Homebrew PCBs

20nm silver nanoparticles sprayed from Brother inkjet on glossy 
photopaper, PET, other substrates.

Next problem, gluing the chip on. They suggest silver epoxy or 
conductive double-sided adhesive.

References Article:
Instant Inkjet Circuits: Lab-based Inkjet Printing to Support Rapid 
Prototyping of UbiComp Devices
http://dl.acm.org/ft_gateway.cfm?id=2493486&ftid=1392308&dwn=1&CFID=267854535&CFTOKEN=14451111

from:
http://dl.acm.org/citation.cfm?id=2493486

Power Electronics article about:
http://powerelectronics.com/blog/georgia-tech-develops-low-cost-circuits-printable-inkjet-printers?NL=PET-01&Issue=PET-01_20131204_PET-01_56&YM_RID=obnoxium@...&YM_MID=1437369&sfvc4enews=42&cl=article_1

Abstract:
> This paper introduces a low cost, fast and accessible technology to 
> support the rapid prototyping of functional electronic devices. 
> Central to this approach of 'instant inkjet circuits' is the ability 
> to print highly conductive traces and patterns onto flexible 
> substrates such as paper and plastic films cheaply and quickly. In 
> addition to providing an alternative to breadboarding and conventional 
> printed circuits, we demonstrate how this technique readily supports 
> large area sensors and high frequency applications such as antennas. 
> Unlike existing methods for printing conductive patterns, conductivity 
> emerges within a few seconds without the need for special equipment. 
> We demonstrate that this technique is feasible using commodity inkjet 
> printers and commercially available ink, for an initial investment of 
> around US$300. Having presented this exciting new technology, we 
> explain the tools and techniques we have found useful for the first 
> time. Our main research contribution is to characterize the 
> performance of instant inkjet circuits and illustrate a range of 
> possibilities that are enabled by way of several example applications 
> which we have built. We believe that this technology will be of 
> immediate appeal to researchers in the ubiquitous computing domain, 
> since it supports the fabrication of a variety of functional 
> electronic device prototypes.