Abstract: An exemplary embodiment of the present disclosure provides a micro-robot comprising a body, a helical ridge disposed on an exterior surface of the body, and at least one end effector coupled to the body. At least a portion of the micro-robot can comprise a magnetic material. The micro-robot can be configured to be inserted into a patient's body. The micro-robot can be further configured to be manipulated via a magnetic stimulus external to the patient's body.

Abstract: The present disclosure describes systems and methods for novel phononic frequency combs and related sensing techniques realized by a piezoelectric multimode or single-mode mechanical resonator based on parametric pumping. In one embodiment of such a system, a single frequency electrical input provides an electrical signal comprising an amplitude and a single input frequency to a single-mode mechanical resonator, in which a value of the single input frequency equals twice a value of the resonance mode of the single-mode mechanical resonator. Accordingly, the mechanical resonator is configured to produce at least one phononic frequency comb in response to a motion of the mechanical resonator caused by the electrical signal.

Abstract: The present disclosure describes systems and methods for novel phononic frequency combs and related sensing techniques realized by a piezoelectric multimode or single-mode mechanical resonator based on parametric pumping. In one embodiment of such a system, a single frequency electrical input provides an electrical signal comprising an amplitude and a single input frequency to a multimode mechanical resonator, in which a value of the single input frequency equals a sum of the resonance frequencies of the two resonance modes of the mechanical resonator. Accordingly, the mechanical resonator is configured to produce at least one phononic frequency comb in response to a motion of the mechanical resonator caused by the electrical signal.

Abstract: The present disclosure describes systems and methods for novel phononic frequency combs and related sensing techniques realized by a piezoelectric multimode or single-mode mechanical resonator based on parametric pumping. In one embodiment of such a system, a single frequency electrical input provides an electrical signal comprising an amplitude and a single input frequency to a multimode mechanical resonator, in which a value of the single input frequency equals a sum of the resonance frequencies of the two resonance modes of the mechanical resonator. Accordingly, the mechanical resonator is configured to produce at least one phononic frequency comb in response to a motion of the mechanical resonator caused by the electrical signal.

Abstract: A resonant body high electron mobility transistor is described with resonance frequencies in gigahertz regime, limited by the cutoff frequency of the readout transistor. Piezoelectric materials form the resonating membrane of the device. Different modes of acoustic resonance, such as a thickness-mode, can be excited and amplified by applying an AC signal to the transducer electrode and proper biasing of all electrodes. The drain electrode reads out the acoustic resonance and amplifies it. The drain electrode is placed at or near where the piezoelectric charge pickup is maximum; whereas, the source electrode is placed at a nodal point with minimum displacement.

Abstract: A resonant body high electron mobility transistor is described with resonance frequencies in gigahertz regime, limited by the cutoff frequency of the readout transistor. Piezoelectric materials form the resonating membrane of the device. Different modes of acoustic resonance, such as a thickness-mode, can be excited and amplified by applying an AC signal to the transducer electrode and proper biasing of all electrodes. The drain electrode reads out the acoustic resonance and amplifies it. The drain electrode is placed at or near where the piezoelectric charge pickup is maximum; whereas, the source electrode is placed at a nodal point with minimum displacement.