摘要
基于弹道粒子-团簇模型,模拟了多分散生物凝聚粒子模型,采用离散偶极子近似方法计算了具有不同孔隙率、原始颗粒数量、粒径分布方式的多分散生物凝聚粒子模型的消光系数,分析了孔隙率、原始颗粒数量和粒径分布对凝聚粒子消光特性的影响。结果表明:多分散生物凝聚粒子的消光系数随着孔隙率的增大而减小;凝聚粒子包含的原始颗粒数量越多,粒径分布的均值越大,消光系数越大;粒径分布方差对消光系数没有明显的影响。本研究结果为全面理解生物凝聚粒子的消光性能以及生物消光材料的制备提供了参考。通过改变生物凝聚粒子的孔隙率、原始颗粒数量和粒径分布可以提高生物材料的消光性能。
Objective Compared to traditional inorganic extinction materials,biomaterials have advantages relative to environmental protection,non-toxicity,low cost,and controllable form.Thus,biomaterials have become a new type of extinction material.Research into the extinction properties of biomaterials has received increasing attention.And research into the extinction properties of biological aggregate particles is key to studying the extinction properties of biomaterials.The current research results primarily focus on monodisperse biological agglomerate particles;however,in the real-world,there are almost no agglomerate particles with the same radius.Therefore,polydisperse biological agglomerate particles are closer to the actual situation and have greater research value.This paper simulates the polydisperse biological aggregation particles model and calculates the influence of the number of original particles,porosity,and particle size distribution on the extinction performance of polydisperse biological aggregate particles.The purpose of the paper is to calculate factors affecting the extinction performance of biological aggregate particles and provide a reference for future in-depth studies of the extinction properties of biomaterials.Methods The polydisperse biological aggregation particles model is simulated based on the ballistic particle-cluster aggregation model.The influence of the gyration radius on the porosity and equivalent complex refractive index of aggregate particles is studied.Using the discrete dipole approximation method,we analyze the influence of porosity accuracy on extinction coefficient.In addition,we calculate the extinction coefficient of the polydisperse biological aggregation particles model with different porosity,different numbers of original particles,and different particle size distributions,and we analyze the influence of porosity,particle number,and size distribution on the extinction characteristics of aggregate particles.Results and Discussions The results demonstrate that the porosit
作者
陆卫
顾有林
方佳节
胡以华
丁婉莹
王新宇
陈曦
Lu Wei;Gu Youlin;Fang Jiajie;Hu Yihua;Ding Wanying;Wang Xinyu;Chen Xi(State Key Laboratory of Pulsed Power Laser Technology,National University of Defense Technology,Hefei Anhui 230037 China;Advanced Laser Technology Laboratory of Anhui Province,Hefei Anhui 230037 China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2021年第4期282-289,共8页
Chinese Journal of Lasers
基金
国家自然科学基金(62075241)
先进激光技术安徽省实验室基金(20191003)。
关键词
材料
凝聚粒子
离散偶极子近似
消光系数
影响因素
materials
aggregate particles
discrete dipole approximation
extinction coefficient
influencing factors
