Optofluidics
 | Lab-in-a-tubeA lab-in-a-tube device comprises numerous ultracompact components in a single tube which can be developed using rolled-up technology. A single device, being one of thousands in the on-chip system, would be independently capable of stimulating, monitoring and investigating individual organisms. | |
Tubular optofluidic sensors for enhanced refractive index sensingOptofluidic microcavities from rolled-up ring resonators with subwavelength wall thicknesses have been fabricated with excellent sensing function. The positions of resonant modes shift significantly when light emission was measured in different surrounding liquids, and thus the sensitivity can be calculated based on experimental observation. A maximum sensitivity of 425 nm/refractive index unit is currently achieved, which is caused by the pronounced propagation of the evanescent field in the surrounding media due to the subwavelength wall thickness design of the sensor. Our optofluidic sensors show high potential for lab-on-a-chip applications, e.g. real-time bio-analytic systems.G. S. Huang et al., ACS Nano 4, 3123 (2010) URL PDF | ||
Glucose detection on the femtoliter scaleWe use Si/SiO microtubes as optofluidic components to sense glucose concentrations in water. The Si/SiO microtubes are fully integrative on a single chip and allow analysis of fluid volumes in the range of femtoliters. Our technology allows monolithic integration of high speed Si nanoelectronics with lab-on-chip technologies.A. Bernardi et al., Applied Physics Letters 93, 094106 (2008) URL PDF | ||