Realization of optical periodic quasicrystals using holographic lithography

Abstract

We have fabricated three-dimensional periodic quasicrystals exhibiting quasiperiodicity of the Penrose structure in the x-y plane and periodic along the z axis using ten-beam visible light holographic lithography. The quasicrystals show photonic band gaps in the visible range. The band gaps are found to follow a simple relation as a function of periodicity and polymeric volume fraction, in accord with the Bragg’s diffraction relation.

Fabrication of ten-fold photonic quasicrystalline structures

“…In recent years, some scientists found that laser holographic lithography can not only be used to fabricate photonic crystals, 7-10 but also to obtain quasicrystals. [11][12][13][14][15][16] In this report, a top-cut prism interferometer is designed to fabricate ten-fold photonic quasicrystalline structures. By optimizing the exposing conditions and material characteristics, appropriate quasicrystals have been obtained in the SU8 photoresist films.…”

Fabrication of hetero-binary and honeycomb photonic crystals by one-step holographic lithography

“…Therefore, by introducing auxiliary beams, holographic lithography could become a very flexible and useful technique to obtain heterostructures or compound structures other than 14 Bravias structures. This method is also possible to be extended to fabricate 3D heterostructures by adding more beams in the vertical direction, 17 which is very difficult by other techniques such as e-beam lithography or self-assembly.…”

Pressure controlled self-assembly of high quality three-dimensional colloidal photonic crystals

“…[3][4][5][6][7] To realize these utilizations, significant efforts have been devoted to fabricate photonic crystals. [8][9][10][11][12][13][14][15][16][17][18][19] Among them, the colloidal sphere selfassembling provides a simple, cost-efficient approach to fabricate three-dimensional ͑3D͒ photonic crystals ͑PCs͒. [12][13][14][15][16][17][18][19] Vertical deposition method, developed by Jiang et al 12 is widely used to form large scale single-crystalline PCs with controllable thickness and superior quality compared to other self-assembly methods.…”

“…[12][13][14][15][16][17][18][19] Vertical deposition method, developed by Jiang et al 12 is widely used to form large scale single-crystalline PCs with controllable thickness and superior quality compared to other self-assembly methods. [8][9][10][11][12][13][14][15][16][17][18][19] Recently, some effectively improved approaches based on the vertical deposition method have been developed to break through its two limitations: sedimentation of large colloidal spheres and long evaporation time. 20 Vlasov et al added a vertical temperature gradient to enhance convective flows in sphere dispersions and successfully produced colloidal crystal films with 855 nm silica spheres.…”

“…[3][4][5][6][7] To realize these utilizations, significant efforts have been devoted to fabricate photonic crystals. [8][9][10][11][12][13][14][15][16][17][18][19] Among them, the colloidal sphere selfassembling provides a simple, cost-efficient approach to fabricate three-dimensional ͑3D͒ photonic crystals ͑PCs͒. …”