3D Optical Systems group: research summary switchable resonance - PowerPoint PPT Presentation

3D Optical Systems group: research summary switchable resonance tunable tomography resonance profilometry Integrated optics ( ≈ 2D) 3D optics 3D nanomanufacturing 3D via 2D + folding: nanostructured origami George Barbastathis Mechanical Engineering Department

3D optics for imaging Working distance Working distance Imaging properties: Imaging properties: • no or minimal scanning • 1km 1km • white light (passive) illumination • hyperspectral imaging GOAL … … Plankton (individual) 1m 1m 10cm GOAL 10cm Microscopy 1cm 1cm 1mm 1mm 100m 1cm 100μ μm m 1μ μm m 10nm 100m 1cm 100 1 10nm 1m 1m Object size Object size George Barbastathis Mechanical Engineering Department

Integrated optics with micromechanical switching/tuning diffraction gratings with continuously tunable period ~2002-2003 (1) (1) (2) (2) diffraction grating separates colors into a rainbow electrostatic comb drive / piezoelectric thin film parallel plate actuation actuation ~2003-2004 (4) (4) switchable resonance tunable (3) (3) resonance Fabry-Perot cavity transmits one ring resonator with color (resonant), reflects the rest cavity with photonic high-index contrast emphasis on integrated optics crystal reflectors waveguides Collaborators: Sang-Gook Kim (1, 2, 4), Hermann Haus and Harry Tuller (3) George Barbastathis Mechanical Engineering Department

Nanostructured Origami TM 3D fabrication and assembly method 1. Folding Design and simulation software tool Folding Folded Aligned using screw calculus for kinematics; Pattern optical Membranes are Novel hinge pins ensure future: wrench calculus for dynamics, elements folded on the wafer < 2 um alignment charge models for unfolding 3 8 µm 10 min 20 min 39.0nm 109.9nm Controlling curvature through stress Fabrication processes: Patterning: and etch timing SU-8, silicon Optical, e-beam litho Collaborators: Hank Smith, Erik Demaine, MIT George Barbastathis Mechanical Engineering Department