Patterning of proteins into nanostripes on Si-wafer over large areas: a combination of Langmuir–Blodgett patterning and orthogonal surface chemistry

Soft Matter ◽  
2011 ◽  
Vol 7 (3) ◽  
pp. 861-863 ◽  
Author(s):  
Yong Li ◽  
Julia C. Niehaus ◽  
Yueyue Chen ◽  
Harald Fuchs ◽  
Armido Studer ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Langmuir Blodgett ◽  
Orthogonal Surface ◽  
Si Wafer

Surface Chemistry and Spectroscopic and Microscopic Properties of Organophosphorus Hydrolase Langmuir and Langmuir−Blodgett Films

Langmuir ◽  
2002 ◽  
Vol 18 (20) ◽  
pp. 7616-7622 ◽  
Author(s):  
Xihui Cao ◽  
Sarita V. Mello ◽  
Guodong Sui ◽  
Mustapha Mabrouki ◽  
Roger M. Leblanc ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Organophosphorus Hydrolase ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

The Relationship Between Surface Chemistry and Photoluminescence of Porous Silicon

1993 ◽  
Vol 298 ◽  
Author(s):  
Kun-Hsi Li ◽  
Chaochieh Tsai ◽  
Joe C. Campbell ◽  
Milan Kovar ◽  
John M White
Keyword(s):  
Surface Chemistry ◽  
Marked Decrease ◽  
Blue Shift ◽  
Surface Species ◽  
Silicon Hydride ◽  
Porous Si ◽  
Luminescence Process ◽  
The Relationship ◽  
Green Photoluminescence ◽  
Si Wafer

AbstractGreen photoluminescence (PL) is observed from an as-anodized porous Si wafer immersed in the anodization electrolyte and the PL turns red after the sample is removed from the electrolyte and is blown dry. The PL of porous Si immersed in alcohol exhibits a blue shift and a marked decrease in intensity relatively to dry, as-anodized wafers. However, when the immersed samples are treated with UV for a few minutes, the PL peak shifts to a longer wavelength. Fourier-transform infrared spectroscopy reveals that alkoxy surface species and silicon hydride species backbonded to oxygen atoms appear on the UV-treated samples. Furthermore, the PL characteristics and surface species of the UV-treated samples can be recovered to those of as-anodized wafers by dipping in HF. These results point out the importance of surface chemistry in the luminescence process of porous Si.

scholarly journals Exploration of the Direct Use of Anodized Alumina as a Mold for Nanoimprint Lithography to Fabricate Magnetic Nanostructure over Large Area

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
M. Tofizur Rahman ◽  
Hao Wang ◽  
Jian-Ping Wang
Keyword(s):  
Surface Chemistry ◽  
Nanoimprint Lithography ◽  
Pore Diameter ◽  
Large Area ◽  
Self Assembled Monolayer ◽  
Feature Size ◽  
Magnetic Nanostructure ◽  
Self Assembled ◽  
Direct Use ◽  
Si Wafer

We have explored the direct use of anodized alumina (AAO) fabricated on an Si wafer as a mold for the nanoimprint lithography (NIL). The AAO mold has been fabricated over more than 10 cm2area with two different pore diameters of163±24 nm and73±7 nm. One of the key challenges of the lack of bonding between the antisticking self-assembled monolayer (SAM) and the AAO has been overcome by modifying the surface chemistry of the fabricated AAO mold by coating it with thin SiO2layer. Then we have applied the commonly used silane-based self-assembled monolayer (SAM) on these SiO2-coated AAO molds and achieved successful imprinting of resist pillars with feature size of172±25 nm by using the mold with a pore diameter of163±24 nm. Finally, we have achieved (001) oriented L10FePt patterned structure with a dot diameter of42±4 nm by using a AAO mold with a pore diameter of73±7 nm. The perpendicularHcof the unpatterned and patterned FePt is about 3.3 kOe and 12 kOe, respectively. These results indicate that AAO mold can potentially be used in NIL for fabricating patterned nanostructures over large area.

Surface Chemistry Studies on the Formation of Mixed Stearic Acid/Phenylalanine Dehydrogenase Langmuir and Langmuir–Blodgett Films

Langmuir ◽  
2021 ◽  
Author(s):  
Rafael Leonardo Cruz Gomes da Silva ◽  
Shiv K. Sharma ◽  
Suraj Paudyal ◽  
Keenan J. Mintz ◽  
Roger M. Leblanc ◽  
...  
Keyword(s):  
Stearic Acid ◽  
Surface Chemistry ◽  
Langmuir Blodgett ◽  
Phenylalanine Dehydrogenase ◽  
Langmuir Blodgett Films

DNA Electrophoresis on Two-dimensional Arrays of SiO2 Beads

2000 ◽  
Vol 636 ◽  
Author(s):  
Young-Soo Seo ◽  
V.A. Samuilov ◽  
J. Sokolov ◽  
M. Rafailovich ◽  
D. Gersappe ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Surface Friction ◽  
Separation Mechanism ◽  
Two Dimensional ◽  
Langmuir Blodgett ◽  
Silica Bead ◽  
Corrugated Surfaces ◽  
Novel Approach ◽  
Separation Media ◽  
Si Wafer

AbstractA novel approach of fabricating 2-D arrays of SiO2 beads on a Si surface using the Langmuir-Blodgett (LB) technique is reported. The corrugated surfaces were tested as a separation media for surface electrophoresis of DNA molecules. The measured electrophoretic mobility for λ-DNA is only 20% slower than previously measured on a flat Si wafer. This indicates that the separation mechanism is due to surface friction rather than biased reptation as reported by Tinland in the three dimensional Silica bead matrix where the mobility is two orders of magnitude smaller.

New Amphiphilic Tetrathiafulvalene (TTF) Derivatives: Synthesis and Langmuir-Blodgett Filn Formation

1988 ◽  
Vol 156 (1) ◽  
pp. 339-345 ◽  
Author(s):  
FranÇOise Bertho ◽  
Daniel Talham ◽  
Albert Robert ◽  
Patrick Batail ◽  
Stephane Megtert ◽  
...  
Keyword(s):  
Langmuir Blodgett
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