Journal ArticleDOI
Fabrication of photonic crystals for the visible spectrum by holographic lithography
M. Campbell,David N. Sharp,M. T. Harrison,M. T. Harrison,Robert G. Denning,Andrew J. Turberfield +5 more
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TLDR
This work describes a technique—three-dimensional holographic lithography—that is well suited to the production of three-dimensional structures with sub-micrometre periodicity, and has made microperiodic polymeric structures, and used these as templates to create complementary structures with higher refractive-index contrast.Abstract:
The term 'photonics' describes a technology whereby data transmission and processing occurs largely or entirely by means of photons. Photonic crystals are microstructured materials in which the dielectric constant is periodically modulated on a length scale comparable to the desired wavelength of operation. Multiple interference between waves scattered from each unit cell of the structure may open a 'photonic bandgap'--a range of frequencies, analogous to the electronic bandgap of a semiconductor, within which no propagating electromagnetic modes exist. Numerous device principles that exploit this property have been identified. Considerable progress has now been made in constructing two-dimensional structures using conventional lithography, but the fabrication of three-dimensional photonic crystal structures for the visible spectrum remains a considerable challenge. Here we describe a technique--three-dimensional holographic lithography--that is well suited to the production of three-dimensional structures with sub-micrometre periodicity. With this technique we have made microperiodic polymeric structures, and we have used these as templates to create complementary structures with higher refractive-index contrast.read more
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Two-photon polymerization initiators for three-dimensional optical data storage and microfabrication
Brian H. Cumpoton,S. Ananthavel,Stephen Barlow,Daniel L. Dyer,Jeffrey E. Ehrilch,Lael L. Ersktne,Ahmed A. Helkal,Stephen M. Kuebler,I.-Y. Sandy Lee,D. McCord-Maughon,Jinqui Qin,H. Rockel,Mariacristina Rumi,X. L. Wu,Seth R. Marder,Joseph W. Perry +15 more
TL;DR: In this article, a class of π;-conjugated compounds that exhibit large δ (as high as 1, 250 × 10−50 cm4 s per photon) and enhanced two-photon sensitivity relative to ultraviolet initiators were developed and used to demonstrate a scheme for three-dimensional data storage which permits fluorescent and refractive read-out, and the fabrication of 3D micro-optical and micromechanical structures, including photonic-bandgap-type structures.
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Stretchable form of single crystal silicon for high performance electronics on rubber substrates
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References
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Journal ArticleDOI
Inhibited Spontaneous Emission in Solid-State Physics and Electronics
TL;DR: If a three-dimensionally periodic dielectric structure has an electromagnetic band gap which overlaps the electronic band edge, then spontaneous emission can be rigorously forbidden.
Journal ArticleDOI
Photonic crystals: putting a new twist on light
TL;DR: In this article, the authors describe the photonic bandgap as a periodicity in dielectric constant, which can create a range of 'forbidden' frequencies called a photonic Bandgap.
Journal ArticleDOI
Existence of a Photonic Gap in Periodic Dielectric Structures
TL;DR: It is determined that dielectric spheres arranged in the diamond structure do possess a full photonic band gap, and this gap exists for refractive-index contrasts as low as 2.5%.
Journal ArticleDOI
Two-photon polymerization initiators for three-dimensional optical data storage and microfabrication
Brian H. Cumpston,S. Ananthavel,Stephen Barlow,Daniel L. Dyer,J. E. Ehrlich,L. Erskine,Ahmed A. Heikal,Stephen M. Kuebler,I.-Y. Sandy Lee,D. McCord-Maughon,Jinqui Qin,Jinqui Qin,H. Rockel,Mariacristina Rumi,Xiang Li Wu,Seth R. Marder,Seth R. Marder,Joseph W. Perry,Joseph W. Perry +18 more
TL;DR: In this article, a class of π;-conjugated compounds that exhibit large δ (as high as 1, 250 × 10−50 cm4 s per photon) and enhanced two-photon sensitivity relative to ultraviolet initiators were developed and used to demonstrate a scheme for three-dimensional data storage which permits fluorescent and refractive readout, and the fabrication of threedimensional micro-optical and micromechanical structures, including photonic bandgap-type structures.
Journal Article
Two-photon polymerization initiators for three-dimensional optical data storage and microfabrication
Brian H. Cumpoton,S. Ananthavel,Stephen Barlow,Daniel L. Dyer,Jeffrey E. Ehrilch,Lael L. Ersktne,Ahmed A. Helkal,Stephen M. Kuebler,I.-Y. Sandy Lee,D. McCord-Maughon,Jinqui Qin,H. Rockel,Mariacristina Rumi,X. L. Wu,Seth R. Marder,Joseph W. Perry +15 more
TL;DR: In this article, a class of π;-conjugated compounds that exhibit large δ (as high as 1, 250 × 10−50 cm4 s per photon) and enhanced two-photon sensitivity relative to ultraviolet initiators were developed and used to demonstrate a scheme for three-dimensional data storage which permits fluorescent and refractive read-out, and the fabrication of 3D micro-optical and micromechanical structures, including photonic-bandgap-type structures.