SWIR sensor design considerations

A dielectric waveguide-based structure coupled to a whispering gallery mode (WGM) disc resonator is introduced as a low-cost integrable millimeter-wave (mm-wave) bio-sensor. An efficient variational analysis method is developed and applied to the WGM. Three sets of sensors, operating in different ranges of frequency from 85 to 220 GHz, are fabricated and tested. The performance of the fabricated bio-sensor is demonstrated for sensing different concentrations of glucose solution samples at D-band. Also, the sensitivity, selectivity, and repeatability of these sensors are examined.

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A VDF/TrFE copolymer on silicon pyroelectric sensor: Design considerations and experiments

Sensors and Actuators A Physical ◽

10.1016/0924-4247(95)81006-4 ◽

1995 ◽

Vol 47 (1-3) ◽

pp. 408-412 ◽

Cited By ~ 9

Author(s):

D. Setiadi ◽

P.P.L. Regien

Keyword(s):

Sensor Design ◽

Design Considerations ◽

Pyroelectric Sensor

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Morphological behavior of compatibilized ternary blends prepared by mechanical mixing

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100151830 ◽

1993 ◽

Vol 51 ◽

pp. 1200-1201

Author(s):

S.D. Smith ◽

R.J. Spontak ◽

D.H. Melik ◽

S.M. Buehler ◽

K.M. Kerr ◽

...

Keyword(s):

Interfacial Adhesion ◽

Diblock Copolymers ◽

Ternary Blends ◽

Mechanical Mixing ◽

Design Considerations ◽

Covalently Bonded ◽

Homopolymer Blends ◽

Emulsifying Agent ◽

Surface Active ◽

Low Entropy

When blended together, homopolymers A and B will normally macrophase-separate into relatively large (≫1 μm) A-rich and B-rich phases, between which exists poor interfacial adhesion, due to a low entropy of mixing. The size scale of phase separation in such a blend can be reduced, and the extent of interfacial A-B contact and entanglement enhanced, via addition of an emulsifying agent such as an AB diblock copolymer. Diblock copolymers consist of a long sequence of A monomers covalently bonded to a long sequence of B monomers. These materials are surface-active and decrease interfacial tension between immiscible phases much in the same way as do small-molecule surfactants. Previous studies have clearly demonstrated the utility of block copolymers in compatibilizing homopolymer blends and enhancing blend properties such as fracture toughness. It is now recognized that optimization of emulsified ternary blends relies upon design considerations such as sufficient block penetration into a macrophase (to avoid block slip) and prevention of a copolymer multilayer at the A-B interface (to avoid intralayer failure).

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Theoretical And Practical Design Considerations for Ultra-High Resolution Electron Lenses

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s1431927600001161 ◽

1980 ◽

Vol 38 ◽

pp. 266-269

Author(s):

Y. Harada ◽

K. Tsuno ◽

Y. Arai

Keyword(s):

Optical Properties ◽

High Resolution ◽

Chromatic Aberration ◽

Point Of View ◽

Pole Piece ◽

Axial Field ◽

Design Considerations ◽

Resolution Electron ◽

Practical Design ◽

Peak Flux

Magnetic objective lenses, from the point of view of pole piece geometry, can he roughly classified into two types, viz., symmetrical and asymmetrical. In the case of the former, the optical properties have been calculated by several authors1-3) and the results would appear to suggest that, in order to reduce the spherical and chromatic aberration coefficients, Cs and Cc, it is necessary to decrease the half-width value of the axial field distribution and to increase the peak flux density. The expressions for either minimum Cs or minimum Cc were presented in the form of ‘universal’ curves by Mulvey and Wallington4).

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