Article
Optics
Biplab Jyotiranjan Jena, S. Das, S. Senapati, R. Naik
Summary: The study investigates the time dependent laser induced effects on the linear and nonlinear optical properties of Ag2S/As2Se3 heterostructure films. The intermixing of Ag2S and As2Se3 layers forms an Ag-S-Se-As solid solution, which leads to changes in absorption edge and other optical parameters. The transmittance gradually saturates while the absorbance slightly increases. Changes in film's structure result in a reduction in bandgap and an increase in static refractive index and nonlinear refractive index upon laser irradiation. The film's stability and morphology make it suitable for optoelectronic applications, especially under laser exposure.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Physics, Applied
P. Priyadarshini, D. Sahoo, D. Alagarasan, R. Ganesan, S. Varadharajaperumal, Ramakanta Naik
Summary: The research demonstrates the transformation of amorphous to crystalline structure in Bi/In2Se3 through energy radiation and thermal annealing, leading to changes in optical properties. The study highlights the significant impact of annealing and irradiation on the linear and nonlinear optical properties of Bi/In2Se3.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Ameni Rebhi, Anouar Hajjaji, Joel Leblanc-Lavoie, Salma Aouida, Mounir Gaidi, Brahim Bessais, My Ali El Khakani
Summary: This study investigates the changes in the properties of PbS films deposited by pulsed laser deposition (PLD) as the background pressure of helium (P-He) varies. Increasing He pressure leads to changes in morphology, crystallite size, lattice parameter, Raman peak, and optical bandgap of the films. The electrical resistivity also increases with P-He, with a maximum value reached at P-He = 300 mTorr.
Article
Materials Science, Multidisciplinary
Hua Zhou, Xiaxia Liao, Shanming Ke, Xin Liu, Jingdi Lu, Jinxing Zhang, Shujun Hu, Mingchun Xu, Lihui Bai, Shishen Yan
Summary: The growth temperature of Nb-STO film significantly affects the Nb-STO/ITO interface relationship, sheet resistance, and electron mobility.
RESULTS IN PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Younggeun Lee, Jinhyeong Kwon, Jaemook Lim, Wooseop Shin, Sewoong Park, Eunseung Hwang, Jaeho Shin, Hyunmin Cho, Jinwook Jung, Hyun-Jong Kim, Seungyong Han, Habeom Lee, Yong Son, Cheol Woo Ha, Prem Prabhakaran, Junyeob Yeo, Seung Hwan Ko, Sukjoon Hong
Summary: The proposed digital laser micropainting technique utilizes controlled thin-film interference to directly grow an absorbing metal oxide layer on a metallic reflector in a solution environment via laser. By tuning the reflection spectrum in a broad visible spectrum according to the laser fluence, this technique offers scalability and controllability for modifying original coloration. Additionally, the technique has shown potential in reprogrammable optoelectronic applications by demonstrating the ability to assign, erase, and reassigned specific wavelength-dependent photoresponsivity.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Optics
Ammar Qasem, Shoroog Alraddadi, Eshraq Al -Amery, H. A. Alrafai, E. R. Shaaban
Summary: This work investigates the effects of laser treatment on nanostructured nickel oxide (NiO) thin films. X-ray diffraction and scanning electron microscopy were used to analyze the structural properties and morphology of the films. The results showed that the NiO cubic phase was the dominant crystalline phase and laser treatment caused changes in the morphological structure. Optical characteristics, such as energy band gaps and optical constants, were also affected by the laser treatment. Furthermore, the laser treatment significantly decreased the sheet resistance and figure of merit of the films, and various electronic energies were computed.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Min Li, Satoshi Komasa, Shigeki Hontsu, Yoshiya Hashimoto, Joji Okazaki
Summary: This study used pulsed laser deposition to deposit a fluorinated hydroxyapatite film on a zirconia implant, creating a biologically active surface. The results showed that the film enhanced cell activity, alkaline phosphatase activity, cell mineralization, and new bone volume, indicating improved long-term survival of dental implants.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Mohammadreza Nazemi, Sajanlal R. Panikkanvalappil, Chih-Kai Liao, Mahmoud A. Mahmoud, Mostafa A. El-Sayed
Summary: Utilizing femtosecond laser-induced atomic redistribution of metal domains in bimetallic Au-Pd nanorods can enhance photocurrent response. Optimizing the structure and composition of bimetallic Au-Pd nanoparticles helps balance the trade-off between light absorption effect and catalytic activity. This study provides guidance for designing hybrid plasmonic-catalytic nanostructures for solar-fuel-based applications.
Article
Materials Science, Ceramics
Hidetoshi Miyazaki, Yosuke Yamashita, Takeshi Tsuji, Wenchang Yeh, Shinya Tsukada
Summary: SiO2-coated BaTiO3 (BT) powder was used to prepare BT films on Au/stainless steel substrates by pulsed electrophoretic deposition. The BT films were sintered with a semiconductor laser and showed improved dielectric and ferroelectric properties. Laser irradiation promoted the sintering of the BT film and reduced its thickness, resulting in increased remanent polarization and coercive field.
CERAMICS INTERNATIONAL
(2023)
Article
Optics
Ahmed Ali Ejam, Nihal A. AbdulWahhab
Summary: Thin films of copper phthalocyanine blue were deposited on a glass substrate of 219.12 nm thickness using a spin coating technique at room temperature. The films were then irradiated at different laser wavelengths (650, 532, and 405 nm) for varying times (0, 10, 20, and 30 min). The optical properties of the films were measured before and after irradiation. It was observed that the absorbance and reflectance decreased with increasing irradiation time, and this behavior was consistent for all laser wavelengths. The energy gap also increased with longer irradiation time. XRD and AFM data confirmed the significant impact of laser radiation on the thin films.
LASER PHYSICS LETTERS
(2023)
Article
Materials Science, Ceramics
Yunyan Liu, Ning Jiang, Yao Liu, Dawei Cui, Chang-Feng Yu, Huiqiang Liu, Zhao Li
Summary: Pulsed laser deposition was utilized to prepare tungsten trioxide films on ITO substrates with varying laser power densities. The films exhibited strong absorbance in the near-infrared region and excellent electrochromic properties, with changes in oxygen vacancies and structure observed at different laser power densities.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Raid A. Ismail, N. Hasan, Suaad S. Shaker
Summary: The study focused on the fabrication of Bi2Sr2CaCu2Ox (BSCCO) nanostructure films using pulsed laser deposition technique (PLD) and investigated their structural, optical, and optoelectronic properties. The films exhibited orthorhombic phase and increased grain size with higher laser energy densities, leading to a decrease in optical energy gap. The photodetectors showed rectification properties with different ideality factors and on/off ratios, and a high responsivity was achieved at 860 nm for a specific energy density preparation.
Article
Materials Science, Multidisciplinary
Naveed Ullah, Jianlei Cui, Hailong Yin, Huanhuan Mei, Kaida Xu, Xiaoqiao He, Xuesong Mei
Summary: This article focuses on the fabrication of a thin film of reduced graphene oxide (rGO) through pulsed UV laser irradiation. The study found that the laser power energy has an influence on the thickness, carbon content, oxygen content, electrical resistance, and specific surface area of the fabricated thin film. Laser irradiation leads to the reduction of oxygen and the restoration of sp2 hybridization, resulting in a material with reduced electrical resistance and improved specific surface area. Under specific conditions, a thin film with good electrical conductivity can be obtained.
Article
Engineering, Electrical & Electronic
Mustafa Ilhan, Mumin Mehmet Koc, Burhan Coskun, Mustafa Erkovan, Fahrettin Yakuphanoglu
Summary: Al/n-Si/Ti1-xO2CdxO/Al photodiodes were produced with CdO dopant at different concentrations, showing increased bandgap energy with higher CdO doping rate. The photodiode properties were influenced by Cd doping, resulting in higher photosensitivity and photoresponsivity. Electrical characteristics were frequency-dependent, linked to interface state density which decreased with higher AC signal frequency.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Liangge Xu, Jinye Yang, Kun Li, Lei Yang, Jiaqi Zhu
Summary: This study investigates the effect of post-deposition annealing process on the microstructure and optoelectronic properties of indium-hydroxide-doped thin films. The results show that the annealed films have high carrier mobility and transmittance, and exhibit excellent shielding performance against radar electromagnetic waves. This provides a guideline for fabricating lightweight, thin, and multi-functional shielding infrared transparent materials.