................................................................................................................................ vii CHAPTER 1. GENERAL INTRODUCTION ............................................................................ 1 1.1 Motivation .................................................................................................................. 1 1.2 Thesis Organizati...

While the field of plasmonics has grown significantly in recent years, the relatively high losses and limited material choices have remained a challenge for the development of many device concepts. The decay of plasmons into hot carrier excitations is one of the main loss mechanisms; however, this process offers an opportunity for the direct utilization of loss if excited carriers can be collec...

Plasmonics in topological semimetals offer exciting opportunities for fundamental physics exploration as well technological applications. Here, we investigate plasmons the exemplar chiral crystal CoSi, which hosts a variety of multifold fermionic excitations. We show that CoSi two distinct plasmon modes infrared regime at 0.1 and 1.1 eV long-wavelength limit. The is found to be highly dispersiv...

Graphene plasmons have recently been proposed as an alternative to noble-metal plasmons in the field of photonics, due to its extremely tight light confinement, relatively long-lived collective oscillation, and high tunability via electrostatic gating. Successful support and tuning of graphene plasmonic modes rely on controllable doping of graphene to high carrier densities in nanometer-scale s...

The nonoxidizing catalytic noble metal rhodium is introduced for ultraviolet plasmonics. Planar tripods of 8 nm Rh nanoparticles, synthesized by a modified polyol reduction method, have a calculated local surface plasmon resonance near 330 nm. By attaching p-aminothiophenol, local field-enhanced Raman spectra and accelerated photodamage were observed under near-resonant ultraviolet illumination...

Surface- and tip-enhanced Raman and LSPR spectroscopies have developed over the past 15 years as unique tools for uncovering the properties of single particles and single molecules that are unobservable in ensemble measurements. Measurements of individual events provide insight into the distribution of molecular properties that are averaged over in ensemble experiments. Raman and LSPR spectrosc...

One of the best-known trends in technology is Moore’s law, which predicts that the number of transistors in a central processing unit (CPU) will double every two years. It has guided the long-term strategy of the semiconductor industry since 1965, but is quickly reaching its limits due to fundamental size constraints on transistors. Currently available CPUs have a gate length of approximately 2...

Exploiting capillarity, a new microfluidic platform enables the placement of multiple colloidal particles into complex patterns within microchannel, as required in variety applications, including electronics, sensing, and plasmonics.