Conference article, meeting abstract
Properties of Deterministic Aperiodic Photonic Nanostructures for Biosensors
Publication Details
Authors: | Paulsen, M.; Jahns, S.; Neustock, L.; Adam, J.; Gerken, M. |
Publication year: | 2016 |
Pages range : | TBD |
Book title: | Conference on Photonic and Electromagnetic Crystal Structures - University of York, York, United Kingdom : Duration: 17. Jul 2016 - 21. Jul 2016 : Conference number: XII |
URN / URL: |
Abstract
Periodic dielectric photonic nanostructures have been used extensively as transducers in refractive index sensors. Photonic crystal slabs exhibit sharp resonances in the transmission and reflection spectrum. Changes in resonance wavelength, intensity, or quality factor are measured to monitor changes in the analyte region on top of the structure [1]. By specific biofunctionalization of the crystal surface, specific molecule capture is achieved. We demonstrated a handheld intensity-based measurement setup that allows for imaging detection of binding events at the surface [1]. To enhance the sensitivity of such systems, the use of deterministic aperiodic nanostructures (DANS) has been suggested [2-4]. DANS are engineered ordered nanostructures without periodicity [2,3]. The additional degrees of freedom allow for a tailoring of the optical properties. Boriskina et al. calculated that quasi-localized critical modes in aperiodic nanostructures simultaneously exhibit high quality factors Q und high sensitivity S to refractive index changes [2]. We previously calculated the spectral response of different DANS [4]. Here, we present experimental results for DANS devices (Thue- Morse, Fibonacci, Rudin-Shapiro) consisting of a nanoimprinted photo mold layer providing the nanostructure and a TiO2 high index layer (fig. 1). The measured characteristics (band diagram, far field) of these devices are compared to the ones of mono- and multiperiodic nanostructures. Near-field and far-field calculations are carried out for these structures and are compared to the experimental results.[1] Jahns, S., Bräu, M., Meyer, B. O., Karrock, T., Gutekunst, S. B., Blohm, L., Selhuber-Unkel, C., Buhmann, R., Nazirizadeh, Y., Gerken, M. (2015). Handheld imaging photonic crystal biosensor for multiplexed, label-free protein detection. Biomedical Optics Express, 6(10), 3724-3736.[2] Boriskina, S. V., Dal Negro, L. (2008). Sensitive label-free biosensing using critical modes in aperiodic photonic structures. Optics Express, 16(17), 12511-12522.[3] Dal Negro, L., Boriskina, S. V. (2012). Deterministic aperiodic anostructures for photonics and plasmonics applications. Laser and Photonics Reviews, 6(2), 178-218.[4] Neustock, L. T., Jahns, S., Adam, J., Gerken, M. (2016). Optical waveguides with compound multiperiodic grating nanostructures for refractive index sensing. Journal of Sensors, 501, 6174527.
Periodic dielectric photonic nanostructures have been used extensively as transducers in refractive index sensors. Photonic crystal slabs exhibit sharp resonances in the transmission and reflection spectrum. Changes in resonance wavelength, intensity, or quality factor are measured to monitor changes in the analyte region on top of the structure [1]. By specific biofunctionalization of the crystal surface, specific molecule capture is achieved. We demonstrated a handheld intensity-based measurement setup that allows for imaging detection of binding events at the surface [1]. To enhance the sensitivity of such systems, the use of deterministic aperiodic nanostructures (DANS) has been suggested [2-4]. DANS are engineered ordered nanostructures without periodicity [2,3]. The additional degrees of freedom allow for a tailoring of the optical properties. Boriskina et al. calculated that quasi-localized critical modes in aperiodic nanostructures simultaneously exhibit high quality factors Q und high sensitivity S to refractive index changes [2]. We previously calculated the spectral response of different DANS [4]. Here, we present experimental results for DANS devices (Thue- Morse, Fibonacci, Rudin-Shapiro) consisting of a nanoimprinted photo mold layer providing the nanostructure and a TiO2 high index layer (fig. 1). The measured characteristics (band diagram, far field) of these devices are compared to the ones of mono- and multiperiodic nanostructures. Near-field and far-field calculations are carried out for these structures and are compared to the experimental results.[1] Jahns, S., Bräu, M., Meyer, B. O., Karrock, T., Gutekunst, S. B., Blohm, L., Selhuber-Unkel, C., Buhmann, R., Nazirizadeh, Y., Gerken, M. (2015). Handheld imaging photonic crystal biosensor for multiplexed, label-free protein detection. Biomedical Optics Express, 6(10), 3724-3736.[2] Boriskina, S. V., Dal Negro, L. (2008). Sensitive label-free biosensing using critical modes in aperiodic photonic structures. Optics Express, 16(17), 12511-12522.[3] Dal Negro, L., Boriskina, S. V. (2012). Deterministic aperiodic anostructures for photonics and plasmonics applications. Laser and Photonics Reviews, 6(2), 178-218.[4] Neustock, L. T., Jahns, S., Adam, J., Gerken, M. (2016). Optical waveguides with compound multiperiodic grating nanostructures for refractive index sensing. Journal of Sensors, 501, 6174527.
