scholarly journals Electroresponsive structuring and friction of a non-halogenated ionic liquid in a polar solvent: effect of concentration

2020 ◽  
Vol 22 (34) ◽  
pp. 19162-19171 ◽  
Author(s):  
Georgia A. Pilkington ◽  
Anna Oleshkevych ◽  
Patricia Pedraz ◽  
Seiya Watanabe ◽  
Milad Radiom ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Ionic Liquid ◽  
Solvent Effect ◽  
Polar Solvent ◽  
Neutron Reflectivity ◽  
Force Microscopy ◽  
Frictional Properties ◽  
Atomic Force

Neutron reflectivity and atomic force microscopy results reveal the electroresponsive interfacial structuring and nano-frictional properties of ionic liquid (IL) lubricant mixtures with a polar solvent are strongly dependent on bulk IL concentration.

scholarly journals Effect of water on the electroresponsive structuring and friction in dilute and concentrated ionic liquid lubricant mixtures

2020 ◽  
Vol 22 (48) ◽  
pp. 28191-28201
Author(s):  
Georgia A. Pilkington ◽  
Rebecca Welbourn ◽  
Anna Oleshkevych ◽  
Seiya Watanabe ◽  
Patricia Pedraz ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Ionic Liquid ◽  
Neutron Reflectivity ◽  
Force Microscopy ◽  
Liquid Lubricant ◽  
Effect Of Water ◽  
Atomic Force ◽  
Ambient Levels

The influence of ambient levels of water on the electroresponsive interfacial structuring and nanofriction of ionic liquid lubricant mixtures has been investigated by neutron reflectivity and atomic force microscopy.

Molecularly clean ionic liquid/rubrene single-crystal interfaces revealed by frequency modulation atomic force microscopy

2015 ◽  
Vol 17 (10) ◽  
pp. 6794-6800 ◽  
Author(s):  
Yasuyuki Yokota ◽  
Hisaya Hara ◽  
Yusuke Morino ◽  
Ken-ichi Bando ◽  
Akihito Imanishi ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Ionic Liquid ◽  
Single Crystal ◽  
Frequency Modulation ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Force Microscopy ◽  
Atomic Force ◽  
Clean Interface ◽  
Crystal Interfaces

Frequency modulation atomic force microscopy was employed to show a molecularly clean interface between an ionic liquid and a rubrene single crystal for possible applications to electric double-layer field-effect transistors.

Effect of Albumin Concentrations on Frictional Coefficients of Cobalt-Chromium Femoral Head From Atomic Force Microscopy

2010 ◽  
Author(s):  
CongTruyen Duong ◽  
Jae-Hoon Lee ◽  
SangSoo Lee ◽  
Seonghun Park
Keyword(s):  
Atomic Force Microscopy ◽  
Cobalt Chromium ◽  
Hip Implant ◽  
Force Microscopy ◽  
Implant Materials ◽  
Frictional Properties ◽  
Atomic Force ◽  
Joint Implants ◽  
Effective Lubricant ◽  
Frictional Coefficients

Atomic Force Microscopy (AFM) has been widely used to measure frictional properties of diverse materials at the microscopic level [1, 2]. Furthermore, there has been the general agreement that albumin plays an important role as an effective lubricant in the frictional behavior of hip implant materials. Through hip simulator, it has been reported that either boundary or mixed lubrication occurs when bovine serum albumin was used as a lubricant [3, 4]. When lubricants contained proteins of albumin or globulin, the frictional properties of the rubbing surfaces were affected by the adsorption of these constituents on the bearing surfaces of the prostheses [4]. Through macroscopic pin-on-disk measurements, another study in the literature has reported the importance of albumin as an effective lubricant for reducing friction and wear of hip implant materials [5]. Although microscopic AFM measurements are very effective for exploring boundary lubrication of diverse lubricants on joint implants, because the frictional coefficients of bearing surfaces in the joint implants can be measured without being affected by the surface roughness of bearing materials, the effect of boundary lubrications of bovine serum albumin (BSA) on hip implant materials has not been well identified. Therefore, the objective of the present study is to investigate the role of BSA as a boundary lubricant in the lubrication of cobalt-chromium (CoCr) femoral head ten years after total hip arthroplasty (THA) by measuring its frictional coefficients with AFM techniques.

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