The surface parameters modifications at nano scale for biomedical applications

Float Glass Surface Preparation Methods for Improved Chromium Film Adhesive Bonding

“…The increase of energy and decrease of contact angle usually correlates directly with improved adhesion. For the glass substrates contact angles (water) change in the range 34° -36.5° as reported in [26] and [27]. After application of the RCA-1 clean the glass surface wettability is increased, displaying low contact angles 2° ±2° as observed in the previous studies [10] and [28].…”

“…As shown in Fig. 1, the contact angles obtained by control method were obtained by ~10° lower comparing to as-obtained glass in [26] and [27]. Methods 2 -4 and 7 revealed the best results, where surfaces were free of hydrophobic contaminants with low contact angles ranging from 4° to 8°.…”

Highly energy-efficient and air-stable organic transistors by an ultrathin hybrid dielectric with large internal voltage generation

“…The gate electrode was then treated using oxygen plasma at 200 W power and 50 mbar pressure for 15 s, forming a thin AlO x layer with -OH and/or -O À surface active groups. Compared with native AlO x with a high water contact angle of approximately 60 to 70 , 46 the prepared AlO x -OH layer has a water contact angle of only 25 , conrming the result. A thermally cured crosslink-PVP layer was spincoated from 1 wt% n-butanol solution with a blend of PVP (M w of 22 000 g mol À1 ) and PMF (M w of 511 g mol À1 ) at a 2 : 1 weight ratio and heated at 150 C for 20 min to observe the CSDE dielectrics.…”

Review: physico-chemical modification as a versatile strategy for the biocompatibility enhancement of biomaterials

“…Parameters such as cell adhesion and proliferation involved in the interaction mechanism of the modied surface with biological substances can also be controlled in the nanoscale. 15 The surface coating with nanoparticles decreases the negative properties of the material and enhances the osteoblast cell adhesion and proliferation, as compared with microparticle coatings. It has been noted that the smooth surface on a microlevel surface modication is not necessarily needed to be smooth in nanolevel modication.…”