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The potential of titanium and copper seed layers to enhance the optical properties of aluminum films for ultra-violet (UV) applications is analyzed. The seed layers significantly influence the initial layer growth of aluminum films. For the titanium-seeded aluminum, a surface roughness of 0.34 nm was observed. UV spectral reflectance measurements showed an average higher reflectivity of 4.8% for wavelengths from 120 nm to 200 nm for the aluminum film grown on the titanium seed layer. Furthermore, the titanium-seeded aluminum coatings were stable at an elevated temperature of 225°C and showed no increase in surface roughness or pinholes.
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http://dx.doi.org/10.1364/OE.395638 | DOI Listing |
Phys Med Biol
September 2025
Zhejiang University, Zijingang Campus of Zhejiang University,Yuhangtang Road No.866,Zhejiang Province, China 310058, Hangzhou, Zhejiang, 310058, CHINA.
Transcranial ultrasound research has garnered significant attention due to its non-invasive nature, absence of ionizing radiation, and portability, making it advantageous for both imaging and therapy. A critical aspect of advancing transcranial research lies in understanding the ultrasound transmission performance of the human skull. However, inherent variations in skull shape, physical parameters, and age-related changes pose challenges for comparative studies.
View Article and Find Full Text PDFJpn J Ophthalmol
September 2025
Department of Ophthalmology, Osaka University Graduate School of Medicine, Room E7, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
Abtract: PURPOSE: To evaluate the correlation between corneal backscatter and visual function in patients with Fuchs endothelial corneal dystrophy (FECD).
Study Design: Prospective case series.
Methods: This study included 53 eyes from 38 patients with FECD.
ACS Nano
September 2025
Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States.
Integration of ultrathin, high-quality gate insulators is critical to the success of two-dimensional (2D) semiconductor transistors in next-generation nanoelectronics. Here, we investigate the impact of atomic layer deposition (ALD) precursor choice on the nucleation and growth of insulators on monolayer MoS. Surveying a series of aluminum (AlO) precursors, we observe that increasing the length of the ligands reduces the nucleation delay of alumina on monolayer MoS, a phenomenon that we attribute to improved van der Waals dispersion interactions with the 2D material.
View Article and Find Full Text PDFAdv Sci (Weinh)
September 2025
Thin Film Materials Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea.
Molybdenum disulfide (MoS) has recently emerged as a promising material for the development of triboelectric nanogenerators (TENGs) owing to its inherently negative triboelectric properties when paired with polymeric layers, along with its notable transparency and mechanical flexibility. However, MoS-based TENGs operating in the contact-separation mode encounter critical limitations, including mechanical wear and limited triboelectric performance, particularly within the constraints of conventional 2D geometries. This paper reports the novel one-step laser-assisted synthesis of hemispherical MoS through the controlled nucleation and growth of MoS precursor seeds.
View Article and Find Full Text PDFJ Colloid Interface Sci
September 2025
College of Control Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China. Electronic address:
Solid-liquid triboelectric nanogenerators (SL-TENGs) have attracted attention for use in water resource collection. However, traditional methods limit improvements in the surface energy density of the friction layer because of insufficient precision. This study used femtosecond laser technology to create three-dimensional bionic structures on polyvinylidene fluoride (PVDF) films.
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