Abstract: The disclosed sensor comprises multiple types of graphene ink. The graphene ink may be applied via individual layers, where each layer is of a different type of graphene. Additionally, the graphene ink may be applied via a layer where the graphene ink is a mixture of two or more types of graphene. In either scenario, conductive patches of graphene and low conductivity interstitial carbon material may be created in the resulting material of the sensor. The low conductivity interstitial carbon material bridges the large, conductive patches of graphene, providing a connection between them. The graphene ink includes a first type of graphene configured for conductivity and a second type of graphene configured for wear and tear resistance. The sensor can be a resonant sensor, a vapor or gas sensor, a biosensor, or a printed label sensor, among others.

Abstract: A disclosed component may include at least one split-ring resonator, which may be embedded within a material. The split ring resonator may be formed from a three-dimensional (3D) monolithic carbonaceous growth and may detect an electromagnetic ping emitted from a user device. The split ring resonator may generate an electromagnetic return signal in response to the electromagnetic ping. The electromagnetic return signal may indicate a state of the material in a position proximate to a respective split ring resonator. In some aspects, the split-ring resonator may resonate at a first frequency in response to the electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the 3D monolithic carbonaceous growth may be based on physical characteristics of the material.

Abstract: This document describes apparatus, devices, and methods for providing an isolation element for diversity antennas. The systems and techniques use supporting circuitry, such as wiring connectors, in a transmission device that uses diversity antennas to present a conductor connected to electrical ground to receive a portion of a transmission signal generated by at least one of the antennas to couple the signal to ground. In this manner, the isolation element helps to prevent signals from the diversity antennas from merging and thereby supports the diversity antennas' capability of successfully transmitting a signal when an obstacle may impede the signal transmitted by one of the antennas.

Abstract: The technology provides for an electronic device. The electronic device includes a housing, a display cover, and a modular component configured to provide a seal between the housing to the display cover. The modular component is configured to be attached to the housing. Further, the modular component includes a first surface configured to be attached to the display cover. The modular component includes a channel extending along the first surface, where the channel is configured to hold a liquid adhesive that bonds with the display cover. The modular component further includes a radial protrusion disposed on the first surface, the radial protrusion is configured to be in contact with the display cover when the display cover is attached to the housing and to prevent the liquid adhesive from moving out of the channel.

Abstract: The technology provides for an electronic device. The electronic device includes a housing, a display cover, and a modular component configured to provide a seal between the housing to the display cover. The modular component is configured to be attached to the housing. Further, the modular component includes a first surface configured to be attached to the display cover. The modular component includes a channel extending along the first surface, where the channel is configured to hold a liquid adhesive that bonds with the display cover. The modular component further includes a radial protrusion disposed on the first surface, the radial protrusion is configured to be in contact with the display cover when the display cover is attached to the housing and to prevent the liquid adhesive from moving out of the channel.

Abstract: An antenna is provided for a wearable personal computing device, such as a smartwatch. The antenna integrates with other components of the wearable device, such as a second antenna. For example, the first antenna may be a coupled loop antenna in proximity to a second antenna that may be a monopole antenna, without causing interference between the two antennas. In one example, the first antenna shares a common ground with the second antenna.

Abstract: An antenna is provided for a wearable personal computing device, such as a smartwatch. The antenna integrates with other components of the wearable device, such as a second antenna. For example, the first antenna may be a coupled loop antenna in proximity to a second antenna that may be a monopole antenna, without causing interference between the two antennas. In one example, the first antenna shares a common ground with the second antenna.

Abstract: A wireless device can include an antenna element, a printed circuit board, an antenna feed, a conductive surface, and a conductive connector. The printed circuit board can have a ground plane. The antenna feed can be connected, at a first point, to the antenna element and to the ground plane. The conductive surface can be disposed substantially parallel to the ground plane. The conductive connector can be connected, at a second point, to the ground plane and to the conductive surface. A distance between the first point and the second point can be substantially equal to one quarter of a wavelength of an electromagnetic wave to be exploited by the wireless device. At all other points, the ground plane and the conductive surface can lack a conductive connection between the ground plane and the conductive surface.

Abstract: A wireless device can include an antenna element, a printed circuit board, an antenna feed, a conductive surface, and a conductive connector. The printed circuit board can have a ground plane. The antenna feed can be connected, at a first point, to the antenna element and to the ground plane. The conductive surface can be disposed substantially parallel to the ground plane. The conductive connector can be connected, at a second point, to the ground plane and to the conductive surface. A distance between the first point and the second point can be substantially equal to one quarter of a wavelength of an electromagnetic wave to be exploited by the wireless device. At all other points, the ground plane and the conductive surface can lack a conductive connection between the ground plane and the conductive surface.