BioHarvesting: Use of Natural Forms
This presentation is the property of its rightful owner.
Sponsored Links
1 / 12

BioHarvesting: Use of Natural Forms For Photonics PowerPoint PPT Presentation


  • 99 Views
  • Uploaded on
  • Presentation posted in: General

BioHarvesting: Use of Natural Forms For Photonics. Richard A. Vaia Air Force Research Laboratory, Materials & Manufacturing Directorate. Funding: Bio-Inspired Concept Theme, Air Force Office of Scientific Research (AFOSR) Asian Office of Aerospace Research & Development (AOARD)

Download Presentation

BioHarvesting: Use of Natural Forms For Photonics

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Bioharvesting use of natural forms for photonics

BioHarvesting: Use of Natural Forms

For Photonics

Richard A. Vaia

Air Force Research Laboratory,

Materials & Manufacturing Directorate

Funding:

Bio-Inspired Concept Theme, Air Force Office of Scientific Research (AFOSR)

Asian Office of Aerospace Research & Development (AOARD)

Air Force Research Lab/Materials & Manufacturing Dir. (AFRL/ML)

Collaborative Center for Polymer Photonics (CCPP)


Bioharvesting use of natural forms for photonics

BioHarvesting Natural Forms

Team

Prof. Sergei LyuksyutovUniv. Akron

Prof. Liming DiaUniv. Akron

Prof. Edwin ThomasMIT

Sam Ha MIT

Edwin Chan MIT/U. Mass

Prof. Paul Matsudaira Whitehead Institute

Jennifer Shin Whitehead Institute

Dr. Andrew SmithNatural History Museum, London, UK

Dr. Terje DoklandInst. Molecular and Cell Biology, Singapore

Prof. Vernon WardUniv. Otago

Jason Brunton Univ. Otago

Shane JuhlAFRL/ML

Ryan KramerAFRL/ML

Dr. Corey RadloffAFRL/ML

Dr. Morley StoneAFRL/ML

Dr. Rajesh NaikAFRL/ML

Dr. Joe Constantino AFRL/ML

Dr. Barry Farmer AFRL/ML

John Murry AFRL/ML


Bioharvesting use of natural forms for photonics

BioHarvesting Natural Forms

For Photonics

Introduction: Photonic Band Gap Materials

Bio-Templating

Scaffolds and Top-Down Replication

Bio-Colloids

Self, Forced & Directed Assembly

Summary


Bioharvesting use of natural forms for photonics

0.3a, e =12.96

0.7a, e=1

Periodic Potential:

efluct(r)

a

Periodic function:

E(r)

e(x) = e0efluct(x)

S. John, Univ. Toronto

Andrew Reynolds, Univ. Glasgow

Photonic Band Gap Materials(PBGs)

Periodicity (L)

+

Dielectric Contrast (e)

+

Geometry

=

forbidden frequency for wave propagation

(photonic band gap)


Bioharvesting use of natural forms for photonics

k

2r

k

morphology

continuum

ls

<ls>

Periodic

Random

Photonic Band Gap Materials(PBGs)

Periodicity (L)

+

Dielectric Contrast (e)

+

Geometry

=

forbidden frequency for wave propagation

(photonic band gap)


Bioharvesting use of natural forms for photonics

Challenge:Approaches for ‘Large Area’ PBG Fabrication

  • Methods to form ordered, anisotropic structures

    • Microcontact printing

    • Block copolymer templating

    • Colloidal crystal processing

    • Lithography (nano)

    • Holography

    • TPA MicroFab

    • Surfactant(micelle) directed

    • Pattern-directed dewetting

    • Polyelectrolyte deposition

    • ….

  • Trade-offs

  • Cost-effect, rapid access to ‘complex’ structures

  • ‘Defect’ engineering

Role for

Natural Forms?

Bio-chemical Approaches?

3d silicon arrays

Lin et. al., MRS

Woodpile

E. Ozbay; S. Noda;

S. Lin

Selenium, inverse FCC

Braun, et. al, Adv. Mat

Microcircuitry

Joannopoulis


Bioharvesting use of natural forms for photonics

Interference / Iridescence

  • 1D:Morpho Butterfly, Abalone Shells, Humming Bird

  • 2D:Sea Mouse

  • 3D:Opals

Structural Color in Nature

Scattering

Rayleigh


Bioharvesting use of natural forms for photonics

Top-Down: Replication

Bottom-Up: Assembly

100 nm

scale bar = 15 nm

Scheuring, S.; et al. Mol. Microbiol.

2002, 44(3), 675-684.

Sara, M.; et al

J. Bacteriol. 2000, 182(4), 859.

Structure and Form in Nature

Chem. Mater. 9: 1731-1740, 1997

Proc. Natl. Acad. Sci. 95: 6234-6238, 1998


Bioharvesting use of natural forms for photonics

BioHarvesting Natural Forms

For Photonics

Introduction: Photonic Band Gap Materials

Bio-Templating

Scaffolds and Top-Down Replication

Bio-Colloids

Self, Forced & Directed Assembly

Summary


Bioharvesting use of natural forms for photonics

Mathematician’s Cidaris Cidaris

Skeletal graph of the P-surface

Gap Map

Schwartz’s P-Surface

“Plumber’s Nightmare”

2-3

Gap Closes

3.75:1

5-6

Gap Closes

3:1

Image from http://www.msri.org/publications/sgp/jim/geom/level/skeletal/index.html

Level Set Equation

10(cosx + cosy + cosz) – 5(cosx cosy + cosy cosz + cosz cosx) = t

Ha, et al.


Various stereom morphologies

Various Stereom Morphologies

Smith, A.B. “The stereom microstructure of the echinoid test.” Special Papers in Palaeontology, 25, p.1 (1981).

Andrew B. Smith

Department of Paleontology,

Natural History Museum

Ha, et al.


Bioharvesting use of natural forms for photonics

Size Reduction & Infiltration Scheme

Inverse SiO2 Structure

Native Structure

Ha, et al.


  • Login