CBA Student Presentations

Josh LiftonHong MaResponsive Environments Group

Hong Ma

RESPONSIVE ENVIRONMENTS

3D Volumetric Sensing Using Resonant RF Tags

Detect passive resonant tags inductively coupled to coilLocate and uniquely identify an ensemble of tags to describe meaningful 3D shapesDo this in real-time to allow an interaction between the physical model and virtual model

Nanogate Molecular Instrumentin Collaboration with James White and Prof. Slocum’s group

The Nanogate is a MEMS device that is designed to open and close a nanometer sized gap.

Control gate opening by deflecting the cantilevered plate on the outside of the silicon disc.

We hope to control the gate opening and use it to filter and sort biomolecules such as proteins and DNA.

RESPONSIVE ENVIRONMENTS

Nanogate Molecular Instrument

Experimental Issues

• Thermal Drift• Vibration• Displacement

measurement (alignment)

• Repeatability

RESPONSIVE ENVIRONMENTS

Results: 10 stepsDisplacement from 10 steps

110

120

130

140

150

160

170

180

190

0 0.02 0.04 0.06 0.08 0.1 0.12

time (s)

dis

pla

cem

en

t (n

m)

RESPONSIVE ENVIRONMENTS

Results: 1 Step, 2nm Resolution!Displacement due to 1 step

75

77

79

81

83

85

87

89

91

0 0.02 0.04 0.06 0.08 0.1 0.12

time (s)

dis

pla

ce

me

nt

(nm

)

raw data

averaged

RESPONSIVE ENVIRONMENTS