Abstract: System, methods, and other embodiments described herein relate to a high-Q resonant state embedded system in a continuous body. In one embodiment, a system includes a longitudinally extending body that is subject to a flexural wave. The longitudinally extending body is attached to a fixed structure at a first end. The system also includes a mechanical resonator coupled to a surface of the longitudinally extending body along a length dimension of the longitudinally extending body. The mechanical resonator is located at a distance away from a second end of the longitudinally extending body to exhibit an infinite Q factor based on physical properties of the mechanical resonator.

Abstract: A system can be configured to harvest energy from sound waves. The system can include a resonator and an acoustic energy harvester located in the resonator. The acoustic energy harvester can be configured to convert acoustic energy into electrical energy. In some instances, the resonator can be a central resonator, and a plurality of surrounding resonators can be arrayed about the central resonator. The surrounding resonators do not include an acoustic energy harvester.

Abstract: Described herein are alterable optical structures. Also described herein are methods of altering same.

Abstract: A light-activated acoustic resonator and associated methods are described herein. One embodiment measures the level of ambient light in the environment of the light-activated acoustic resonator; causes a moveable member of an electromagnet disposed within a Helmholtz resonator of the light-activated acoustic resonator to be in an extended position that places the Helmholtz resonator in a first acoustic state, when the level of ambient light is less than a predetermined amount; and causes the moveable member to be in a retracted position that places the Helmholtz resonator in a second acoustic state different from the first acoustic state, when the level of ambient light is at least the predetermined amount.

Abstract: Systems described herein relate to sensing pressure. In one arrangement, a pressure sensor is disclosed. The pressure sensor includes a circuit including a resistor, an inductor, and a capacitor. The circuit generates an electrical resonance. The resistor is an elastomer having a resistance and connected to an outer surface of an inflatable. The pressure sensor also includes a resonator connected to the circuit. The resonator generates a mechanical resonance coupling with the electrical resonance to create a detuning frequency having a sublinear dependence on the resistance of the elastomer. A pressure of the inflatable correlates with the detuning frequency.

Abstract: System, methods, and other embodiments described herein relate to tuning a mechanical resonator for detecting a significant value using an electrical resonator that enhances sensitivity. In one embodiment, a system includes a mechanical resonator having a beam coupled to a body. The system also includes an electrical resonator coupled through a patch to the mechanical resonator, the electrical resonator operating as a shunt and having an inductor and a resistor (LR) circuit in series. The system also includes the electrical resonator that detects, associated with a perturbation of the body, an exceptional point (EP) of the mechanical resonator by varying the LR circuit according to a model.

Abstract: A device for superscattering a target acoustic wave may include a body having an outer surface, at least one resonator being defined within the body and extending to an opening defined within the outer surface and configured to cause the superscattering of the target acoustic wave impinging upon the body, and a motor connected to the body and configured to selectively rotate the body.

Abstract: Systems, apparatuses, and methods provide for measuring elastic modulus usable with a tubular object. A sound signal is propagated within the tubular object via a speaker coupled to a proximal end of an impedance tube. The propagated sound signal is measured within the tubular object via a pair of microphones coupled to the impedance tube. An elastic modulus of the tubular object is determined in response to the measurement of the propagated sound signal.

Abstract: The direction of an acoustic wave can be determined using a single microphone. The single microphone can be operatively positioned within an interior of a resonator. The resonator can include a body that includes an aperture, such as a slit, which allows communication between the interior and an exterior of the resonator. The resonator can be configured to rotate. The single microphone can be configured to acquire sound data of an incident acoustic wave. One or more processors can be operatively connected to the single microphone. The one or more processors can be configured to determine a direction of the incident acoustic wave based on the acquired sound data.

Abstract: An energy harvesting system capable of using vibrational or mechanical energy to direct energy along a line to an energy receiver to transfer the vibrational energy. The energy harvesting system includes an energy transmitter capable of turning rotational or vibrational energy into a linear vibration that travels along the line to an energy receiver that takes the vibrational energy stored in the transverse wave and turns it into rotational motion. The rotational motion can then be used to drive an electric generator. A tension control unit provides tension to the line ensuring the amplitude of the transverse wave is at a maxima when it reaches the energy receiver.

Abstract: A method, a system and an intelligent terminal for one-bit quantization DoA estimation, which include: when a quantity of far-field and uncorrelated spatial narrow-band source signals are incident from different directions to a uniform linear array receiver, receiving the narrow-band source signals by a quantity of antenna array elements, and the vector and matrix are used to model the received signals by one-bit quantization to obtain a joint probability mass model of one-bit quantization DoA estimation; deriving the joint probability mass model of one-bit quantization DoA estimation, and constructing an l2,1 norm optimization model based on the maximum likelihood principle; solving the steepest descent direction of the optimization model by steepest descent method to obtain the one-bit quantization DoA and the source number.

Abstract: A tower structure particularly suited for a wind turbine includes a lower tower section formed of concrete and an upper tower section formed of steel. A transition system connects the upper tower section to the lower tower section, the transition system including a concrete component having a tubular wall with a base portion fixed on the lower tower section and a head portion connected to the upper tower section. The head portion extends radially outward beyond the upper tower section. A plurality of first tensioning tendons extend longitudinally at least partially through the tubular wall and are anchored to the concrete component at a top face of the head portion at locations radially outward of the upper tower section.

Abstract: The present invention is directed to a shape memory alloy, particularly a Fe-based shape memory alloy, that is suitable for use in additive manufacturing methods, as well as methods of use and methods of altering the composition of the alloy during fabrication.

Abstract: A thermal diode includes: a dielectric enclosure having a top surface, a bottom surface, a first side, and a second side; a first Weyl semimetal nanoparticle disposed on the first side; a second Weyl semimetal nanoparticle disposed on the second side; a nanograting disposed on the bottom surface; and a voltage source configured to provide a voltage bias to the nanograting to suppress surface waves from the first Weyl semimetal nanoparticle to the second Weyl semimetal nanoparticle and to modify surface waves from the second Weyl semimetal nanoparticle to the first Weyl semimetal nanoparticle.

Abstract: Provided are a new herpes simplex virus type I, a genetically modified herpes simplex virus, a composition containing the virus, a host cell and a cell culture, and the use of the virus in the treatment of diseases.

Abstract: Embodiments of the present invention provide an input data conversion device, comprising: a scheduling unit, to generate a control command according to the size/dimension of the input data and the size/stride of a filter, to control actions of a data moving unit and a row data expansion unit; the data moving unit, to actively read an input data from a system storage space according to the control command of the scheduling unit; a row data caching unit, to store the input data read in; and the row data expansion unit, to read one row of the input data from the row data caching unit each time, and then to expand the row of data into one row data in different filter windows according to the sizes of the filter windows.

Abstract: A method of manufacturing a tower structure includes printing and depositing, via a printhead assembly of an additive printing system, one or more printed layers of a wall of the tower structure. The method also includes unwinding at least one continuous roll of a reinforcement material to form at least one continuous reinforcement ring member layer, the reinforcement material comprising a pultruded polymer material. Further, the method includes placing the at least one continuous reinforcement ring member layer atop the one or more printed layers of the wall of the tower structure. Moreover, the method includes printing and depositing, via the printhead assembly of the additive printing system, one or more additional printed layers of the wall of the tower structure atop the at least one continuous reinforcement ring member layer.

Abstract: A programmable metasurface and method is described having a plurality of parallel slits in an elastic substrate plate defining a plurality of unit cells, each having an actuator beam and a sensing beam with a slit therebetween. Each sensing beam has a pair of sensors for sensing flexural waves in the substrate. The actuator beam has a piezoelectric actuator that is controlled by a control circuit where the control circuit generates an actuator signal and where the control circuit compares the preceding actuator signal to the difference between the sensors and an electrical transfer function to result in the metasurface being able to perform a desired function.

Abstract: The present disclosure is directed to embodiments of a tower structure with at least partially additively manufactured, stacked tower sections. Embodiments of the tower structure have a plurality of stacked tower sections, wherein at least one tower section of the plurality of stacked tower sections includes a wall element having one or more printed layers, and a base holding thereon the one or more printed layers. The present disclosure also is directed to a method of manufacturing a tower structure using a stacked tower sections and additive manufacturing. Embodiments of the method include forming a base of poured concrete or cast material, printing and depositing one or more printed layers to form a wall element, and stacking the plurality of tower sections to form the tower structure.

Abstract: The present invention is directed to a shape memory alloy, particularly a Fe-based shape memory alloy, that is suitable for use in additive manufacturing methods, as well as methods of use and methods of altering the composition of the alloy during fabrication.