A5101934321- Random lasers and scattering media
- Photonic Crystals and Applications
- Photonic and Optical Devices
- Mechanical and Optical Resonators
- Magneto-Optical Properties and Applications
- Fern and Epiphyte Biology
- GaN-based semiconductor devices and materials
- Orbital Angular Momentum in Optics
- Neural Networks and Reservoir Computing
- Ga2O3 and related materials
- ZnO doping and properties
- Metamaterials and Metasurfaces Applications
Pennsylvania State University
2018-2020
Honeywell (United States)
2018
Northeastern University
2018
National Sun Yat-sen University
2017
National Cheng Kung University
2010
Although there have been intense efforts to fabricate large three-dimensional photonic crystals in order realize their full potential, the technologies developed so far are still beset with various material processing and cost issues. Conventional top-down fabrications costly time-consuming, whereas natural self-assembly bottom-up often result high defect density limited dimensions. Here we report fabrication of extraordinarily monocrystalline by controlling processes which occur unique...
A whispering gallery mode resonator based magnetometer using chip-scale glass microspherical shells is described. neodynium micro-magnet elastically coupled and integrated on top of the shell structure that enables transduction magnetic force experienced by magnet in external fields into an optical resonance frequency shift. High quality factor resonators with ultra-smooth surfaces have been successfully fabricated magnets to achieve Q-factors greater than 1.1 × 107 shown a shift 1.43 GHz/mT...
Top-down fabrication is commonly used to provide positioning control of optical structures; yet, it places stringent limitations on component materials, and oftentimes, dynamic reconfigurability challenging realize. Here, we present a reconfigurable nanoparticle platform that can integrate heterogeneous particle assembly different shapes, sizes, chemical compositions. We demonstrate disorder in this use tune random laser emission characteristics for suspension titanium dioxide nanowires dye...
The growth and optical properties of GaN nanorods grown by plasma-assisted molecular beam epitaxy are investigated as a function temperature with without the presence an AlN buffer. When on bare Si(111), increase in leads to reduction nanorod diameter density. diffusion-induced mechanism has greater impact enhancing buffer surface compared that Si(111). density is influenced can be controlled varying temperature. low achieved altering size.
Light scattering is typically undesired in optical systems as it often introduces defects or otherwise negatively impacts device performance. However, rather than being a hindrance, can also be exploited to achieve lensless imaging using mask instead of lenses enable devices with low-cost, compact construction, and yet large field view. Lensless benefit greatly from the ability dynamically tune pattern produced by mask; however, this results increased complexity cost. Herein, we propose...