Special Issue "Optical Resonant Microsensors"
Deadline for manuscript submissions: closed (31 March 2011).
Interests: biosensing; nanophotonics; optofluidics; nanoplasmonics; quantum/classical information processing; nanolithography
Special Issues and Collections in MDPI journals
Optical resonant sensors utilizing optical feedback in a resonator or resonant wave-coupling to achieve “longer” interaction length for enhanced sensitivity have been developed for many years. The feedback mechanism in such resonant geometries as microcavity in a photonic crystal lattice, microring, microsphere, microtoroid and microdisk have been employed for shaping resonant transmission or reflection spectrum with the objective to enhance its spectral resolution. A complementary approach uses surface plasmon-polariton resonance (SPR) phenomena for sensing applications. In SPR sensor, an evanescently coupled optical field resonantly excites a surface plasmon-polariton wave which is employed to monitor the metal-dielectric interface by monitoring the resonantly transmitted or reflected light which provide comparable sensor sensitivity. Recent advance in micro/nano fabrication technology allows for miniaturization and cost-effective manufacturing of such optical resonant sensor devices with retained sensing sensitivity. Moreover, chip-scale integration of microfluidics with optics will enable analyte preparation and delivery for optical interrogation by photonic integrated circuit that include light source, light guiding, manipulation, optical resonant sensor and detection elements. Ideal biosensor not only will maximize the optical localization (i.e., localize the electromagnetic energy in a small mode volume) but also enforce maximal overlap between this localized field and the volume of biomolecular interactions. Furthermore, because of its smaller footprint dimensions, large array of sensors can be made on the single sensor chip allowing to perform high throughput monitoring and detection to realize multiple sensing modalities and improve detection accuracy and specificity. Various potential applications such as label-free immunoassays, chemical sensors, and precision temperature and pressure measurements will benefit from the developments of resonant microsensor. , as well as analyte or sample delivery subsystem, plus traditional chip capability of the data acquisition, processing and analysis have enable such optical optical resonant microsensors.
Prof. Dr. Yeshaiahu (Shaya) Fainman
- optical resonator
- plasmon resonance
- resonant cavity
- surface plasmon resonance
- nanoplasmonic sensor
- whispering-gallery mode
- high Q-factor resonant microsensor
- photonic crystal resonator
- waveguide resonator
- microtoroidal structure
- microsensor chip
- protein chips