Awarded Research Themes and Reports

Note: "Affiliation" in the table is based on the day of grant.
Click onto find the e-mail address of principal investigator. 

Grant Year Research Theme Principal Investigator,
Co-Investigator
(Country)
Research Content
Summary / Related Publication / Main Report
2016
First
Understanding the effect of water on the tribological performance of ionic liquid (IL) lubricants Assoc. Prof. Lei Li (USA)

16A09
Ⅰ. Summary
Ionic liquids show promise as lubricants for nano- and micro-electromechanical systems (NEMS/MEMS). When deposited on solid substrates as thin films, these liquids can exhibit solid-like layering structure, which makes them ideal as nano-lubricants. In this work, we have investigated the friction of various nanometer-thick ionic liquids. While many previous studies showed the impact of cation, we found a dramatic difference in the friction coefficients for 1-Ethyl-3-methylimidazolium bis(trifluorome thylsulfonyl)imide and 1-Ethyl-3-methylimidazolium tris(pentafluoroethyl) trifluoro phosphate, suggesting that anion structure also bears a significant effect on the friction. The effect of water at the interface has also been investigated and the friction profiles of the ionic liquids proved resistant to moisture manipulations. Film thickness, uniformity and adhesion to the substrate were also studied to relate molecular structure and surface morphology to tribology performance. The results provide valuable guidance in designing ILs as potential nanoscale lubricants.
Ⅱ. Related Publication
(Researcher doesn't agree to disclose main report.)
16A09 Related Publication (HP).pdf
Affiliation of Principal Investigator:
University of Pittsburgh
Molecular design of ionic liquids for advanced lubricating fluids Prof. Ichiro Minami (Sweden)
Dr. Erik Nyberg(Sweden)

15B07
Ⅰ. Summary
The tribological properties of novel room-temperature ionic liquids (RTILs), composed of tetraalkylphosphonium silaalkylsulfonate (P-SiSO), were evaluated under boundary conditions. The feature of P-SiSO is hydrocarbon-mimicking properties due to rich in alkyl groups both in anionic and cationic moieties. P-SiSOs provided excellent wear prevention and friction reducing properties up to high contact stress, compared to conventional RTILs such as dialkylimidazolium salts. Chemical analysis of worn surface revealed that the boundary film composed of silicate from the anionic moiety. Phosphates was minor component in boundary film under steady state, while the contents raised after breakdown of the silicate boundary film. It was found that aromatic amine antioxidants enhanced formation of boundary film from the anionic moiety in P-SiSO. Adsorption of the cationic moiety on the boundary film from the anionic moiety was proposed for outstanding lubrication performances. In this way, both anionic and cationic moieties play significant roles on the tribological properties.
Ⅱ. Related Publication
(Researcher doesn't agree to disclose main report.)
15B07 Related Publication (HP).pdf
Affiliation of Principal Investigator:
Luleå University of Technology
2016
Second
Advanced Laser Surface Texturing for Improving Engine Efficiency Dr. Sorin-Cristian Vladescu(UK),
Dr. Thomas Reddyhoff(UK)

16B04
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Affiliation of Principal Investigator:
Imperial College London
Measurement of the Real Area of Contact using Coating Technique and SEM Mr. Yang Xu,
Mr. Yan Chen, Prof. Robert L. Jackson, Prof. Bart Proprok
(all above USA)

16B07
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Affiliation of Principal Investigator:
Auburn University