1) Non-oxide glasses have high refractive index values due to their metal-oxygen
ID: 3161431 • Letter: 1
Question
1) Non-oxide glasses have high refractive index values due to their metal-oxygen bonds _____________
2) A reduction in glass network coordination number <r> (i.e., As4Se6 --> As2Se8) increases the viscosity at a fixed temperature __________
3) Sensor sensitivity of chalcogenide waveguide evanescent sensors is defined by the device's absorption loss and length ________
4) Sensor specificity and a sensor devices' resonant wavelength is dictated by resonator size and refractive index ________________
5) GRIN materials always exhibit gradients in their optical and mechanical properties _______________
1) Non-oxide glasses have high refractive index values due to their metal- oxygen bonds 2) A reduction in glass network coordination number r (i.e., As4Se6 As2Se8) increases the viscosity at a fixed temperature 3) Sensor sensitivity of chalcogenide waveguide evanescent sensors is defined by the device's absorption loss and length 4) Sensor specificity and a sensor devices' resonant wavelength is dictated by resonator size and refractive index 5) GRIN materials always exhibit gradients in their optical and mechanical propertiesExplanation / Answer
1) Non-oxide glasses have high refractive index values due to their metal-oxygen bonds __False__ as if it non oxide than there is no metal oxide bond in it.
2) A reduction in glass network coordination number <r> (i.e., As4Se6 --> As2Se8) increases the viscosity at a fixed temperature _False as reduction in coordination number decreases density and bond length increases so viscosity decreases.
3) Sensor sensitivity of chalcogenide waveguide evanescent sensors is defined by the device's absorption loss and length _True as The sensing mechanism of chalcogenide glass optical chemical sensors are based on optical absorption spectroscopy, where the device detects the absorption of target molecules.
4) Sensor specificity and a sensor devices' resonant wavelength is dictated by resonator size and refractive index _____True as The trade-off between detection sensitivity/accuracy and device footprint can be overcome by using a resonant cavity (optical resonator), which offers resonantly-enhanced, long optical path length while still maintaining a small physical device size.
5) GRIN materials always exhibit gradients in their optical and mechanical properties _True as the namr suggest gradient index materials
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