation of the five tactile sensations by using a semantic differential method based on a five-point scale. The tactile sensation–physical property model for each tactile sensation was explored with logistic regression analysis. Receiver operating characteristic analysis showed that the proposed models based on multiple physical properties clearly distinguish the tactile sensations with higher sensitivity and specificity compared to using a single physical property. The dynamic viscoelasticity contributed to all the tactile sensations when polyurethane was used as synthetic leather. Additionally, the difference of five tactile sensations might be caused by the surface roughness, the mean frictional coefficient, and the polyurethane thickness.

The influence of implant surface roughness on decontamination by antimicrobial photodynamic therapy and chemical agents: A preliminary study in vitro

2021 ◽  
Vol 33 ◽  
pp. 102105
Author(s):  
Ísis de Fátima Balderrama ◽  
Vitor de Toledo Stuani ◽  
Matheus Völz Cardoso ◽  
Rodrigo Cardoso Oliveira ◽  
Marcelo Milanda Ribeiro Lopes ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Photodynamic Therapy ◽  
Antimicrobial Photodynamic Therapy ◽  
Implant Surface ◽  
Chemical Agents ◽  
Preliminary Study

scholarly journals In vitro preliminary study of osteoblast response to surface roughness of titanium discs and topical application of melatonin

2015 ◽  
pp. e88-e93 ◽  
Author(s):  
MF. Sola-Ruiz ◽  
C. Perez-Martinez ◽  
JJ. Martin-del-Llano ◽  
C. Carda-Batalla ◽  
C. Labaig-Rueda
Keyword(s):  
Surface Roughness ◽  
Topical Application ◽  
Preliminary Study

scholarly journals Physical origin of a complicated tactile sensation: ‘ shittori feel'

2019 ◽  
Vol 6 (7) ◽  
pp. 190039 ◽  
Author(s):  
Kana Kikegawa ◽  
Rieko Kuhara ◽  
Jinhwan Kwon ◽  
Maki Sakamoto ◽  
Reiichiro Tsuchiya ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Regression Analysis ◽  
Physical Properties ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Solid Material ◽  
Tactile Sensation ◽  
Material Surface ◽  
Physical Origin ◽  
The Relationship

Shittori feel is defined as a texture that is moderately moisturized; however, many people experience ‘ shittori feel’ when they touch a dry solid material containing little liquid. Here, shittori feel was evaluated for 12 materials. We found that the highest score of shittori feel was achieved by powders. Multiple regression analysis showed that shittori feel is a complex sense of moist and smooth feels. We analysed the relationship between the physical properties and the moist/smooth feels to show how subjects felt certain feels simultaneously. The moist and smooth feels are related to the surface roughness and friction characteristics of the materials. The moist and smooth feels can be perceived when the finger starts to move on the material surface and when the finger moves and rubs the material surface, respectively.

Preliminary Study on Highly Efficient Polishing of 4H-SiC by Utilization of Anodic Oxidation

2014 ◽  
Vol 1017 ◽  
pp. 509-514 ◽  
Author(s):  
Kazuya Yamamura ◽  
Kenji Hosoya ◽  
Yusuke Imanishi ◽  
Hui Deng ◽  
Katsuyoshi Endo
Keyword(s):  
Surface Roughness ◽  
Phosphoric Acid ◽  
Single Crystal ◽  
Anodic Oxidation ◽  
Chemical Mechanical Polishing ◽  
Oxidation Rate ◽  
Removal Rate ◽  
Experimental Results ◽  
Single Crystal Sic ◽  
Preliminary Study

Preliminary study on anodic-oxidation-assisted polishing (AOAP) of 4H-SiC (0001) using ceria polishing film was demonstrated. In the case of using deionized (DI) water as an electrolyte, rms roughness of 0.16 nm was obtained, which is almost the same as roughness of the surface finished by conventional chemical mechanical polishing (CMP). However, the polishing rate was very low and was 23 nm/h. In contrast, the polishing rate of 0.84 μm/h, which is equal to that of conventional CMP of single-crystal SiC or greater, was obtained when we used 1 wt% of phosphoric acid (H3PO4) as the electrolyte, although the surface roughness increased to rms roughness of 1 nm order. These experimental results indicate that the polishing rate greatly depends on the oxidation rate of anodic oxidation and the balance between the oxidation rate and the removal rate of oxide by abrasive greatly affects the roughness of the processed surface.

Changes in surface roughness of bracket and wire after experimental sliding - preliminary study using an atomic force microscopy

2010 ◽  
Vol 40 (3) ◽  
pp. 156 ◽  
Author(s):  
Tae-Hee Lee ◽  
Ki-Ho Park ◽  
Ji-Yun Jeon ◽  
Su-Jung Kim ◽  
Hun-Kuk Park ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Atomic Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Preliminary Study

Inappropriate Toothbrushes Selection Alter Composite Dental Material Restoration Surface Roughness: A Preliminary Study

2016 ◽  
Vol 696 ◽  
pp. 108-112
Author(s):  
Elylla Oktaviana ◽  
Retno Ardhani ◽  
Heribertus Dedy Kusuma Yulianto
Keyword(s):  
Surface Roughness ◽  
Dental Plaque ◽  
Resin Composite ◽  
In Vitro Study ◽  
Surface Damage ◽  
Dental Material ◽  
Secondary Caries ◽  
Group A ◽  
Preliminary Study

Introduction. Regular dental plaque control by means of chemically and mechanically methods are among efforts to improve oral health and hygiene. Mechanical cleansing using toothbrush is still the gold standard for continually removing of dental plaque. But on the other hand, inappropriate selection of toothbrushes type selection promotes alteration on dental material restoration surface. Toothbrushes with different degree of stiffness are readily available on market and are classified as hard, medium, and soft. Mechanical friction due to regular movement of the toothbrush with various degree of stiffness was predicted as factor that related with surface roughness alteration on dental material restoration. Nowadays, resin composite material is still declared as the material of choice to repair dental hard tissue damage due to caries activity. However, it has been found that the irregularity of surface promotes bacterial adhesion and biofilm deposition, whereas the smooth surface does not favor bacterial deposition. The progress of bacterial deposition promotes secondary caries on the margin between material restoration and teeth. The aim of this in vitro study was to evaluate the influence of brushing treatment by means of three different toothbrushes on the surface of resin-based compositesExperimental. Specimens were prepared from experimental RBCs with 5 mm diameter and 2 mm thick. Specimens were divided equally into 3 different groups (group A, B, and C). Each group has 5 numbers of specimens. Group A was treated with hard toothbrush, and group B as well as C were treated with medium and soft toothbrush respectively. The toothbrush was mounted in the customized mechanically brushing machine to control the force and number of cycle during specified time. Brushing cycle and time for all groups was conducted for 1000 times of brushing in 60 minutes. Surface roughness resulted from mechanically brushing is evaluated by means of profilometer device.Results and Discussion. The results of the preliminary study shows that there is a differences of surface roughness between groups. The value of roughness varied among all group, and the highest number of roughness were found in group A (> 0.2 micrometres).Conclusions. This result implies brushing with hard toothbrush preferentially has greater risk of surface damage and become pronounce factor of secondary caries.

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