Using digital holographic microscopy to study transparent thin films

2009 ◽  
Vol 76 (3) ◽  
pp. 147 ◽  
Author(s):  
D. N. Tishko ◽  
T. V. Tishko ◽  
V. P. Titar'
Keyword(s):  
Thin Films ◽  
Digital Holographic Microscopy ◽  
Holographic Microscopy

scholarly journals Characterization of Polarization Holographic Gratings Obtained on Azopolymer Thin Films by Digital Holographic Microscopy

2021 ◽  
Vol 7 (3) ◽  
pp. 030306
Author(s):  
Veronica Cazac ◽  
Constantin Loshmanschii ◽  
Elena Achimova ◽  
Alexei Meshalkin ◽  
Vladimir Abashkin ◽  
...  
Keyword(s):  
Thin Films ◽  
Digital Holographic Microscopy ◽  
Holographic Gratings ◽  
Holographic Microscopy

scholarly journals Digital Holographic Microscopy as Identifier of Ultrafine Particles Emitted during Fused Deposition Modelling

2021 ◽  
Vol 12 (1) ◽  
pp. 65
Author(s):  
Daniel Alberto García-Espinosa ◽  
Miguel León-Rodríguez ◽  
Pedro Yañez-Contreras ◽  
Israel Miguel-Andrés ◽  
José Alfredo Padilla-Medina ◽  
...  
Keyword(s):  
Thin Films ◽  
Additive Manufacturing ◽  
Ultrafine Particles ◽  
Alternative Methods ◽  
Digital Holographic Microscopy ◽  
Fused Deposition Modelling ◽  
Glass Substrates ◽  
Fused Deposition ◽  
Potential Sources ◽  
Holographic Microscopy

Additive manufacturing has acquired a global industrial panorama for being an alternative to redirect the industry towards sustainability. However, previous studies have indicated that fused deposition modelling (FDM) techniques are potential sources of particles that are harmful to health. For this reason, this work is focused on exploring the behaviour and distribution of FDM resultant nanoparticles from the most commonly used printable materials through alternative methods as digital holographic microscopy (DHM). In this paper, we present the feasibility of using DHM to determine the presence of nanoparticles in the FDM process. Experimental results validate this technology’s precision and provide extensive knowledge about the implications of the FDM on health. The measure of the thin films deposited in glass substrates was between a minimum of 9 nm to a maximum of 200 nm, in agreement with the previous studies.

Antifouling mechanism of natural product-based coatings investigated by digital holographic microscopy

2021 ◽  
Vol 84 ◽  
pp. 200-207
Author(s):  
Jiansen Pan ◽  
Qingmei Peng ◽  
Guoliang Zhang ◽  
Qingyi Xie ◽  
Xiangjun Gong ◽  
...  
Keyword(s):  
Natural Product ◽  
Digital Holographic Microscopy ◽  
Holographic Microscopy

scholarly journals Dynamic Speckle Illumination Digital Holographic Microscopy by Doubly Scattered System

Photonics ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 276
Author(s):  
Yun Liu ◽  
Peihua Bu ◽  
Mingxing Jiao ◽  
Junhong Xing ◽  
Ke Kou ◽  
...  
Keyword(s):  
Time Correlation ◽  
Digital Holographic Microscopy ◽  
Laser Source ◽  
Speckle Reduction ◽  
Single Shot ◽  
Coherent Noise ◽  
Real Time Measurement ◽  
Dynamic Speckle ◽  
Holographic Microscopy ◽  
Speckle Suppression

The coherent noise always exists in digital holographic microscopy due to the laser source, degrading the image quality. A method of speckle suppression using the dynamic speckle illumination, produced by double-moving diffusers, is presented in digital holographic microscopy. The space–time correlation functions are theoretically analyzed from the statistics distribution in the doubly and singly scattered system, respectively. The configuration of double-moving diffusers is demonstrated to have better performance in speckle suppression compared with the single diffuser and moving-static double diffusers cases. The experiment results verify the feasibility of the approach. The presented approach only requires a single shot interferogram to realize the speckle reduction, accordingly it has the potential application in real-time measurement.

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