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Porous silicon ring resonator for compact, high sensitivity biosensing applications.
A ring resonator is patterned on a porous silicon slab waveguide to produce a compact, high quality factor biosensor with a large internal surface area available for enhanced recognition of… Expand
Design of Photonic Crystal Cavities for Extreme Light Concentration
The fields of photonic crystals and plasmonics have taken two different approaches to increasing light–matter interaction. Photonic crystal cavities increase temporal confinement of light in a… Expand
Slow light Mach-Zehnder interferometer as label-free biosensor with scalable sensitivity.
The design, fabrication, and characterization of a label-free Mach-Zehnder interferometer (MZI) optical biosensor that incorporates a highly dispersive one-dimensional (1D) photonic crystal in one… Expand
Enhancing the Sensitivity of Label-Free Silicon Photonic Biosensors through Increased Probe Molecule Density
We report a greater than 5-fold increase in the detection sensitivity and a greater than 3-fold reduction in the response time of planar silicon photonic biosensors by increasing the density of probe… Expand
Experimental realization of deep-subwavelength confinement in dielectric optical resonators
Dielectric cavities support record low mode volumes by incorporating subwavelength features into photonic crystal unit cells. The ability to highly localize light with strong electric field… Expand
Control of excitons in multi-layer van der Waals heterostructures
- E. Calman, C. Dorow, +4 authors Andre K. Geim
- Physics, Materials Science
- Conference on Lasers and Electro-Optics (CLEO)
- 15 October 2015
In a double quantum well van der Waals heterostructure made of atomically thin layers of MoS2 and hBN emission of neutral and charged excitons is controlled by gate voltage, temperature, and both the… Expand
Suspended micro-ring resonator for enhanced biomolecule detection sensitivity
- S. Hu, K. Qin, I. Kravchenko, S. Retterer, S. Weiss
- Engineering, Physics
- Photonics West - Biomedical Optics
- 5 March 2014
Silicon micro-ring biosensors demonstrate great potential for high sensitivity and multiplexed lab-on-chip systems. In this work, we characterize the sensing performance of suspended TM-mode silicon… Expand
Photonic crystal microring resonator based sensors
- S. M. Lo, S. Hu, S. Weiss, P. Fauchet
- Conference on Lasers and Electro-Optics (CLEO…
- 8 June 2014
Experimental studies on the chemical detection sensitivity of high surface area photonic crystal microring resonators are presented. We report a detection sensitivity of ~170nm/RIU for slow-light… Expand
Plasmonic Hot Electron Induced Photocurrent Response at MoS2-Metal Junctions.
- Tu Hong, Bhim Chamlagain, S. Hu, S. Weiss, Zhixian Zhou, Ya-Qiong Xu
- Materials Science, Medicine
- ACS nano
- 20 April 2015
We investigate the wavelength- and polarization-dependence of photocurrent signals generated at few-layer MoS2-metal junctions through spatially resolved photocurrent measurements. When incident… Expand
Photonic crystal microring resonator for label-free biosensing.
- S. M. Lo, S. Hu, G. Gaur, Y. Kostoulas, S. Weiss, P. Fauchet
- Physics, Medicine
- Optics express
- 20 March 2017
A label-free optical biosensor based on a one-dimensional photonic crystal microring resonator with enhanced light-matter interaction is demonstrated. More than a 2-fold improvement in volumetric and… Expand