نتایج جستجو برای: surface wettability

تعداد نتایج: 637671  

Journal: :Journal of the Korean Society of Tribologists and Lubrication Engineers 2013

Journal: :Advanced healthcare materials 2014
Andrew L Hook Chien-Yi Chang David J Scurr Robert Langer Daniel G Anderson Paul Williams Martyn C Davies Morgan R Alexander

The thermally triggered release of up to 96% of attached uropathogenic E. coli is achieved on two polymers with opposite changes in surface wettability upon reduction in temperature. This demonstrates that the bacterial attachment to a surface cannot be explained in terms of water contact angle alone; rather, the surface composition of the polymer plays the key role.

Journal: :Chemical communications 2012
Meihua Jin Shasha Li Jing Wang Zhongxin Xue Mingyi Liao Shutao Wang

The interesting oil-wetting behavior to a superamphiphobic surface in water has been investigated. We demonstrated that the trapped air can tune the underwater wettability of the surface, changing from superoleophilic to superoleophobic. The trapped air in the grooves of the superamphiphobic surface can cause the significant change of the three-phase contact line (TCL).

2013
Daisuke Ishii Hiroko Horiguchi Yuji Hirai Hiroshi Yabu Yasutaka Matsuo Kuniharu Ijiro Kaoru Tsujii Tateo Shimozawa Takahiko Hariyama Masatsugu Shimomura

Some small animals only use water transport mechanisms passively driven by surface energies. However, little is known about passive water transport mechanisms because it is difficult to measure the wettability of microstructures in small areas and determine the chemistry of biological surfaces. Herein, we developed to directly analyse the structural effects of wettability of chemically modified...

2017
Zihe Pan Fangqin Cheng Boxin Zhao

It is not unusual for humans to be inspired by natural phenomena to develop new advanced materials; such materials are called bio-inspired materials. Interest in bio-inspired polymeric superhydrophilic, superhydrophobic, and superoleophobic materials has substantially increased over the last few decades, as has improvement in the related technologies. This review reports the latest developments...

Journal: :Journal of the American Chemical Society 2004
Qiang Fu G V Rama Rao Solomon B Basame David J Keller Kateryna Artyushkova Julia E Fulghum Gabriel P López

We describe a facile method for the formation of dynamic nanostructured surfaces based on the modification of porous anodic aluminum oxide with poly(N-isopropyl acrylamide) (PNIPAAm) via surface-initiated atom transfer radical polymerization. The dynamic structure of these surfaces was investigated by atomic force microscopy (AFM), which showed dramatic changes in the surface nanostructure abov...

2016
Qi Sun Hongming He Wen-Yang Gao Briana Aguila Lukasz Wojtas Zhifeng Dai Jixue Li Yu-Sheng Chen Feng-Shou Xiao Shengqian Ma

The sophisticated control of surface wettability for target-specific applications has attracted widespread interest for use in a plethora of applications. Despite the recent advances in modification of non-porous materials, surface wettability control of porous materials, particularly single crystalline, remains undeveloped. Here we contribute a general method to impart amphiphobicity on single...

2009
Shigeo Maruyama

Japan Several patterned growth techniques of single-walled carbon nanotubes (SWNTs) by modifing the dip-coating process are discussed. The conventional concept of using SiO2 patterned Si substrates to selectively grow 3D carbon nanotube structures can be applied to a dip-coating method followd by alcohol CVD growth. High-quality vertically aligned single-walled carbon nanotube (SWNT) patterns c...

2011
Fatima Maria NAMEN Eduardo FERRANDINI João GALAN JUNIOR

OBJECTIVE This study evaluated the surface energy and wettability of composite resins polymerized by different light-curing units to ascertain the good wetting of tooth surfaces to achieve adhesion. MATERIAL AND METHOD Filtek Z350 (3M ESPE), Admira (VOCO) and Grandio (VOCO) resins were selected for the testing procedures. The resins were light cured using LED and Halogen devices. Contact angl...

2017
Yu-Jin Zeng Sheng-Chen Twan Kuan-Wen Wang Her-Hsiung Huang Yen-Bin Hsu Chien-Ying Wang Ming-Ying Lan Sheng-Wei Lee

This study first investigates the biocompatibility of self-organized TaO x nanotube arrays with different nanotube diameters fabricated by electrochemical anodization. All as-anodized TaO x nanotubes were identified to be an amorphous phase. The transition in surface wettability with TaO x nanotube diameters can be explained based on Wenzel's model in terms of geometric roughness. In vitro bioc...

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