Frictional properties of magnetic media coated with Langmuir-Blodgett films

Seto, Jun’etsu; Nagai, Takeshi; Ishimoto, Coe; Watanabe, Haruo

doi:10.1016/0040-6090(85)90122-1

Cited by 34 publications

(8 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 12 shows the kinetic friction coefficients for the fluorinated polymer nanosheets as a function of the number of layers. The coefficients remain approximately the same irrespective of the number of deposited layers, which is also observed in the case of low‐molecular‐weight LB films 86, 87. This means that the lubricating phenomenon in the LB films is determined only by the surface monolayer, and the lubricating performance of poly( N ‐polyfluoroalkylacrylamide)s is enough with one layer (LB monolayer) when the lubricating durability can be disregarded.…”

Section: Fabrication Of Fluorinated Polymer Nanosheets and Their Surfsupporting

confidence: 63%

Fabrication of fluorinated polymer nanosheets using the Langmuir–Blodgett technique: characterization of their surface properties and applications

Aminuzzaman

Mitsuishi

Miyashita

2010

Polymer International

View full text Add to dashboard Cite

This review describes the bottom‐up design of ultra‐thin fluorinated polymer films. Fluorinated polymer assemblies offer unique and application‐oriented properties strongly correlated with surface chemistry. We focus on our recent topic of research, fluorinated polymer nanosheets, which are ultra‐thin polymer films fabricated from amphiphilic fluorinated polyalkylacrylamides using the elegant Langmuir–Blodgett technique. These fluorinated polymer nanosheets have excellent hydrophobicity, extremely low surface energy and a low friction coefficient. Therefore, fluorinated polymer nanosheets are attractive nanomaterials for surface modification in terms of tailoring of wettability, frictional properties, adhesion and surface chemistry. The nanocoating technique using reactive fluorinated polymer nanosheets and surface modification of hard disks and microchannels are also reviewed. Copyright © 2010 Society of Chemical Industry

show abstract

Section: Fabrication Of Fluorinated Polymer Nanosheets and Their Surfsupporting

confidence: 63%

Fabrication of fluorinated polymer nanosheets using the Langmuir–Blodgett technique: characterization of their surface properties and applications

Aminuzzaman

Mitsuishi

Miyashita

2010

Polymer International

View full text Add to dashboard Cite

show abstract

“…Tribological studies of SAMs were preceded by friction measurements of Langmuir-Blodgett films of fatty acids on mica [41] and metals [297] [298]. These molecules reduced friction coefficient µ to 0.35 and 0.28, respectively, from the bare glass value of > 0.61.…”

Section: Early Experimental Studies Of Sam Lubricantsmentioning

confidence: 99%

Recent advances in single-asperity nanotribology

Szlufarska

Chandross

Carpick

2008

J. Phys. D: Appl. Phys.

411

353

View full text Add to dashboard Cite

As the size of electronic and mechanical devices shrinks to the nanometre regime, performance begins to be dominated by surface forces. For example, friction, wear and adhesion are known to be central challenges in the design of reliable micro-and nano-electromechanical systems (MEMS/NEMS). Because of the complexity of the physical and chemical mechanisms underlying atomic-level tribology, it is still not possible to accurately and reliably predict the response when two surfaces come into contact at the nanoscale. Fundamental scientific studies are the means by which these insights may be gained. We review recent advances in the experimental, theoretical and computational studies of nanotribology. In particular, we focus on the latest developments in atomic force microscopy and molecular dynamics simulations and their application to the study of single-asperity contact.

show abstract

“…Ultrathin films have received considerable attention for many years because of their wide range of potential applications as sensors, 2,3 lubricants, 4 or electronic devices. 5,6 Recently, the study of molecular orientation in these films has received a considerable amount of attention because of its relationship to the film structure and surface functionality.…”

Section: Introductionmentioning

confidence: 99%

Determination of Molecular Orientation in Biaxially Oriented Ultrathin Films

et al. 2004

View full text Add to dashboard Cite

Biaxial orientation in ultrathin films is characterized by a preferential orientation of the main molecular axis in the plane of the film in addition to its orientation with respect to the normal of the film. In this paper, analytical expressions allowing the calculation of the molecular orientation in biaxially oriented films from their anisotropic optical constants are presented for the first time. These expressions have been used to calculate the molecular orientation in multilayers of poly(γ-benzyl-L-glutamate) and to determine the angles between the main molecular axis and the different transition moments used (R angles). Using the optical constants determined by Buffeteau et al.1 for PBG multilayers, we have found that the tilt angle of the PBG helices with respect to the monolayer normal is 89°and that the azimuthal angle in the plane is 57°. The calculated R angles for the carbonyl stretching mode of the ester group and the amide I and amide II modes of the amide group are 49, 34 and 74°, respectively. The analytical expressions presented in this paper have also been used to calculate the molecular orientation in Langmuir-Blodgett monolayers of an equimolar blend of poly(D-lactide) and poly(L-lactide). The optical constants of a monolayer of the polylactide mixture determined using p-and s-polarized transmittance and p-polarized reflection-absorption infrared spectra have shown that the polylactide helices have a tilt angle of 81°and an azimuthal angle of 56°.

show abstract

Frictional properties of magnetic media coated with Langmuir-Blodgett films

Cited by 34 publications

References 9 publications

Fabrication of fluorinated polymer nanosheets using the Langmuir–Blodgett technique: characterization of their surface properties and applications

Fabrication of fluorinated polymer nanosheets using the Langmuir–Blodgett technique: characterization of their surface properties and applications

Recent advances in single-asperity nanotribology

Determination of Molecular Orientation in Biaxially Oriented Ultrathin Films

Contact Info

Product

Resources

About