Plasma immersion ion implantation of polyurethane shape memory polymer: Surface properties and protein immobilization

2017 ◽  
Vol 416 ◽  
pp. 686-695 ◽  
Author(s):  
Xinying Cheng ◽  
Alexey Kondyurin ◽  
Shisan Bao ◽  
Marcela M.M. Bilek ◽  
Lin Ye
Keyword(s):  
Ion Implantation ◽  
Shape Memory ◽  
Surface Properties ◽  
Shape Memory Polymer ◽  
Polymer Surface ◽  
Protein Immobilization ◽  
Plasma Immersion Ion Implantation

FORMATION OF COMBINED SURFACE FEATURES OF PROTRUSION ARRAY AND WRINKLES ATOP SHAPE-MEMORY POLYMER

2009 ◽  
Vol 16 (06) ◽  
pp. 929-933 ◽  
Author(s):  
L. SUN ◽  
Y. ZHAO ◽  
W. M. HUANG ◽  
T. H. TONG
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymer ◽  
Polymer Surface ◽  
Cost Effective ◽  
Gold Layer ◽  
Surface Features ◽  
Cost Effective Approach ◽  
Different Types ◽  
Sputter Deposited ◽  
Steel Balls

We demonstrate a simple and cost-effective approach to realize two combined surface features of different scales together, namely submillimeter-sized protrusion array and microwrinkles, atop a polystyrene shape-memory polymer. Two different types of protrusions, namely flat-top protrusion and crown-shaped protrusion, were studied. The array of protrusions was produced by the Indentation-Polishing-Heating (IPH) process. Compactly packed steel balls were used for making array of indents. A thin gold layer was sputter deposited atop the polymer surface right after polishing. After heating for shape recovery, array of protrusions with wrinkles on the top due to the buckling of gold layer was produced.

A study on the Surface Properties of Nitrogen Implanted H13 Steel by Plasma Immersion Ion Implantation

2006 ◽  
Vol 118 ◽  
pp. 275-280
Author(s):  
Y.Z. You ◽  
D.I. Kim ◽  
H.G. Chun
Keyword(s):  
Surface Roughness ◽  
Ion Implantation ◽  
Surface Properties ◽  
Photoelectron Spectroscopy ◽  
Surface Hardness ◽  
Wear Loss ◽  
Wear Property ◽  
H13 Steel ◽  
Near Surface ◽  
Plasma Immersion Ion Implantation

The near surface of the H13 steel was implanted by using Plasma immersion ion implantation (PIII) system at constant bias voltage of −20 kV with varying nitrogen (N+ ) ion dose (3, 6, 9, 12, 15×1017 ions/cm2 ). The surface properties of the N+ ion implanted steel were investigated by measuring the microhardness, wear loss and friction coefficient. As increasing N+ ion dose (12×1017 ions/cm2), both wear property and surface hardness were increased. However, these properties were decreased as the incident ion dose increased over 12×1017 ions/cm2. The elemental depth profile and surface roughness were obtained with X-ray photoelectron spectroscopy (XPS) and surface roughness tester, respectively.

Controlled wettability based on reversible micro-cracking on a shape memory polymer surface

Soft Matter ◽  
2016 ◽  
Vol 12 (10) ◽  
pp. 2708-2714 ◽  
Author(s):  
Yu Han ◽  
Yuxuan Liu ◽  
Wenxin Wang ◽  
Jinsong Leng ◽  
Peng Jin
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymer ◽  
Polymer Surface
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