Dip-Pen Nanolithography

Dip Pen Nanolithography (DPN) is a scanning probe lithography technique where an atomic force microscope tip is used to transfer molecules to a surface via a solvent meniscus. Scanning probe lithography describe a set of lithographic methods in which a microscopic or nanoscopic stylus is moved mechanically across a surface to form a pattern The atomic force microscope (AFM or scanning force microscope (SFM is a very high-resolution type of scanning probe microscope, with demonstrated resolution of fractions A solvent is a liquid or gas that dissolves a solid liquid or gaseous Solute, resulting in a Solution. For other uses see Meniscus (anatomy and lens (optics. Meniscus, plural menisci, from the Greek for "crescent" This technique allows surface patterning on scales of under 100 nano metres. The metre or meter is a unit of Length. It is the basic unit of Length in the Metric system and in the International DPN is the nanotechnology analog of the dip pen (also called the quill pen), where the tip of an atomic force microscope cantilever acts as a "pen," which is coated with a chemical compound or mixture acting as an "ink," and put in contact with a substrate, the "paper. Nanotechnology, sometimes shortened to nanotech, refers to a field of Applied science whose theme is the control of matter on an Atomic and Molecular A dip pen (also sometimes called a " Nib pen" usually consists of a metal nib with capillary channels like those of Fountain pen Quill is a high level object oriented Programming language created by the Dutch software company Quintiq. A cantilever is a beam supported on only one end The beam carries the load to the support where it is resisted by moment and Shear stress. "

DPN enables direct deposition of nanoscale materials onto a substrate in a flexible manner. The vehicle for deposition can include pyramidal scanning probe microscope tips, hollow tips, and even tips on thermally actuated cantilevers. Scanning probe microscopy (SPM is a branch of Microscopy that forms images of surfaces using a physical probe that scans the specimen Recent advances have demonstrated massively parallel patterning using two-dimensional arrays of 55,000 tips, depicted below. Applications of this technology currently range through chemistry, materials science, and the life sciences, and include such work as ultra high density biological nanoarrays, additive photomask repair, and brand protection for pharmaceuticals. Chemistry (from Egyptian kēme (chem meaning "earth") is the Science concerned with the composition structure and properties Materials Science or Materials Engineering is an interdisciplinary field involving the properties of matter and its applications to various areas of Science and Foundations of modern biology There are five unifying principles A photomask is an opaque plate with holes or transparencies that allow light to shine through in a defined pattern

The technique was developed in 1999 by a research group at Northwestern University led by Chad Mirkin [1]. Chad A Mirkin is a Northwestern University professor He is the George B The company NanoInk, Inc. NanoInk, Inc is an emerging growth Nanotechnology company headquartered in Skokie IL, with a MEMS fabrication facility in Campbell CA holds a patent on Dip Pen Nanolithography, and "DPN" and "Dip Pen Nanolithography" are trademarks or registered trademarks of NanoInk.

Image:2D_dpn_schematic.jpg

References

Piner, R. D. ; Zhu, J. ; Xu, F. ; Hong, S. ; Mirkin, C. A. "Dip Pen Nanolithography," Science, 1999, 283, 661-663.
Science, 2002, 295, 1702-1705 DOI: 10. 1126/science. 1067172
Dip Pen Nanolithography subgroup at Northwestern University

References

See also