Strain-induced wrinkling of a stiff skin on a soft base layer is emerging as a powerful bottom-up method to realize ordered and disordered patterns across an entire surface. We have […]
Plasmon lasers can support ultrasmall mode confinement and ultrafast dynamics with device feature sizes below the diffraction limit. However, most plasmon-based nanolasers rely on solid gain materials (inorganic semiconducting nanowire […]
Plasmonic nanoparticles (NPs) arranged into assemblies can manipulate near-field profiles and modify far-field characteristics compared to a single NP. The ability to tune each nanoparticle in a plasmonic assembly can […]
Apt-AuNS nanoconstructs composed of two primary components, an anisotropic gold nanostar (AuNS) core and a shell of secondary structure aptamer, AS1411, have shown great potential in cancer treatment. The high […]
Nanotexturing polymeric surfaces changes their surface properties while their bulk properties remain unchanged. Wrinkles and folds can increase the efficiency and mechanical stability of optical and electrical devices. We have […]
Direct visualization of interactions between drug-loaded nanoparticles and the cancer cell nucleus is crucial for understanding the mechanism behind cancer cell death. Nanoconstructs composed of nucleolin-specific aptamers and gold nanostars […]
Solid-state photolithography (SSP) enables the capabilities of one of the most important tools in nano- and microfabrication, the mask aligner, to be performed on the benchtop. SSP can create patterns […]
Two images of ours were selected for the FY2011 Budget Supplement: (1) A dark field optical image of cancer cells decorated with gold nanopyramids via antibodies on the pyramid surface […]
We are investigating the optical properties of 3D anisotropic plasmonic particles. Recently, we have designed a way to create nested Au pyramidal nanoshells. These particles exhibit two plasmon resonances at […]
We are working on a new class of asymmetric metal particles: nanofabricated pyramids. Because their nanofabrication procedure is extremely versatile, pyramids are ideal for designing multifunctional plasmonic materials that have […]