Search Results - Dawei Zhang

In recent years, machine learning (ML) has demonstrated significant potential in corrosion inhibitor molecule research and has emerged as a powerful tool for scientists to explore new and efficient corrosion inhibitors. Corrosion inhibitors are chemical substances used to prevent the corrosion of me...

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Based on the analysis of the algorithm of ghost imaging and channel coding transmission, this paper combines the error detection and correction function of channel coding and accurate transmission of ghost imaging to complete image coding transmission. The mechanism of image transmission...

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On the basis of ghost imaging, this paper proposes a multiple-image encryption scheme combining public key cryptography and Hadamard basis pattern. In the encryption system, a plurality of light paths are set, and the Hadamard basis patterns are used for illumination, so that each light path is conc...

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A compact, tunable linear optofluidic Bragg filter is simulated, designed, fabricated, and characterized. The device consists of a nanocavity sandwiched by two symmetrical film stacks made of high- and low-refractive-index dielectric materials. The fabrication parameters are simulated by using the c...

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For a Hanbury Brown and Twiss system, second-order intensity-correlated imaging through the scattering medium is studied based on a new reconstruction algorithm. The analytical results, which are backed up by numerical simulation and experiments, demonstrate that the imaging quality decreases with t...

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An intensity-tunable filter based on the guided-mode resonance effect that is tuned using elliptically polarized incident light is proposed in this paper. The resonant peak efficiency can be tuned over a range from 3% to 99.9% without shifting the resonant wavelength by varying...

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The exploration of deep learning methodologies has recently generated significant interest in the use of Physics-Informed Neural Networks (PINNs) to address complex physical problems governed by partial differential equations (PDEs). The PINN is trained using information from physical laws, includin...

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Microlenses are essential optics widely used in many fields. The microfluidics-assisted fabrication method provides a rapid, convenient way to manufacture microlenses. However, there is no mathematical model to describe the profile of the liquid surface. This paper provides a theoretical explanation...

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We propose a broadband plasmonic logic source, which is a nanostructure composed of two parallel plasmonic gap waveguides coupled with dual square ring resonators aligned in a vertical or horizontal manner. The numerical simulations show that this configuration has up to 3-bit logic combinations for...

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In this paper, a 2-D anisotropic metasurface for generating an azimuthally polarized beam is structured with a patterned metallic layer, which is composed of a fork hologram and periodically aligned sector-shaped antennas in annular circles. The polarization state of the light is tailed due to the p...

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Background: Patients with COVID-19 exhibited a variety of clinical characteristics. However, there is currently insufficient evidence to delineate the differences in clinical symptomatology between primary infection and reinfection. This study aims to compare the clinical symptom characteristics bet...

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Angular precision of 0.1° for the blaze angle of echelle gratings is an important technical requirement for spectral instruments with echelle gratings. This paper proposes a precise adjustment method for the blaze angle of echelle gratings that are etched or deposited by self-shadowing ro...

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A simplified plasmonic lens composed of a single concentric annular ring with cross section of an asymmetric slot is proposed and investigated. By adding an auxiliary nanocavity under the primary annular slot, unidirectional plasmonic waves are efficiently launched to the inward direction and focuse...

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This paper describes a new method for fabrication of tailorable elastomeric gratings with tunable groove density gradients based on stretching of the grating sample in a direction perpendicular to the grating line within the grating surface. The advantage of this method is that the tunable groove de...

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Liver, the center of substance metabolism, plays a vital role in the hibernation of mammals, a topic arousing increasing interest from researchers around the world. However, it remains unclear how the liver regulates energy metabolism during the hibernation of mammals. Metabolic disorders in the liv...

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Study region: Northern Anhui Plain, China. Study focus: This study analyzed the nitrogen (N) mitigation (N storage in soil, plants, and surface runoff) under drought–flood abrupt alternation (DFAA) in summer maize farmland systems based on field experiments. Soil N loss due to DFAA in the summer mai...

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Variation in feed speed, acceleration, preload and other parameters significantly influence the inertia loss torque and friction torque within the feed system of machine tool. These alterations directly impact the heat generation power (HGP) of each component, which consequently determines the therm...

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Abstract Background The neutrophil‐to‐lymphocyte ratio (NLR) is highly associated with stress responses to acute disorders and may be useful for differentiating hyperglycemia after stroke that is induced by stress or other causes. This study aims to evaluate whether the NLR modifies the effect of hy...

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Abstract Assembling two‐dimensional (2D) nanoflakes into freestanding ultrathin films while maintaining their superior mechanical and functional properties can enable a wide range of applications. In this work, a versatile method is presented, based on supergravity drop casting combined with in‐situ...

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The yellow seed trait is preferred by breeders for its potential to improve the seed quality and commercial value of Brassica napus. In the present study, we produced yellow seed mutants using a CRISPR/Cas9 system when the two BnPAP2 homologs were knocked out. Histochemical staining of the seed coat...

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