A drill bit comprising: a plurality of cutting devices, wherein each cutting device of the plurality of cutting devices comprises: a cutting layer formed to cut a rock formation, a substrate layer, and a capacitive sensor disposed adjacent the cutting layer and embedded between the cutting layer and the substrate layer, the capacitive sensor configured to generate an electric field across the cutting layer, and transmit a signal corresponding to a voltage associated with the electric field, wherein the capacitive sensor comprises an insulation layer coating a top surface of the substrate layer, electrodes (124, 126) connected to the insulation layer, spaced apart from each other along opposite sides of the cutting device and driven by an alternating current waveform to generate the electric field across the cutting layer, and electrical connections that connect to the electrodes (124, 126) and extend through the substrate layer, wherein the electrical connections are configured to deliver the signal corresponding to the voltage; and a microelectronics unit configured to receive the signal from the capacitive sensor of each cutting device of the plurality of cutting devices such that the microelectronics unit receives a plurality of signals, and determine an indicator of mechanical wear of the drill bit based on a change in the voltage associated with the electric field across the cutting layer of each cutting device of the plurality of cutting devices using the plurality of signals. a plurality of cutting devices, wherein each cutting device of the plurality of cutting devices comprises: a cutting layer formed to cut a rock formation, a substrate layer, and a capacitive sensor disposed adjacent the cutting layer and embedded between the cutting layer and the substrate layer, the capacitive sensor configured to generate an electric field across the cutting layer, and transmit a signal corresponding to a voltage associated with the electric field, wherein the capacitive sensor comprises an insulation layer coating a top surface of the substrate layer, electrodes (124, 126) connected to the insulation layer, spaced apart from each other along opposite sides of the cutting device and driven by an alternating current waveform to generate the electric field across the cutting layer, and electrical connections that connect to the electrodes (124, 126) and extend through the substrate layer, wherein the electrical connections are configured to deliver the signal corresponding to the voltage; and a cutting layer formed to cut a rock formation, a substrate layer, and a capacitive sensor disposed adjacent the cutting layer and embedded between the cutting layer and the substrate layer, the capacitive sensor configured to generate an electric field across the cutting layer, and transmit a signal corresponding to a voltage associated with the electric field, wherein the capacitive sensor comprises an insulation layer coating a top surface of the substrate layer, electrodes (124, 126) connected to the insulation layer, spaced apart from each other along opposite sides of the cutting device and driven by an alternating current waveform to generate the electric field across the cutting layer, and electrical connections that connect to the electrodes (124, 126) and extend through the substrate layer, wherein the electrical connections are configured to deliver the signal corresponding to the voltage; and generate an electric field across the cutting layer, and transmit a signal corresponding to a voltage associated with the electric field, wherein the capacitive sensor comprises an insulation layer coating a top surface of the substrate layer, electrodes (124, 126) connected to the insulation layer, spaced apart from each other along opposite sides of the cutting device and driven by an alternating current waveform to generate the electric field across the cutting layer, and electrical connections that connect to the electrodes (124, 126) and extend through the substrate layer, wherein the electrical connections are configured to deliver the signal corresponding to the voltage; and an insulation layer coating a top surface of the substrate layer, electrodes (124, 126) connected to the insulation layer, spaced apart from each other along opposite sides of the cutting device and driven by an alternating current waveform to generate the electric field across the cutting layer, and electrical connections that connect to the electrodes (124, 126) and extend through the substrate layer, wherein the electrical connections are configured to deliver the signal corresponding to the voltage; and a microelectronics unit configured to receive the signal from the capacitive sensor of each cutting device of the plurality of cutting devices such that the microelectronics unit receives a plurality of signals, and determine an indicator of mechanical wear of the drill bit based on a change in the voltage associated with the electric field across the cutting layer of each cutting device of the plurality of cutting devices using the plurality of signals. receive the signal from the capacitive sensor of each cutting device of the plurality of cutting devices such that the microelectronics unit receives a plurality of signals, and determine an indicator of mechanical wear of the drill bit based on a change in the voltage associated with the electric field across the cutting layer of each cutting device of the plurality of cutting devices using the plurality of signals.