Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Timothy W. Johnson"'
Autor:
Edward S. Small, Timothy W. Johnson
Making the case for the significance of experimental motion pictures Undulating water patterns; designs etched or painted directly onto clear or black film leader; computer-generated, pulsating, multihued light tapestries—the visual images that oft
Publikováno v:
The journal of the Royal College of Physicians of Edinburgh. 49(4)
Publikováno v:
ACS Photonics. 3:1202-1207
We fabricate a new type of plasmonic resonator, called a cup resonator, consisting of a single nanohole and a cylindrical surrounding reflector. This device is made using template stripping, which creates a smooth silver surface for the base along wi
Publikováno v:
Analytical Chemistry. 88:1704-1710
Chemical analysis of membrane-bound containers such as secretory vesicles, organelles, and exosomes can provide insights into subcellular biology. These containers are loaded with a range of important biomolecules, which further underscores the need
Publikováno v:
ACS Nano
ACS Nano, 9 (11)
ACS Nano, 9 (11)
We use template stripping to integrate metallic nanostructures onto flexible, stretchable, and rollable substrates. Using this approach, high-quality patterned metals that are replicated from reusable silicon templates can be directly transferred to
Autor:
Sang Hyun Oh, Fredrik Höök, Andreas B. Dahlin, Jonah Shaver, Francesco Mazzotta, Timothy W. Johnson
Publikováno v:
ACS Photonics. 2:256-262
We evaluate and compare the sensitivity of gold nanodisks on silica substrates and nanoholes made in silica-supported gold films, two of the most common sensor structures used in plasmonic biosensing. An alumina overcoat was applied by atomic layer d
Publikováno v:
Nanoscale. 7:4226-4233
We present quantitative, spectroscopic polarization interferometry phase measurements on plasmonic surfaces for sensing applications. By adding a liquid crystal variable wave plate in our beam path, we are able to measure phase shifts due to small re
Autor:
Daehan Yoo, Mo Li, Sang Hyun Oh, Ruoming Peng, Timothy W. Johnson, Che Chen, Daniel A. Mohr, Nathan Youngblood
Publikováno v:
Nano letters. 17(2)
We demonstrate the integration of a black phosphorus photodetector in a hybrid, three-dimensional architecture of silicon photonics and metallic nanoplasmonics structures. This integration approach combines the advantages of the low propagation loss
Publikováno v:
Chemistry of Materials
We present metallic nanohole arrays fabricated on suspended membranes as an optofluidic substrate. Millimeter-sized suspended nanohole arrays were fabricated using nanoimprint lithography. We demonstrate refractive-index-based tuning of the optical s
Autor:
Jonah Shaver, Sang Hyun Oh, Stephan J. P. Kress, J. Jose, Palash Bharadwaj, Lauren M. Otto, Avijit Barik, Timothy W. Johnson, Lukas Novotny, Zachary J. Lapin
Publikováno v:
ACS Photonics
Gradient fields of optical, magnetic, or electrical origin are widely used for the manipulation of micro- and nanoscale objects. Among various device geometries to generate gradient forces, sharp metallic tips are one of the most effective. Surface r