Patrick C. Smith

TL;DR: On conducting substrates, colloid monolayers are electrochemically addressable and behave like a collection of closely spaced microelectrodes, which suggest a widespread use for metal colloid-based substrates.

TL;DR: In this paper, the particle sticking probability p, defined as the ratio of bound particles to the number of particles reaching the surface in a given time period, can be determined from a knowledge of the particle radius, solution concentration, temperature, and solution viscosity; for surfaces derivatized with (3-mercaptopropyl)trimethoxysilane (MPTMS), p ≈ 1.

TL;DR: The effect of colloidal Au nanoparticle immobilization on surface plasmon resonance (SPR) reflectivity is reported in this paper, where the authors show that colloidal nanoparticles on an evaporated Au film results in a large shift in the plasmin resonance angle, a broadening of the surface resonance, and an increase in minimum reflectance.

TL;DR: In this paper, an electrochemical approach to the manufacture of submicron metal barcodes for application as identification tags is described, which can be read out via optical microscopy, and allows for the synthesis of large numbers of distinguishable tags.

TL;DR: These particles are metallic, encodeable, machine-readable, durable, submicron-sized tags, which can act as encoded substrates in multiplexed assays.