Structural tailoring of nanoporous anodic alumina optical microcavities for enhanced resonant recirculation of light

Nanoscale ◽  
2018 ◽  
Vol 10 (29) ◽  
pp. 14139-14152 ◽  
Author(s):  
Cheryl Suwen Law ◽  
Siew Yee Lim ◽  
Andrew D. Abell ◽  
Lluís F. Marsal ◽  
Abel Santos
Keyword(s):  
Photonic Crystal ◽  
Structural Engineering ◽  
Anodic Alumina ◽  
High Quality ◽  
Nanoporous Anodic Alumina ◽  
Optical Microcavities

A study about the structural engineering of high quality nanoporous anodic alumina optical microcavities (NAA-μCVs) fabricated by rationally designed anodisation strategies to enhance the light-confining capabilities of these photonic crystal (PC) structures is presented.

Light-confining semiconductor nanoporous anodic alumina optical microcavities for photocatalysis

2019 ◽  
Vol 7 (39) ◽  
pp. 22514-22529 ◽  
Author(s):  
Lina Liu ◽  
Siew Yee Lim ◽  
Cheryl Suwen Law ◽  
Bo Jin ◽  
Andrew D. Abell ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Structural Engineering ◽  
Extensive Study ◽  
Anodic Alumina ◽  
Nanoporous Anodic Alumina ◽  
Optical Microcavities ◽  
Light Confinement

An extensive study on the structural engineering of titanium dioxide-functionalized nanoporous anodic alumina optical microcavities (TiO2-NAA-μQVs) for photocatalysis enhanced by light confinement is presented.

(Invited) Recent Advances in Structural Engineering of Nanoporous Anodic Alumina and Applications

2020 ◽  
Vol MA2020-02 (10) ◽  
pp. 1194-1194
Author(s):  
Lluis F. Marsal ◽  
Laura Karen Acosta ◽  
Josep Ferré-Borrull
Keyword(s):  
Structural Engineering ◽  
Anodic Alumina ◽  
Nanoporous Anodic Alumina ◽  
Recent Advances

Structural engineering of nanoporous anodic alumina funnels with high aspect ratio

2011 ◽  
Vol 655 (1) ◽  
pp. 73-78 ◽  
Author(s):  
Abel Santos ◽  
Pilar Formentín ◽  
Josep Pallarès ◽  
Josep Ferré-Borrull ◽  
Lluís F. Marsal
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Structural Engineering ◽  
Anodic Alumina ◽  
Nanoporous Anodic Alumina

Structural Engineering of Nanoporous Anodic Alumina Photonic Crystals by Sawtooth-like Pulse Anodization

2016 ◽  
Vol 8 (21) ◽  
pp. 13542-13554 ◽  
Author(s):  
Cheryl Suwen Law ◽  
Abel Santos ◽  
Mahdieh Nemati ◽  
Dusan Losic
Keyword(s):  
Photonic Crystals ◽  
Structural Engineering ◽  
Anodic Alumina ◽  
Nanoporous Anodic Alumina

Anodizing with voltage versus optical path length modulation: a new tool for the preparation of photonic structures

2018 ◽  
Vol 6 (45) ◽  
pp. 12192-12199 ◽  
Author(s):  
Sergey E. Kushnir ◽  
Tatyana Yu. Pchelyakova ◽  
Kirill S. Napolskii
Keyword(s):  
Photonic Crystal ◽  
Path Length ◽  
Optical Path Length ◽  
Optical Path ◽  
Anodic Alumina ◽  
Direct Control ◽  
High Quality ◽  
Voltage Versus ◽  
Photonic Structures

Direct control of the optical path length of each layer inside anodic alumina produces a high quality photonic crystal.

High-quality-factor anodic alumina optical microcavities prepared by cyclic anodizing with voltage versus optical path length modulation

2020 ◽  
Vol 8 (12) ◽  
pp. 3991-3995 ◽  
Author(s):  
Sergey E. Kushnir ◽  
Tatiana Yu. Komarova ◽  
Kirill S. Napolskii
Keyword(s):  
Quality Factor ◽  
Path Length ◽  
Optical Path Length ◽  
Optical Path ◽  
Anodic Alumina ◽  
High Quality Factor ◽  
High Quality ◽  
Voltage Versus ◽  
Precise Control ◽  
Optical Microcavities

Precise control over the porous structure of anodic alumina allows one to produce high-quality-factor optical microcavities.

(Invited) Recent Advances in Structural Engineering of Nanoporous Anodic Alumina and Applications

2020 ◽  
Vol 98 (2) ◽  
pp. 3-11
Author(s):  
Lluis F. Marsal ◽  
Laura Karen Acosta ◽  
Josep Ferré-Borrull
Keyword(s):  
Structural Engineering ◽  
Anodic Alumina ◽  
Nanoporous Anodic Alumina ◽  
Recent Advances

scholarly journals Realization of high-quality optical nanoporous gradient-index filters by optimal combination of anodization conditions

Nanoscale ◽  
2020 ◽  
Vol 12 (17) ◽  
pp. 9404-9415 ◽  
Author(s):  
Cheryl Suwen Law ◽  
Siew Yee Lim ◽  
Lina Liu ◽  
Andrew D. Abell ◽  
Lluis F. Marsal ◽  
...  
Keyword(s):  
Anodic Alumina ◽  
Optimal Combination ◽  
Gradient Index ◽  
High Quality ◽  
Nanoporous Anodic Alumina

High-quality nanoporous anodic alumina gradient-index filters are realized by sinusoidal pulse anodization under optimized anodization conditions.

Calculation of Angular-Dependent Reflectance and Polarimetry Spectra of Nanoporous Anodic Alumina-Based Photonic Crystal Slabs

2009 ◽  
Vol 7 (1) ◽  
pp. 12-18 ◽  
Author(s):  
Zdeněk Král ◽  
Lukáš Vojkůvka ◽  
Enric Garcia-Caurel ◽  
Josep Ferré-Borrull ◽  
Lluis F. Marsal ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Anodic Alumina ◽  
Nanoporous Anodic Alumina ◽  
Photonic Crystal Slabs

scholarly journals Nanoporous Anodic Alumina Photonic Crystals for Optical Chemo- and Biosensing: Fundamentals, Advances, and Perspectives

Nanomaterials ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 788 ◽  
Author(s):  
Cheryl Suwen Law ◽  
Siew Yee Lim ◽  
Andrew D. Abell ◽  
Nicolas H. Voelcker ◽  
Abel Santos
Keyword(s):  
Photonic Crystals ◽  
Optical Sensors ◽  
High Sensitivity ◽  
Anodic Alumina ◽  
Nanoporous Structure ◽  
Nanoporous Anodic Alumina ◽  
Optical Microcavities ◽  
Surface Areas ◽  
Sensing Systems ◽  
Selective Immobilization

Optical sensors are a class of devices that enable the identification and/or quantification of analyte molecules across multiple fields and disciplines such as environmental protection, medical diagnosis, security, food technology, biotechnology, and animal welfare. Nanoporous photonic crystal (PC) structures provide excellent platforms to develop such systems for a plethora of applications since these engineered materials enable precise and versatile control of light–matter interactions at the nanoscale. Nanoporous PCs provide both high sensitivity to monitor in real-time molecular binding events and a nanoporous matrix for selective immobilization of molecules of interest over increased surface areas. Nanoporous anodic alumina (NAA), a nanomaterial long envisaged as a PC, is an outstanding platform material to develop optical sensing systems in combination with multiple photonic technologies. Nanoporous anodic alumina photonic crystals (NAA-PCs) provide a versatile nanoporous structure that can be engineered in a multidimensional fashion to create unique PC sensing platforms such as Fabry–Pérot interferometers, distributed Bragg reflectors, gradient-index filters, optical microcavities, and others. The effective medium of NAA-PCs undergoes changes upon interactions with analyte molecules. These changes modify the NAA-PCs’ spectral fingerprints, which can be readily quantified to develop different sensing systems. This review introduces the fundamental development of NAA-PCs, compiling the most significant advances in the use of these optical materials for chemo- and biosensing applications, with a final prospective outlook about this exciting and dynamic field.

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