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Physical Colors By Nanoparticle Resonant Color Pigments For High-Quality Printing Processes

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We are describing two methods of making physical colors. First we consider resonant excitation of high dielectric constant nanospheres (for example Si) coupled with absorption of the entrapped radiation. Alternatively we use absorption in metallic spheres, which exhibit negative real parts of the dielectric constant. Peak absorption occurs where the negative real part of the dielectric constant equals twice the positive dielectric constant of the surrounding medium. Absorption can be must larger than what could be achieved in conventional pigments leading to smaller required total volume of pigment.

Document Type: Research Article

Publication date: January 1, 2001

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  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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