Cesium lead halide perovskite nanocrystals have recently become emerging materials for color conversion in visible light communication (VLC) and solid-state lighting (SSL), due to their fast response desirable optical properties. Herein, nanocrystal-polymethyl methacrylate (PNC-PMMA) films with red yellow emission are prepared. The PNC-PMMA films, properties such as a short lifetime air stability, used make broadband converters based on high-bandwidth 75 μm blue micro-LED (μLED) VLC....

Visible light communication (VLC) based on a light-emitting diode (LED) suffers from limited bandwidth of commercial LED, device nonlinearity, channel distortion, and transmitted power caused by complex free-space channel, amplifier, illuminant devices resulting in data rate. In this Letter, to provide an alternative high-speed solution, we first designed fabricated three 175 µm tricolor mini-LEDs with various wavelengths. They are used set up spatial division multiplexing-wavelength...

In this work, we experimentally achieved a real-time video optical wireless transmission which can broadcast two users in different positions, simultaneously. Firstly, single-pixel 50-μm micro-LED is designed and fabricated on GaN-based wafer then chips are connected as parallel form single bulb. The transceiver based FPGA boards used to generate quadrature amplitude modulation-orthogonal frequency division multiplexed (QAM-OFDM) signals measure the communication performance of VLC system....

Precise gene regulation and programmable RNA editing are vital RNA-level regulatory mechanisms. Gene repression tools grounded in small non-coding RNAs, microRNAs, CRISPR-dCas proteins, along with anchored Adenosine Deaminases acting on (ADARs), have found extensive application molecular biology cellular engineering. Here, we introduced a novel approach wherein developed an EcCas6e mediated crRNA-mRNA annealing system for Escherichia coli Saccharomyces cerevisiae. We that possesses inherent...

As an important supplement to radio frequency (RF) communication in a crowded indoor environment, high-speed multi-user visible light (VLC) is promising candidate for practical application compared with point-to-point architecture. In this work, area division concept proposed based on the multi-directional low-cost array transmitter. For first time, series of parallel mini/micro-LEDs transmitters various chip sizes are designed, fabricated and packaged, which used build VLC link. The...

Infrared optical wireless communication system can achieve ultrahigh capacity and high privacy data transmission. However, for using narrow infrared laser beam as carrier to transmit signal, the high-speed transmission only be achieved by point-to-point connection. With rapid number increasement of consumer electronic devices, such connection method puts a heavy burden on transmitters. Thus, transmitting end with point-to-multipoint capability or multi-user accessibility is required. In this...

By using narrow infrared (IR) optical beams, wireless communication (OWC) system can realize ultra-high capacity and high-privacy data transmission. However, due to the point-to-point connection approach, a high accuracy localization beam-steering antenna (BSA) are required steer signal beam user terminals. In this paper, we proposed an indoor IR OWC with calibration-free ability by employing coaxial frequency modulated continuous wave (FMCW) light detection ranging (LiDAR) system. meantime,...

At present, the research on physical composition and properties of pineapple plants is scarce, uncertainty fruit picking method key bottleneck factor hindering development harvesting machinery. Based statistics survey data from many places, this paper analyzes fruit-stem fracture mechanism theoretical conditions for optimal separation through structural modeling, mechanical behavior analysis function judgment. On basis, "pineapple plant fixation bench" "fruit-stem bending torque test...

We propose an asynchronous visible light positioning (VLP) scheme based on a new orthogonal pseudo-random code (OPRC). High VLP accuracy up to 4 cm can be achieved with no need for synchronization among transmitters.

We demonstrate a novel modulation format recognition method using transfer learning for OFDM-VLC systems. The proposed AlexNet/GoogLeNet-TL-based scheme significantly improves accuracy over large SNR range in practical scenarios with small training datasets available.

We demonstrated an indoor beam-steered optical wireless communication system with a downlink transmission of 17 Gbps at 3-meter distance and it features calibration-free user terminal localization enabled by LiDAR millimeter level ranging accuracy.

SAR technology has been intensively implemented for geo-sensing and mapping purposes due to its advantages of high azimuthal resolution weather-independent operation compared other remote sensing technologies. Modelling image data consequently becomes a prominent topic interest, especially populations with impulsive signal features, which are common in images urban areas. A recently proposed model named Cauchy-Rician manifested great potential modelling extremely heterogeneous images, yet...

This article introduces a novel probability distribution model, namely Complex Isotropic {\alpha}-Stable-Rician (CI{\alpha}SR), for characterizing the data histogram of synthetic aperture radar (SAR) images. Having its foundation situated on L\'evy {\alpha}-stable suggested by generalized Central Limit Theorem, model promises great potential in accurately capturing SAR image features extreme heterogeneity. A parameter estimation method based generalization moments to expectations Bessel...

SAR technology has been intensively implemented for geo-sensing and mapping purposes due to its advantages of high azimuthal resolution weather-independent operation compared other remote sensing technologies. Modelling image data consequently becomes a prominent topic interest, especially populations with impulsive signal features, which are common in images urban areas. A recently proposed model named Cauchy-Rician manifested great potential modelling extremely heterogeneous images, yet...

In order to improve the quality of pricking hole and reduce throwing soil as merering field, this paper presents a method off-centre embedded mechanism operation. Established mathematical model mechanism, preparation computer aided analysis platform by using VB software, simulation effects are buried eccentricity, rocker arm length, connected with handle, swing rod length angle connecting handle parameters related initial position. One group optimization parameters: radial eccentricity 50mm,...

The complex terrain environment in the hilly land directly affects operational reliability of agricultural robots. In order to study impact road irregularity on walking chassis vibration, 3SYLZ-750 remote-controlled weeding machine which is applied orchards was taken as object study, and rear roller selected observation reveal rules under vibration track changes there a sudden change surface elevation. A column-type test-to-pass method based unit excitation proposed this study. behavior...

We propose a real-time long-distance POF-based VLC system using green LD and FPGA. Various OFDM formats are implemented to reach 28.25 Mbps video transmission over 100-meter POF channel.