T0501-4-3 Development of Nanoscale Patterning Method of Self-Assembled Monolayer using Near-field Photothermal Desorption

2010 ◽  
Vol 2010.8 (0) ◽  
pp. 109-110
Author(s):  
Yu YAMAMOTO ◽  
Yoshihiro TAGUCHI ◽  
Yuji NAGASAKA
Keyword(s):  
Near Field ◽  
Self Assembled Monolayer ◽  
Nanoscale Patterning ◽  
Self Assembled

scholarly journals Near-field photochemical and radiation-induced chemical fabrication of nanopatterns of a self-assembled silane monolayer

2014 ◽  
Vol 5 ◽  
pp. 1441-1449 ◽  
Author(s):  
Ulrich Christian Fischer ◽  
Carsten Hentschel ◽  
Florian Fontein ◽  
Linda Stegemann ◽  
Christiane Hoeppener ◽  
...  
Keyword(s):  
Chemical Process ◽  
Oxygen Plasma ◽  
Near Field ◽  
General Concept ◽  
Photochemical Reactions ◽  
Self Assembled Monolayer ◽  
Photochemical Process ◽  
Radiation Induced ◽  
Oxygen Plasma Etching ◽  
Self Assembled

A general concept for parallel near-field photochemical and radiation-induced chemical processes for the fabrication of nanopatterns of a self-assembled monolayer (SAM) of (3-aminopropyl)triethoxysilane (APTES) is explored with three different processes: 1) a near-field photochemical process by photochemical bleaching of a monomolecular layer of dye molecules chemically bound to an APTES SAM, 2) a chemical process induced by oxygen plasma etching as well as 3) a combined near-field UV-photochemical and ozone-induced chemical process, which is applied directly to an APTES SAM. All approaches employ a sandwich configuration of the surface-supported SAM, and a lithographic mask in form of gold nanostructures fabricated through colloidal sphere lithography (CL), which is either exposed to visible light, oxygen plasma or an UV–ozone atmosphere. The gold mask has the function to inhibit the photochemical reactions by highly localized near-field interactions between metal mask and SAM and to inhibit the radiation-induced chemical reactions by casting a highly localized shadow. The removal of the gold mask reveals the SAM nanopattern.

scholarly journals Nanoscale patterning of a self-assembled monolayer by modification of the molecule–substrate bond

2014 ◽  
Vol 5 ◽  
pp. 258-267 ◽  
Author(s):  
Cai Shen ◽  
Manfred Buck
Keyword(s):  
Structural Phase ◽  
Lateral Diffusion ◽  
Scanning Tunneling ◽  
Self Assembled Monolayer ◽  
Nanoscale Patterning ◽  
Interfacial Structures ◽  
Self Assembled ◽  
The Difference ◽  
20 Nm ◽  
Induced Defects

The intercalation of Cu at the interface of a self-assembled monolayer (SAM) and a Au(111)/mica substrate by underpotential deposition (UPD) is studied as a means of high resolution patterning. A SAM of 2-(4'-methylbiphenyl-4-yl)ethanethiol (BP2) prepared in a structural phase that renders the Au substrate completely passive against Cu-UPD, is patterned by modification with the tip of a scanning tunneling microscope. The tip-induced defects act as nucleation sites for Cu-UPD. The lateral diffusion of the metal at the SAM–substrate interface and, thus, the pattern dimensions are controlled by the deposition time. Patterning down to the sub-20 nm range is demonstrated. The difference in strength between the S–Au and S–Cu bond is harnessed to develop the latent Cu-UPD image into a patterned binary SAM. Demonstrated by the exchange of BP2 by adamantanethiol (AdSH) this is accomplished by a sequence of reductive desorption of BP2 in Cu free areas followed by adsorption of AdSH. The appearance of Au adatom islands upon the thiol exchange suggests that the interfacial structures of BP2 and AdSH SAMs are different.

scholarly journals Nanoscale patterning of self-assembled monolayer (SAM)-functionalised substrates with single molecule contact printing

Nanoscale ◽  
2017 ◽  
Vol 9 (39) ◽  
pp. 15098-15106 ◽  
Author(s):  
M. Sajfutdinow ◽  
K. Uhlig ◽  
A. Prager ◽  
C. Schneider ◽  
B. Abel ◽  
...  
Keyword(s):  
Single Molecule ◽  
Dna Origami ◽  
Gold Films ◽  
Self Assembled Monolayer ◽  
Contact Printing ◽  
Nanoscale Patterning ◽  
Self Assembled

DNA origami stamps print biomolecules onto SAM-coated gold filmsviabioconjugation in a process called single molecule contact printing.

Near-Field Raman Imaging and Electromagnetic Field Confinement in the Self-Assembled Monolayer Array of Gold Nanoparticles

Langmuir ◽  
2008 ◽  
Vol 24 (17) ◽  
pp. 9241-9244 ◽  
Author(s):  
Mohammad Kamal Hossain ◽  
Toru Shimada ◽  
Masahiro Kitajima ◽  
Kohei Imura ◽  
Hiromi Okamoto
Keyword(s):  
Gold Nanoparticles ◽  
Electromagnetic Field ◽  
Near Field ◽  
Raman Imaging ◽  
The Self ◽  
Self Assembled Monolayer ◽  
Self Assembled

Self-Assembled Fluid Phase Floating Membranes with Tuneable Water Interlayers

2019 ◽  
Author(s):  
Luke Clifton ◽  
Nicoló Paracini ◽  
Arwel V. Hughes ◽  
Jeremy H. Lakey ◽  
Nina-Juliane Seinke ◽  
...  
Keyword(s):  
Fluid Phase ◽  
Interlayer Thickness ◽  
Supported Bilayers ◽  
Self Assembled Monolayer ◽  
High Coverage ◽  
Nano Technology ◽  
Surface Distance ◽  
Potential Applications ◽  
Self Assembled ◽  
Coated Surfaces

<p>We present a reliable method for the fabrication of fluid phase unsaturated bilayers which are readily self-assembled on charged self-assembled monolayer (SAM) surfaces producing high coverage floating supported bilayers where the membrane to surface distance could be controlled with nanometer precision. Vesicle fusion was used to deposit the bilayers onto anionic SAM coated surfaces. Upon assembly the bilayer to SAM solution interlayer thickness was 7-10 Å with evidence suggesting that this layer was present due to SAM hydration repulsion of the bilayer from the surface. This distance could be increased using low concentrations of salts which caused the interlayer thickness to enlarge to ~33 Å. Reducing the salt concentration resulted in a return to a shorter bilayer to surface distance. These accessible and controllable membrane models are well suited to a range of potential applications in biophysical studies, bio-sensors and Nano-technology.</p><br>

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