The present invention relates to a method for evaluating the thermal expansion properties of a titania-containing glass body. On the basis of measured values, obtained at a certain temperature, for a physical parameter that changes depending on the titania concentration and a physical parameter that changes depending on the fictive temperature, the thermal expansion coefficient of the titania-containing silica glass body and the slope of the thermal expansion coefficient are calculated using a linear relational expression represented by a plurality of physical properties. The thermal expansion properties of the titania-containing silica glass body are evaluated on the basis of the calculated thermal expansion coefficient and thermal expansion coefficient slope.

The present invention relates to a method for evaluating the thermal expansion properties of a titania-containing glass body. On the basis of measured values, obtained at a certain temperature, for a physical parameter that changes depending on the titania concentration and a physical parameter that changes depending on the fictive temperature, the thermal expansion coefficient of the titania-containing silica glass body and the slope of the thermal expansion coefficient are calculated using a linear relational expression represented by a plurality of physical properties. The thermal expansion properties of the titania-containing silica glass body are evaluated on the basis of the calculated thermal expansion coefficient and thermal expansion coefficient slope.

A nanoscale temperature sensor is presented that is based on mechano-optical sensing. The temperature sensor features a nanoscale bilayer sensing member with a footprint of <100 nm. The sensing member is composed of two layers of materials with similar elastic modulus but different coefficients of thermal expansion. This difference in coefficients of thermal expansion causes the sensing member to mechanically deform upon temperature change. The deformation of the sensing member alters its optical properties, allowing the temperature measurement to be achieved by far field imaging with high throughput. Both the mechanical and optical properties of the sensing member are reversible thus allow stable and repeatable measurement.

The present invention relates to a method for evaluating the thermal expansion properties of a titania-containing glass body. On the basis of measured values, obtained at a certain temperature, for a physical parameter that changes depending on the titania concentration and a physical parameter that changes depending on the fictive temperature, the thermal expansion coefficient of the titania-containing silica glass body and the slope of the thermal expansion coefficient are calculated using a linear relational expression represented by a plurality of physical properties. The thermal expansion properties of the titania-containing silica glass body are evaluated on the basis of the calculated thermal expansion coefficient and thermal expansion coefficient slope.

The present invention relates to a method for evaluating the thermal expansion properties of a titania-containing glass body. On the basis of measured values, obtained at a certain temperature, for a physical parameter that changes depending on the titania concentration and a physical parameter that changes depending on the fictive temperature, the thermal expansion coefficient of the titania-containing silica glass body and the slope of the thermal expansion coefficient are calculated using a linear relational expression represented by a plurality of physical properties. The thermal expansion properties of the titania-containing silica glass body are evaluated on the basis of the calculated thermal expansion coefficient and thermal expansion coefficient slope.

A structural health monitoring sensor includes a first layer of micromachined planar foil welded to a target structure, the first layer having a cavity and groove formed therein, the groove extending from the first cavity to the exterior of the target structure. The sensor also having second layer of micromachined planar foil welded to the first layer, the second layer having a second cavity corresponding to the first cavity. The sensor also includes dielectric ceramic coating formed within the cavities and grooves to form a film resonator and film waveguide within the target structure. The resulting waveguide forming an opening on the exterior surface of the target structure. The sensor also includes an adapter attached to the exterior surface of the target structure at the waveguide opening and may be wireless.

A structural health monitoring sensor includes a first layer of micromachined planar foil welded to a target structure, the first layer having a cavity and groove formed therein, the groove extending from the first cavity to the exterior of the target structure. The sensor also having second layer of micromachined planar foil welded to the first layer, the second layer having a second cavity corresponding to the first cavity. The sensor also includes dielectric ceramic coating formed within the cavities and grooves to form a film resonator and film waveguide within the target structure. The resulting waveguide forming an opening on the exterior surface of the target structure. The sensor also includes an adapter attached to the exterior surface of the target structure at the waveguide opening and may be wireless.