Student Seminar

Photonic crystals - 3D printing for nanoscale coloring

Friday, 24 January 2020 01:00PM PST
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Student Seminar

Aleksei Bunevich
Department of Physics, SFU

Photonic crystals - 3D printing for nanoscale coloring

Jan 24, 2020 at 1:00pm in C9000

Synopsis

Controlling optical properties of materials is a new frontier that opened up in the last few decades. Already, laser engineering, fiber-optic cables, spectroscopy, revolutionised modern industry. However, nature already had the complete control over the light propagation in the form of photonic crystals. There are many notable examples of natural organisms employing photonic crystals to produce colorful patterns.  One of the recent scientific works demonstrates the ability to produce structural color within complex 3D objects at will. In this particular research, method of printing arbitrary colors in three dimensions at the microscopic length scale was introduced. 3D-printed polymer photonic crystals were heat-shrinked to achieve sub-100-nm features with a full range of colors. The technology promises the direct patterning and integration of spectrally selective devices.