Printing techniques contact methods

The use of P.O.P. is a time-honored method for making inexpensive prints without a darkroom. The printing technique is simple the coated paper is contact-printed with a negative using the sun for a light source to make a visible image without development (a UV lamp, available from grocery and hardware stores, can also be used). 

Within the broad category of "printed electronics", there are various technologies for manufacturing conductive components, of which inkjet is one of them. These printing techniques are compared to each other in Table 3. Inkjet is the most commercially suitable of these methods for apphcations where rapid customization is required and where the substrate is dehcate or otherwise sensitive to direct contact. 

For the production of different types of microarrays, a wide variety of microarray production techniques and specialized microarrayers are available. This entiy will focus on the three basic techniques commOTily used on-chip synthesis, contact printing techniques, and non-contact printing techniques. In the following, currently available microarray production methods are presented, but the discussicm does not claim to be exhaustive. 

In the microarray industry, the most commonly used techniques to pattern biologically active molecules are robotic contact printing or ink-jet printing. In general, these methods can fabricate biochips with thousands of different compounds, which can be analyzed simultaneously. The most commonly spotted biomolecules include oligonucleotides,1 proteins,2 and carbohydrates.3 Microarray-based platforms have... 

Burkert K, Neumann T, Wang JJ, Jonas U, Knoll W, Ottleben H (2007) Automated preparation method for colloidal crystal arrays of monodisperse and binary colloid mixtures by contact printing with a pintool plotter. Langmuir 23 3478 Park J, Moon J, Shin H, Wang D, Park M (2006) Direct-write fabrication of colloidal photonic crystal microarrays by ink-jet printing. J Colloid Interface Sci 298 713 Gu ZZ, Kubo S, Fujishima A, Sato O (2002) Infiltration of colloidal crystal with nanoparticles using capillary forces a simple technique for the fabrication of films with an ordered porous structime. Appl Phys A 74 127... 

Adamantanethiolate molecules have been used in a new patterning technique (microdisplacement printing) to form self-assembled mono-layers (SAMs) on an Au(lll) surface for contact printing. The attached thiolate molecular film hinders lateral surface diffusion of the patterning molecules allowing the use of such molecules which are too mobile to pattern by other methods. It is used for SAMs Cat 659452-5G molecular spacer in nanotechnology [ J Org Chem 72 7794 2007, Dameron et al. Nano Lett 5 1834 2005],... 

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