A Particle Morphology Determination Method for Strongly Extinct Biomaterials in the Target Waveband
A technology of biological materials and determination methods, applied in the biological field, can solve the problems of unrealistic research, biological particles, and low work efficiency, and achieve the effect of improving development efficiency, extinction performance, and high accuracy
Active Publication Date: 2020-11-20
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
If the smoke box experiment is used to determine, the work efficiency is low and it is not practical to prepare all biological particles
[0003] In the interdisciplinary field of bio-optics, calculation methods for the extinction characteristics of biological particles have been publicly published, mainly given the shape of biological particles, constructing the spatial structure model of the corresponding particles, and using the electromagnetic scattering calculation model to determine their extinction characteristics. Currently, for biological particles , its shape modeling mainly considers spherical particles and the aggregation model based on spherical particles, and no related research has been carried out on other shapes
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[0043] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0044] The biological terms involved in this embodiment are as follows:
[0045] Biological particles: particles composed of microbial substances, including bacteria, fungi and other microorganisms in nature, as well as fine-scale particles composed of artificially prepared or extracted biological substances (water, protein, cellulose, etc.);
[0046] DDA: The Discrete Dipole Approximation (DDA) method is widely used in the calculation of the extinction characteristics of particles of arbitrary shape.
[0047] Strong extinction: The indicators of different application scenarios will be different, but in this embodiment, strong extinction means that the transmittance of biological materials is lower than 10%.
[0048] This embodiment provides a method for determining the particle morphology of strong extinction biological materi...
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The invention discloses a method for determining the particle morphology of a strong extinction biological material under a target waveband. The method comprises the following steps: constructing geometric models of different particle morphologies of the biological material; calculating a particle form complex refractive index corresponding to each geometric model; determining a first extinction section of a particle morphology corresponding to each geometric model under the equivalent radius in each waveband; selecting a particle morphology corresponding to the maximum first extinction crosssection of the corresponding waveband; determining second extinction sections corresponding to different particle form control parameter values under corresponding wavebands; selecting a particle morphology control parameter value corresponding to the maximum second extinction section of the corresponding waveband; determining third extinction sections corresponding to different particle form volume parameter values under corresponding wavebands; selecting a particle morphology volume parameter value corresponding to the maximum third extinction cross section of the corresponding waveband; anddetermining the particle morphology of the strong extinction biological material under the target waveband. According to the method, the morphology of the biological particles with strong extinctioncan be determined, and the accuracy is high.
Description
technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to a method for determining the particle shape of a strong extinction biological material in a target waveband. Background technique [0002] With the wide application of visible light and infrared imaging instruments, the demand for smoke agents that reduce their working efficiency is becoming more and more urgent. Artificially prepared biological smoke agents have the advantages of rich components, controllable structure, low cost, and easy batch preparation. making it a potential new smoke screen material. There are many types of biological particles that constitute biological smoke agents, with complex components and various shapes. How to determine the morphology of biological particles with strong extinction is very important for the development of biological smoke screen agents, and it is also a very urgent problem to be solved. If the smoke box experiment is used t...
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IPC IPC(8): G01N15/00G16B5/00
CPCG01N15/00G16B5/00
Inventor 顾有林胡以华陆卫丁婉莹杨星石亮王磊王鹏王新宇
Owner NAT UNIV OF DEFENSE TECH