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Title: Resonant Mode Engineering of Photonic Crystal Sensors Clad with Ultralow Refractive Index Porous Silicon Dioxide

Journal Article · · Advanced Optical Materials
ORCiD logo [1];  [2];  [2];  [3];  [2];  [4]
  1. Univ. of Illinois at Urbana-Champaign, IL (United States). Dept. of Electrical and Computer Engineering; Beihang Univ., Beijing (China). School of Electronic and Information Engineering
  2. Univ. of Illinois at Urbana-Champaign, IL (United States). Dept. of Materials Science and Engineering
  3. Univ. of Illinois at Urbana-Champaign, IL (United States). Dept. of Electrical and Computer Engineering, Micro and Nanotechnology Lab.
  4. Univ. of Illinois at Urbana-Champaign, IL (United States). Dept. of Electrical and Computer Engineering, Micro and Nanotechnology Lab., and Dept. of Bioengineering

Abstract Porous SiO 2 (PSiO 2 ) with ultralow refractive index ( n = 1.09) is incorporated as the cladding of a photonic crystal (PC) refractive index sensor with enhanced sensitivity through the establishment of resonant modes that principally reside in the liquid medium covering the PC surface. PSiO 2 , obtained by thermal oxidation of porous Si that has been transferred to a transparent substrate, is transparent at visible and near infrared wavelengths with a refractive index determined by its porosity. The PSiO 2 periodic grating structure (Λ = 590 nm) is patterned by nanoimprint lithography and reactive ion etching, then conformally coated by sputtering high refractive index TiO 2 to seal the pores from liquid infiltration. With the refractive index of PSiO 2 much lower than that of water, the resonant mode “flips” its spatial distribution from within the solid dielectric regions of the photonic crystal to reside mainly in the water media covering the PC, resulting in 4× greater resonant wavelength shift for a fixed refractive index change. This study demonstrates design, fabrication, and testing of the sensor as a refractometer, supported by electromagnetic simulations of the resonant mode spatial distribution, in which porous PC sensors are compared to nonporous PC sensors.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Light-Material Interactions in Energy Conversion (LMI)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001293; DE‐SC0001293
OSTI ID:
1470416
Alternate ID(s):
OSTI ID: 1378114
Journal Information:
Advanced Optical Materials, Vol. 5, Issue 21; Related Information: LMI partners with California Institute of Technology (lead); Harvard University; University of Illinois, Urbana-Champaign; Lawrence Berkeley National Laboratory; ISSN 2195-1071
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

References (42)

Dielectric filters made of PS: advanced performance by oxidation and new layer structures journal April 1997
Label-Free Biosensor Imaging on Photonic Crystal Surfaces journal August 2015
Photonic crystals with SiO2–Ag “post-cap” nanostructure coatings for surface enhanced Raman spectroscopy journal October 2008
A Porous Silicon-Based Optical Interferometric Biosensor journal October 1997
Structural Colors from Fano Resonances journal January 2015
Distance dependence of fluorescence enhancement from photonic crystal surfaces journal April 2008
Nanostructured Surfaces and Detection Instrumentation for Photonic Crystal Enhanced Fluorescence journal April 2013
Optical properties of porous silicon superlattices journal May 1994
Tunable structural colour journal October 2009
Transfer-Printing of Tunable Porous Silicon Microcavities with Embedded Emitters journal October 2014
Thermal oxidation of free-standing porous silicon films journal February 1997
Detachment Lithography of Photosensitive Polymers: A Route to Fabricating Three-Dimensional Structures journal January 2010
Nanoscale porous silicon waveguide for label-free DNA sensing journal May 2008
Porous Silicon Microcavities for Biosensing Applications journal November 2000
Porous silicon formation mechanisms journal April 1992
Polarized quantum dot emission in electrohydrodynamic jet printed photonic crystals journal August 2015
Label-free porous silicon membrane waveguide for DNA sensing journal October 2008
Porous silicon: a versatile optical material conference March 2004
External cavity laser biosensor journal January 2013
Effective dielectric function of mixtures of three or more materials: a numerical procedure for computations journal May 2000
Porous silicon superlattices journal December 1994
Porous silicon microcavities as optical chemical sensors journal May 2000
Polymeric waveguides using oxidized porous silicon cladding for optical amplification journal August 2009
Sensitivity of the optical properties of porous silicon layers to the refractive index of liquid in the pores journal May 2003
Large-area organic distributed feedback laser fabricated by nanoreplica molding and horizontal dipping journal January 2010
Sculpting narrowband Fano resonances inherent in the large-area mid-infrared photonic crystal microresonators for spectroscopic imaging journal January 2014
Guided mode biosensor based on grating coupled porous silicon waveguide journal January 2011
Effective refractive index and composition of oxidized porous silicon films journal January 2000
Porous Silicon Gradient Refractive Index Micro-Optics journal November 2016
Photonic crystal enhanced microscopy for imaging of live cell adhesion journal January 2013
Planar pore-filling ? adsorption in porous silicon journal January 1997
Morphology and Formation Mechanisms of Porous Silicon journal January 2004
Physics of structural colors journal June 2008
A simple method for the determination of the optical constants n, k and the thickness of a weakly absorbing thin film journal November 1976
Grating couplers on porous silicon planar waveguides for sensing applications journal December 2008
Nanostructured Optical Photonic Crystal Biosensor for HIV Viral Load Measurement journal February 2014
Tunable Visibly Transparent Optics Derived from Porous Silicon journal March 2017
Photonic Crystal Sensors Based on Porous Silicon journal April 2013
Detection of Protein–Small Molecule Binding Using a Self-Referencing External Cavity Laser Biosensor journal April 2014
A Carpet Cloak for Visible Light journal July 2011
Optical devices from porous silicon having continuously varying refractive index journal March 2007
Structural Colors from Fano Resonances text January 2014

Cited By (7)

Design for Distributed Feedback Laser Biosensors Based on the Active Grating Model journal June 2019
Single-mode porous silicon waveguide interferometers with unity confinement factors for ultra-sensitive surface adlayer sensing journal January 2019
High-sensitivity quasi-periodic photonic crystal biosensor based on multiple defective modes journal January 2019
Symmetric guided-mode resonance sensors in aqueous media with ultrahigh figure of merit journal January 2019
Meridian whispering gallery modes sensing in a sessile microdroplet on micro/nanostructured superhydrophobic chip surfaces journal August 2019
Guided Mode Resonance Sensors with Optimized Figure of Merit journal June 2019
Room-Temperature Low-Threshold Lasing from Monolithically Integrated Nanostructured Porous Silicon Hybrid Microcavities journal May 2018