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Dip-pen Nanolithography
"Click" Chemistry
Figures/Results
Experimental
Surface Chemistry Techniques
100
"A scanning-probe, direct-write technology whereby molecular transport within a meniscus is used to deliver chemical agents in a deliberate, local pattern onto a solid surface" -Long et. al, 2007
What is Dip-pen Nanolithography?
100
"This a broad class of coupling reactions." -Long et. al, 2007
What is "Click" Chemistry?
100
Method used to detect changes in surface composition if distinct changes in topography were not detected -no height differences shown in images
What is lateral force microscopy?
100
Treat with APTES
What is silanization?
100
Invented in 1986 by Binnig, Quate and Gerber. It is a very high-resolution type of scanning probe microscopy, with demonstrated resolution on the order of fractions of a nanometer, more than 1000 times better than the optical diffraction limit
What is atomic force microscopy?
200
The year Dip-pen nanolithography was first published
What is 1999 ?
200
4-pentynoic acid
What is the alkyne?
200
Formed by scanning the surface with the AFM in contact mode at a specified velocity.
What is lines?
200
Treat with UV/ozone
What is oxidation?
200
Developed by Gerd Binnig and Heinrich Rohrer in the early 1980s at IBM Research. An instrument for imaging surfaces at the atomic level.
What is scanning tunneling microscope?
300
Mirkin and his coworkers
What is the group that holds patents on the DPN process?
300
N3-R
What is an azide?
300
Formed by holding the AFM tip in contact with a selected surface point for a specified time.
What is dots?
300
The product of the free alkyne plus azide reaction
What is a triazole?
300
A microscopic technique for nanostructure investigation that breaks the far field resolution limit by exploiting the properties of evanescent waves. E.H. Synge, a scientist, is given credit for conceiving and developing the idea for an imaging instrument that would image by exciting and collecting diffraction in the near field.
What is Near-field scanning optical microscopy?
400
Small molecules that are coated onto a DPN tip and are delivered to the surface through a water meniscus -Mirkin and coworkers use it
What is molecular ink?
400
catalyst that ensures 1,4 regioselectivity
What is Cu?
400
Characteristic desired for high throughput dip-pen experiments which are normally limited to less than 500 nm s-1 by the rate of meniscus formation at the tip-sample interface.
What are fast write rates?
400
Used to write the azide
What is the AFM tip?
400
A microscopy technique whereby a beam of electrons is transmitted through an ultra thin specimen, interacting with the specimen as it passes through. An image is formed from the interaction of the electrons transmitted through the specimen; the image is magnified and focused onto an imaging device, such as a fluorescent screen, on a layer of photographic film, or to be detected by a sensor such as a CCD camera.
What is transmission electron microscopy?
500
Any material that is liquid at deposition conditions -Ex: Protein, peptide, and DNA patterning
What is liquid ink?
500
The process of selectively choosing the reaction site on a surface with the precision of an AFM using an azide and alkyne.
What is click DPN?
500
DOUBLE JEOPARDY: Forms an amide bond in this reaction. Hint: NH2 + ?
What is the COOH terminal group of 4-pentynoic acid?
500
The base used during writing
What is N,N-Diisopropylethylamine (DIPEA)?
500
A type of electron microscope that images a sample by scanning it with a high-energy beam of electrons in a raster scan pattern. The electrons interact with the atoms that make up the sample producing signals that contain information about the sample's surface topography, composition, and other properties such as electrical conductivity.
What is scanning electron microscopy?