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Micromachines
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Applications of Pulsed Laser in Synthesis, Nanostructured Materials, and Spectroscopic...
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Applications of Pulsed Laser in Synthesis, Nanostructured Materials, and Spectroscopic Measurements for Optoelectronics and Environmental Fields

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "E：Engineering and Technology".

Deadline for manuscript submissions: closed (20 September 2023) | Viewed by 1685

Special Issue Editor

Dr. Ayman Mohamed Mostafa

E-Mail Website
Guest Editor
Department of Physics, College of Science, Qassim University, Buraydah 51452, Saudi Arabia
Interests: laser ablation; thin films; nanostructured materials; ultra-fast laser spectroscopy; optoelectronics; water treatment; LIBS; pulsed laser deposition

Special Issue Information

Dear Colleagues,

In recent years, laser fabrication technology has been widely used in both industry and academia, including for laser ablation, laser cleaning, additive, subtractive, and modification manufacturing. By decreasing a laser’s pulse duration, ablating a small but precise amount of material has become possible without significant thermal damage to the workpiece; this process allows us to fabricate ultra-fine structures at nano- and microscales using laser ablation. These laser-induced surface structures have received a great deal of research attention due to their unique capabilities of functionalizing material surfaces.

This Special Issue aims to highlight the latest developments in advanced laser fabrication technologies and novelty applications. Potential topics include but are not limited to:

  • Laser fabrication of novel micro/nanostructured surfaces;
  • Fundamental theoretical and technical aspects of the laser fabrication of micro/nanomaterials;
  • Etching (plasma and wet bath)-assisted laser fabrication technology;
  • Laser-induced micro/nanostructures;
  • Laser ablation/cleaning/cutting;
  • Laser spectroscopic analysis using laser-induced breakdown spectroscopy or time-resolved spectroscopy;
  • Imaging via ultra-fast laser pulse transmission/scanning electron microscope;
  • Multi-layer preparation based on pulsed laser deposition

We look forward to receiving your contributions.

Dr. Ayman Mohamed Mostafa
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • laser micro/nano fabrication
  • micro/nano optics
  • laser ablation
  • laser cleaning
  • laser cutting
  • subtractive/additive processing

Published Papers (1 paper)

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Research

13 pages, 5431 KiB  
Article
Anticancer Activity of Au/CNT Nanocomposite Fabricated by Nanosecond Pulsed Laser Ablation Method on Colon and Cervical Cancer
by Abbad Al Baroot, Khaled A. Elsayed, Firdos Alam Khan, Shamsuddeen A. Haladu, Filiz Ercan, Emre Çevik, Q. A. Drmosh and M. A. Almessiere
Micromachines 2023, 14(7), 1455; https://doi.org/10.3390/mi14071455 - 20 Jul 2023
Cited by 3 | Viewed by 1350
Abstract
Gold nanoparticles (AuNPs) and carbon nanotubes (CNTs) are increasingly being investigated for cancer management due to their physicochemical properties, low toxicity, and biocompatibility. This study used an eco-friendly technique (laser synthesis) to fabricate AuNP and Au/CNT nanocomposites. AuNPs, Au/CNTs, and CNTs were tested [...] Read more.
Gold nanoparticles (AuNPs) and carbon nanotubes (CNTs) are increasingly being investigated for cancer management due to their physicochemical properties, low toxicity, and biocompatibility. This study used an eco-friendly technique (laser synthesis) to fabricate AuNP and Au/CNT nanocomposites. AuNPs, Au/CNTs, and CNTs were tested as potential cancer nanotherapeutics on colorectal carcinoma cells (HCT-116) and cervical cancer cells (HeLa) using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. In addition, the non-cancer embryonic kidney cells HEK-293 were taken as a control in the study. The cell viability assay demonstrated a significant reduction in cancer cell population post 48 h treatments of AuNPs, and Au/CNTs. The average cell viabilities of AuNPs, Au/CNTs, and CNTs for HCT-116 cells were 50.62%, 65.88%, 93.55%, and for HeLa cells, the cell viabilities were 50.88%, 66.51%, 91.73%. The cell viabilities for HEK-293 were 50.44%, 65.80%, 93.20%. Both AuNPs and Au/CNTs showed higher cell toxicity and cell death compared with CNT nanomaterials. The treatment of AuNPs and Au/CNTs showed strong inhibitory action on HCT-116 and HeLa cells. However, the treatment of CNTs did not significantly decrease HCT-116 and HeLa cells, and there was only a minor decrease. The treatment of AuNPs, and Au/CNTs, on normal HEK-293 cells also showed a significant decrease in cell viability, but the treatment of CNTs did not produce a significant decrease in the HEK-293 cells. This study shows that a simplified synthesis technique like laser synthesis for the preparation of high-purity nanomaterials has good efficacy for possible future cancer therapy with minimal toxicity. Full article
(This article belongs to the Special Issue Applications of Pulsed Laser in Synthesis, Nanostructured Materials, and Spectroscopic Measurements for Optoelectronics and Environmental Fields)
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