Abstract: Embodiments of the present disclosure include metabeams with nonreciprocal dispersion. A host beam has a length along along a longitudinal axis and is configured to vibrate (oscillate) over its length. The vibration may be in a first direction perpendicular to the length of the host beam. A plurality of first resonators may be arranged in an array along the length of the host beam and extending from the host beam in a second direction which forms an angle (>0°) with respect to the first direction and an angle (>0°) with respect to the longitudinal axis of the host beam. Each first resonator has an arm having a first end attached to the host beam and an arm axis. The arm has a stiffness in the first direction which is selectively variable. A mass may be attached to the arm at a location which is spaced from the first end by a first distance. The stiffness of each first resonator arm is configured to be varied to impart nonreciprocal dispersion in the host beam.

Abstract: A solar jar lid having a solar unit and having a support housing that supports the solar unit, and wherein the solar unit has a light emitting diode. The support housing has an internal thread such that it can be threaded to ajar and defines an opening for receiving a straw. The support housing is capable of being threaded to a jar. When the light emitting diode is turned on a beverage in the jar is illuminated. In another embodiment the support housing is replaced with a tabbed support housing, and in another embodiment the support housing is replaced with a clamp arm support housing. The solar unit includes a solar panel and rechargeable battery and may include an on and off switch. The user fills the jar with a beverage and the light emitting diode illuminates the beverage as the user drinks the beverage through the straw.

Abstract: A solar jar lid having a solar unit and having a support housing that supports the solar unit, and wherein the solar unit has a light emitting diode. The support housing has an internal thread such that it can be threaded to ajar and defines an opening for receiving a straw. The support housing is capable of being threaded to a jar. When the light emitting diode is turned on a beverage in the jar is illuminated. In another embodiment the support housing is replaced with a tabbed support housing, and in another embodiment the support housing is replaced with a clamp arm support housing. The solar unit includes a solar panel and rechargeable battery and may include an on and off switch. The user fills the jar with a beverage and the light emitting diode illuminates the beverage as the user drinks the beverage through the straw.