Facilities

The Boechler Research Group has 1100 ft2 of lab space located in the Mechanical Engineering and Aerospace Research Buildings. Major equipment and capabilities include:

Major Equipment

MEB_1535

• Variable rep rate (single shot to 50 kHz), 60 uJ, 430 ps, 532 nm, Nd:YAG pulsed laser (Coherent Helios 3W)
• Coherent Genesis, 1W 514 nm Nd:YAG CW laser
• Tektronix DPO7254C 2.5 GHz (40 GS/s) and DPO2014 1 GHz high speed digital oscilloscopes
• Two Newport RS4000 Optical (5’x10’ and 5’x12′) high performance air tables with laminar flow legs
• Nikon 80i microscope with 100x objective lenses and CCD video capabilities
• Fume hoods
• Branson Ultrasonicator
• Tektronix AFG3022B Signal Generator
• EMD Millipure Ultrapure water system
• H300RTH Environmental control chamber
• KW4A Spin Coater
• Tierry Zepto Oxygen Plasma System
• DLP projection 3D printing system
• Miniature accelerated impactor drop tower (up to ~13 m/s striker velocity)
• Nanoscribe 3D printer (150 nm in-plane resolution)

Shared Access

• Coherent Verdi V8 pumped Mira900 femtosecond laser
• Access to Washington Nanotech Facility (WNF) and NanoTech
User Facility (NTUF)
• Instron Dynatup 9250HV Mechanical Tester (UW ME)
• IInstron 5585H 250 kN Electro-Mechanical Test Frame (UW ME)
• High speed video

Self-assembly fabrication

We utilize self-assembly techniques for the fabrication of large area materials with micro- to nanoscale structural features. As shown in the case of metamaterials and phononic crystals, materials with designed micro- and nanostructures can present new functionalities and highly desirable properties. However, in many cases, applications require that these materials be used in large quantities and areas. This often becomes impractical using conventional and point-by-point (top-down) manufacturing techniques. An alternate approach is to let the materials build themselves, or self-assemble in a bottom-up approach. We utilize a hybrid approach, combining self-assembly techniques with top-down micro- and nanofabrication techniques to enable our novel materials.

Laser ultrasonic characterization

TGImage_2

Photoacoustic techniques use lasers to generate and measure mechanical waves at very high frequencies (hundreds of MHz and above) and resolution (sub-angstrom). We are currently constructing photoacoustic experimental setups to study high frequency acoustic wave propagation in micro- to nanoscale granuar materials and acoustic metamaterials.

Our current setups include:
• Laser-induced transient grating spectroscopy
• Scanned photo-deflection surface acoustic wave characterization
• Grating interferometry