Multi-dimensional (1D, 2D, 3D) Micro/Nanocomposite Thin Films and Crystals

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D:Materials and Processing".

Deadline for manuscript submissions: closed (31 August 2024) | Viewed by 4537

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Instituto de Física, Universidad de Antioquia, Calle 70 No. 52-21, Medellín 050010, Colombia
Interests: biophysics; biomembranes; drug–membrane interaction; phospholipid and cholesterol; lipid bilayer and lipid raft; calorimetry; langmuir films; microscopy
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Physics and Engineering Department, Dillard University, 2601 Gentilly Blvd, New Orleans, LA 70122, USA
Interests: laser ablations; optics; nonlinear optics; EPR; CO2 laser; nanocomposite films; nanocomposite coatings; pulsed laser deposition; MAPLE; optical and chemical sensors; upconversion materials

Special Issue Information

Dear Colleagues,

In the last decades, micromechanics has expanded considerably to many STEM fields, such as wearable devices, MEMS, and microsensors in biomedical, optical and materials applications. This Special Issue will deal with micro and nanocomposite 1D, 2D and 3D thin films and crystals, which are essential for the current technology evolution trends. The study of their physical, thermal and electrical properties different from the bulk materials and on the microscale is of fundamental importance in pushing to develop new materials more active and interactive to human needs. In addition to the improvement methods, the design and fabrication of miniature systems and devices have to be developed and integrated into larger complicated systems.

We welcome theoretical and experimental studies and review articles that provide comprehensive and up-to-date overviews of specific topics within the scope of the Special Issue.

We particularly encourage contributions from colleagues who will attend the IUMRS-ICA/MRM conference: https://mrm2023.jmru.org/ (Kyoto, 11–16 December 2023).

Prof. Dr. Cristiano Giordani
Prof. Dr. Abdalla M. Darwish
Guest Editors

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Keywords

  • micro and nano 1D, 2D, 3D thin film characterization and fabrications
  • mechanical defects on nanocomposite nano thin films
  • physical and optical characterization of nano MEMS
  • micro and nanosensors
  • micro and nanobiomedical devices

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Published Papers (1 paper)

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Research

14 pages, 4910 KiB  
Article
Enhancing Thickness Uniformity of Nb2O5/SiO2 Multilayers Using Shadow Masks for Flexible Color-Filtering Applications
by Tzu-Chien Li, Dong-Lin Li, Jiashow Ho, Chih-Chiang Yu, Sheng-Shih Wang and Jyh-Jier Ho
Micromachines 2024, 15(4), 551; https://doi.org/10.3390/mi15040551 - 21 Apr 2024
Cited by 1 | Viewed by 1255
Abstract
Using a stainless shadow mask combined with a magnetron-ion-assisted deposition (IAD) sputtering system, we investigate the surface morphologies and optical properties of microfilms. Optimal color-filter (CF) coating microfilms with niobium pent-oxide (Nb2O5)/silicon dioxide (SiO2) multilayers on a [...] Read more.
Using a stainless shadow mask combined with a magnetron-ion-assisted deposition (IAD) sputtering system, we investigate the surface morphologies and optical properties of microfilms. Optimal color-filter (CF) coating microfilms with niobium pent-oxide (Nb2O5)/silicon dioxide (SiO2) multilayers on a hard polycarbonate (HPC) substrate, grown at 85 °C and 50 SCCM oxygen flow, can obtain a fairly uniform thickness (with an average roughness of 0.083 and 0.106 nm respectively for Nb2O5 and SiO2 films) through all positions. On a flexible HPC substrate with the Nb2O5/SiO2 microfilms, meanwhile, the peak transmittances measured in the visible range are 95.70% and 91.47%, respectively, for coatings with and without a shadow mask for this new-tech system. For the optimal CF application with a shadow mask, transmittance on each 100 nm band-pass wavelength is enhanced by 4.04% absolute (blue), 2.96% absolute (green), and 2.12% absolute (red). Moreover, the developed new-tech system not only enhances the quality of the films by achieving smoother and uniform surfaces but also reduces deposition time, thereby improving overall process efficiency. For the with-shadow-mask condition, there is little shift at 50% transmittance (T50%), and high transmittance (~97%) is maintained after high-temperature (200 °C) baking for 12 h. These results are well above the commercial CF standard (larger than 90%) and demonstrate reliability and good durability for flexible optical applications. Full article
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