High resolution digital holographic microscopy for the study of aggregated natural cellulose nanowhisker fibers |
| |
Affiliation: | 1. Department of Physics, Faculty of Science, Damietta University, New Damietta City, Egypt;2. Division of Fluid and Experimental Mechanics, Luleå University of Technology, Sweden;1. Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, Anhui, PR China;2. School of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu 241000, Anhui, PR China;3. Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui, PR China;1. School of Physics, Shandong University, Jinan 250100, China;2. Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China |
| |
Abstract: | In this paper, digital holographic (DH) microscopy demonstrates its ability to perform a full characterization of nanofibers. The high resolution and magnification of the presented method to study the nanofibers are tested using standard MIL-STD-150A 1951 USAF resolution test target. In this investigation, aggregated natural cellulose nanowhisker fibers are positioned in the front of the microscopic objective using a 3D translation stage in the object arm of DH setup. The recorded off-axis holograms are refocused using the angular spectrum method. The reconstructed complex field is used to calculate optical phase and intensity distributions of the object at different reconstruction depths. A simple algorithm is used to define the focused image with suitable accuracy. The dimensions and orientation of the fibers can be evaluated from the optical field at different depths. Then, the shape and textures along the aggregated natural cellulose nanowhisker fiber can be presented in a 3D space. |
| |
Keywords: | High resolution digital holographic microscopy Digital holographic Interferometry Optical reconstruction Refractive index Nanofibers |
本文献已被 ScienceDirect 等数据库收录! |
|