NanoPlasmonics, Microphotonics & Imaging

Research that includes:

  • Polymer, printed optical lenslet arrays
  • Microfluidic tuneable photopolymer lenses
  • Optical switches and planar lightwave MEMS
  • Vertically integrated microconfocal arrays
  • Bio-inspired integration of tuneable polymer optics with imaging electronics

BPN337: Fast, MEMS-Based Phase-Shifting Interferometer

Hyuck Choo
Rishi Kant
David Garmire

We are developing a handheld bio-chemical sensor using the fast, MEMS-based, phase-shifting interferometer (MBPSI) that we have demonstrated at the Berkeley Sensor & Actuator Center.

Project end date: 08/12/08

BPN429: Plasmonic Nanocrescent Array for Ultrasensitive Biomoleculer Detection

Liz Y. Wu
SoonGweon Hong

Previously, we developed novel gold nanophotonic crescent moon structures with a sub-10 nm sharp edge, which can enhance local electromagnetic field at the edge area. In this project, we present a uniform array of the gold nanocrescents to generate stronger local electromagnetic field by summing up the effects of inter-particle and intra-particle electromagnetic field coupling. Stronger surface enhancement Raman scattering (SERS) signal is expected from the nanocrescent array due to the high density of the “hot spots”. The long-term goal of this project is to apply this uniform...

BPN423: Heterogeneous integration of microdisk laser on a silicon platform using lateral-field OET assembly

Ming-Chun (Jason) Tien
Kyoungsik Yu

Semiconductor lasers on a silicon platform have attracted much attention due to the potential of integration with CMOS integrated circuits. Silicon Raman lasers have been demonstrated, however, they still require external optical pumps. Heteroepitaxy can grow compound semiconductor lasers directly on Si, but the growth temperature (> 400oC) is usually too high for post CMOS processing. To circumvent this issue, electrically-pumped compound-silicon hybrid lasers have been integrated on Si wafers utilizing oxygen plasma-assisted wafer bonding or DVS-BCB-assisted bonding techniques....

BPN422: Nanophotonic Supported Lipid Bilayers

Christopher E. Korman

The lipid bilayer membrane is crucial to the proper functioning of biological processes. It not only secludes a cell’s contents from the surrounding environment, but the membrane itself also serves as a dynamic scaffold for membrane proteins. The lipid membrane’s thickness is of nanoscale dimension, thus making it an ideal structure for nano and micro bioengineering applications. My research of biological membranes is two-fold. The first objective is to engineer a microfluidic structure that serves as learning tool for understanding the fundamental mechanical behavior of lipid...

BPN471: Nanogap Plasmonic Mirror Structure for Surface Enhanced Spectroscopy

Benjamin Ross
Jason Silver

We intend to show that by engineering a plasmonic mirror between a metallic substrate and gold nanoparticles, high local electromagnetic field enhancement can be achieved. Furthermore, we hope to achieve the structure on a wafer level scale with inexpensive "bottom up" technologies.

Project end date: 08/11/09

DAH3: Single-Crystal PMN Bimorph Deformable Mirrors

Hyunkyu Park

This project is focused on characterizing and modeling MEMS deformable mirrors for adaptive optics. We are interested in improving both the design and control of these mirrors as well as in developing new characterization and wavefront sensing methods. Although this project is presently targeted towards the vision science applications of adaptive optics, we are also interested in other applications requiring high-speed correction.

Project end date: 08/20/09

BPN447: BioMolecular Plasmonics of 'Nanocrown'

SoonGweon Hong
Yeonho Choi

There is intense interest in electromagnetic fields in nanoscale metal structures because the difference of optical properties from bulk material is useful for biological and chemical sensing application. To control light-metal interaction, delicate fabrication such as electron-beam lithography and self-assembly, is necessary for waveguides below the diffraction limit of light. In this project, optimization of the nanostructure called 'nanocrown' based on template by mechanical, chemical and electrical self-assembly will be studied.

Project end date: 01/30/10

BPN515: Nanoplasmonic Antenna on Hexagonal Mirror Array for SERS

Eric P. Lee
YoungGeun Park
Yeonho Choi
SoonGweon Hong

In recent years, SERS has been researched actively in order to develop label-free chemical, biological, medical, or environmental detections. This project addresses the SERS enhancement generated through the self-assembly of gold nanoplasmonic particles on a curved hexagonal mirror array to achieve highly sensitive probes. Self ordering anodic aluminum oxide coated with a thin layer of gold will serve as the curved hexagonal mirror array as well as a template for the self assembly of the nanoparticles. The SERS substrates utilize coupling between the continuous metal, mirror film and...

BPN516: Sensing Biomolecules through Crescent-Shaped Nanoholes

Liz Y. Wu
Benjamin M. Ross

In this project we present the first demonstration of large-area crescent-shaped random nanohole arrays in gold film and test their capability for biosensing. Since the discovery of extraordinary transmission of light through subwavelength holes, much attention has been devoted to understanding the role of material properties, film thickness, hole geometry, and relative hole placements in the optical response of hole and hole arrays. Recently, it has been shown that such structures utilize local surface plasmon resonances (LSPR) of the nanohole structures to focus electromagnetic...

BPN522: Formation of Optical Nanostructures Using Diblock Copolymers

Joanne C. Lo

Nanoscale plasmonic structures are at the forefront of innovations in biomolecular and chemical detection, nanoscale lithography, optical computing, and photovoltaic conversion. This project will focus on the design, fabrication, and operation of plasmonic structures. Fabrication will include an appropriate mix of top-down (e.g. nanoimprint lithography) and bottom-up (e.g. block copolymers) methods. Low-cost, batch-fabrication methods will serve as the foundation of this research.

Project end date: 02/03/10