Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for controlling equipment are provided. One of the method includes: acquiring distance data between a current position and a target position of transportation equipment; and controlling operations of the transportation equipment and a lifting device of the transportation equipment according to the distance data, comprising: determining, based on a current elevation of the lifting device, a target elevation of the lifting device, and the distance data, an elevating speed of the lifting device and a travel speed of the transportation equipment; and controlling the lifting device to elevate or lower at the elevating speed from the current elevation to the target elevation, and controlling the transportation equipment to travel at the travel speed.

Abstract: The present disclosure belongs to the field of application of protein, and relates to use of a protein in predicting properties of a drug. The drug comprises pesticides, human drugs and veterinary drugs, and the protein is applied in the following steps: preparing a 0.02 M phosphate buffer solution with pH value of 7.4; dissolving and diluting a protein solution with the prepared buffer solution according to a signal value to obtain a protein diluent; mixing the prepared protein diluent with the drug to be tested in a molar ratio of 1: (1-300) to obtain a mixed solution to be tested, and predicting the drug properties by using fluorescence spectrum, synchronous fluorescence, three-dimensional fluorescence, circular dichroism spectrum, UV-Vis absorption spectrum, linear spectrum or band spectrum.

Abstract: Methods and systems for using a MEMS mirror for steering a LiDAR beam and for minimizing statically emitted light from a LiDAR system are disclosed. A LiDAR system includes a light source that emits a light beam directed at a MEMS device. The MEMS device includes a manipulable mirror that reflects the emitted light beam in a scanning pattern. The MEMS device also includes a substrate positioned adjacent to and at least partially surrounding the mirror. An attenuation layer is disposed on a top surface of the substrate and is configured to attenuate light reflected by the substrate.

Abstract: Embodiments of the disclosure provide a micromachined mirror assembly having multiple coating layers. In one example, the micromachined mirror assembly includes a micro mirror having a first thermal expansion coefficient, a reflective layer having a second thermal expansion coefficient, and a compensation layer having a third thermal expansion coefficient. The reflective layer is disposed on a top surface of the micro mirror and is reflective to incident light of the micromachined mirror assembly. The compensation layer is disposed on the reflective layer and is transparent to the incident light of the micromachined mirror assembly. The first thermal expansion coefficient is between the second thermal expansion coefficient and the third thermal expansion coefficient.

Abstract: An electrode catalyst for an oxygen reduction reaction including intermetallic L10-NiPtAg alloy nanoparticles having enhanced ORR activity and durability. The catalyst including intermetallic L10-NiPtAg alloy nanoparticles is synthesized by employing silver (Ag) as a dopant and annealing under specific conditions to form the intermetallic structure. In one example, the intermetallic L10-NiPtAg alloy nanoparticles are represented by the formula: NixPtyAgz wherein 0.4?x?0.6, 0.4?y?0.6, z?0.1.

Abstract: Embodiments of the disclosure provide a micromachined mirror assembly. The micromachined mirror assembly includes a micro mirror, a first suspended beam, a second suspended beam, a first actuator, and a second actuator. The micro mirror is configured to tilt around an axis. The first suspended beam and second suspended beam each is mechanically coupled to the micro mirror along the axis. The first actuator is mechanically coupled to the first suspended beam and configured to apply a first torsional stress around the axis to the first suspended beam. The second actuator is mechanically coupled to the second suspended beam and configured to apply a second torsional stress around the axis to the second suspended beam. the first torsional stress and second torsional stress have a magnitude difference.

Abstract: Systems and methods for operating an array of micro-mirror assemblies are provided. In one example, an apparatus comprises: a light source; a receiver; and a semiconductor integrated circuit comprising a microelectromechanical system (MEMS) and a controller, the MEMS comprising an array of micro-mirror assemblies, each micro-mirror assembly comprising: a micro-mirror connected to a substrate of the semiconductor integrated circuit via an elastic connection structure and rotatable around the connection structure to perform at least one of: reflect light from the light source along an output projection path, or reflect input light propagating along an input path to the receiver. The controller is configured to generate a control signal to rotate the micro-mirrors based on a target rotation angle and a spring stiffness of one or more connection structures of the array of micro-mirror assemblies.

Abstract: This disclosure provides a device that includes a graphene membrane and a first electrode proximate a first side of the graphene membrane, the first electrode being electrically conductive. The device further includes a frame comprising a first part and a second part, wherein the graphene membrane is suspended between the first part and the second part. The device is configured to have a frequency response across a frequency range at least from 20 Hz to 20 kHz or across the entire human audible frequency range. The device is a microphone or a loudspeaker.

Abstract: Embodiments of the disclosure provide a design method for a LiDAR scanning mirror. The design method may include determining, by at least one processor, design parameters of the LiDAR scanning mirror and computing one or more mirror performance indexes, by the at least one processor, by applying a Finite Element Analysis (FEA) model to the design parameters. The method may further include when the mirror performance indexes meet a predetermined target performance, providing the design parameters determined by the at least one processor for making the LiDAR scanning mirror.

Abstract: A method comprising: adhering a first surface of a mask to a carrier substrate via a first adhesive layer; forming a second adhesive layer on at least one of a second surface of the mask or a third surface of a wafer having a second alignment mark; bringing the carrier substrate and the wafer towards each other along a vertical axis such that the second surface of the mask and the third surface of the wafer is separated by an alignment gap based on a thickness of the second adhesive layer; performing an alignment operation based on imaging the first alignment mark and the second alignment mark; configuring the second surface of the mask to adhere to the third surface of the wafer via the second adhesive; and disconnecting the carrier substrate from the mask.

Abstract: Some embodiments include a MEMS apparatus configured to redirect light in a LiDAR system and includes a support frame and a plurality of mirror elements disposed in a linear array within the support frame including a first mirror element and a second mirror element. Each of the plurality of mirror elements can be rotatable on a rotational axis that is perpendicular to a line defined by the linear array of the plurality of mirror elements and bisects the corresponding mirror element into a first portion and a second portion. The apparatus can include a coupling element having a distal end physically coupled to a first portion of the first mirror element and a proximal end physically coupled to a second portion of the second mirror element such that a rotation of the first mirror element causes a synchronous and equal rotation of the second mirror element.

Abstract: Embodiments of the disclosure provide systems and methods for an optical sensing system steering optical beams with a wedge prism. An exemplary system may include a scanner configured to steer an emitted optical beam towards an object. The system may further include a wedge prism configured to receive an optical beam returned from the object and refract the returned optical beam towards the scanner. The scanner is further configured to steer the refracted optical beam to form a receiving optical beam in a direction non-parallel to the emitted optical beam.

Abstract: Embodiments of the disclosure provide a range estimation system for the optical sensing system. The exemplary range estimation system includes an optical detector array configured to receive a laser pulse returned from an object. The optical detector array includes a plurality of detector elements each configured to measure an intensity of the returned laser pulse. The range estimation system further includes a processor. The processor is configured to calculate an intensity-related value based on the intensities of the returned laser pulse measured using the optical detector array. The processor is further configured to determine a traveling time of the laser pulse based on the calculated intensity-related value. The processor is also configured to estimate a range between the object and the optical sensing system based on the traveling time of the laser pulse.

Abstract: According to certain embodiments, a micro-electromechanical system (MEMS) apparatus has a MEMS mirror structure with a rotatable mirror. Rotation of the mirror produces a change in a measured capacitance corresponding to an angle of rotation. The MEMS structure sits on an oxide layer deposited on a substrate. There is a parasitic capacitance between the MEMS mirror structure and the substrate. An added capacitance is provided between the substrate and a DC voltage source. The added capacitance is much larger than the parasitic capacitance, and shunts the parasitic capacitance to ground to minimize its effect on the measured capacitance.

Abstract: Embodiments of the disclosure provide a design method for a LiDAR scanning mirror. The design method may include receiving, by a communication interface, design parameters of the LiDAR scanning mirror. The design method may further include setting, by at least one processor, an initial value and a step size for each design parameter. The design method may also include adjusting the design parameters according to the respective step sizes. The design method may additionally include computing one or more mirror performance indexes, by the at least one processor, by applying a Finite Element Analysis (FEA) model to the adjusted design parameters. The design method may further include determining that the mirror performance indexes meet a predetermined target performance. The design method may also include providing, by the at least one processor, the adjusted design parameters and the mirror performance indexes for making the LiDAR scanning mirror.

Abstract: Methods and systems for using a dual sided MEMS mirror for determining a direction of steered light are disclosed. In one example a MEMS package includes a substrate defining an aperture and a dual sided MEMS mirror is positioned over the aperture. A first surface of the MEMS mirror is used to steer a LiDAR beam that is used to perform LiDAR imaging of an area of interest. As the mirror is moved, a second surface of the mirror reflects a sensing beam onto a detector array. Data from the detector array is used to determine an orientation of the mirror which can then be used to determine a direction of the steered LiDAR beam. The MEMS package can form an enclosure for the MEMS mirror that includes a first and a second transparent window attached to two opposing surfaces of the substrate.

Abstract: Disclosed are a method and system for controlling a display condition which is pre-written into a passive light board by a mobile device. A display status is pre-written into a passive light board which is not powered by electricity before, and a control application program loaded into the mobile device is provided for a user to input a brightness parameter and a color temperature parameter. The light board which is not powered by electricity before can carry out the presetting of the display condition, and related manufacturers can set the light boards quickly and easily after the light boards exit the factory, and the light boards can display according to the conditions in compliance with the brightness parameter and the color temperature parameter after the light boards are powered on.

Abstract: Embodiments of the disclosure provide an optical sensing system, a range estimation system for the optical sensing system, and a method for the optical sensing system. The exemplary optical sensing system includes a transmitter configured to emit a plurality of laser pulses towards an object. The optical sensing system further includes a range estimation system configured to estimate a range between the object and the optical sensing system. The range estimation system includes an analog to digital converter (ADC) configured to convert a plurality of laser pulses returned from an object to a digital signal. The ADC has a predetermined sampling period. The exemplary system further includes a processor. The processor is configured to calculate an intensity ratio between two data points selected from the digital signal.

Abstract: Embodiments of the disclosure provide systems and methods for reflecting optical signals in an optical sensing system. An exemplary receiver of the optical sensing system includes a detector array configured to detect the optical signals. The detector array includes a plurality of intertwined detectors arranged to each cover a scanning range in a first direction. The scanning range covered by each detector among the plurality of intertwined detectors partially overlaps with the scanning range covered by at least one of its neighboring detectors. The receiver also includes a controller operatively coupled to the detector array, configured to process the optical signals detected by the detector array.

Abstract: Embodiments of the disclosure provide methods of bonding silicon wafers. An exemplary method may include cleaning the silicon wafers to remove residues. The method may also include performing a hydrophilic treatment to surfaces of the silicon wafers to increase surface energy. The method may also include pre-bonding the silicon wafers at room temperature. In addition, the method may include performing a rapid thermal annealing treatment to the pre-bonded silicon wafers to bond the silicon wafers.