BACKGROUND Atomic clocks use the frequency of the electronic transi tion of an alkali
metal vapor as a frequency reference. Alkali metal gasses. Such as Cesium, Rubidium or …

Disclosed examples provide gas cells and a method of fabricating a gas cell, including
forming a cavity in a first substrate, forming a first conductive material on a sidewall of the …

An apparatus includes a substrate containing a cavity and a dielectric structure covering at
least a portion of the cavity. The cavity is hermetically sealed. The apparatus also may …

Described examples include a method of fabricating a gas cell, including forming a cavity in
a first substrate, providing a nonvolatile precursor material in the cavity of the first substrate …

A method for forming a sealed cavity includes bonding a non-conductive structure to a first
substrate to form a non-conductive aperture into the first substrate. On a surface of the non …

In one embodiment, a method includes etching a cavity in a first substrate (eg, a
semiconductor wafer), forming a first metal layer on a first surface of the first substrate and in …

US10544039B2 - Methods for depositing a measured amount of a species in a sealed cavity -
Google Patents US10544039B2 - Methods for depositing a measured amount of a species in …

A pressure transducer includes a cavity, dipolar molecules disposed within the cavity, and
pressure measurement circuitry. The pressure measurement circuitry is configured to …

A device includes a substrate that includes a resonant cavity. The resonant cavity includes a
plurality of dipolar molecules that have an absorption frequency. The resonant cavity …

A method includes forming a plurality of layers of an oxide and a metal on a substrate. For
example, the layers may include a metal layer sandwiched between silicon oxide layers. A …