Molecules featuring a metal centre in a positive valence surrounded by 1,3-dialkyltrianzenide ligands, M[R-NN-N-R'], were shown to have both high thermal stability and volatility, making them interesting as precursors in chemical vapour deposition (CVD) and atomic layer deposition (ALD). So far, metals from groups 11-14 and lanthanoids form stable triazenides and the In and Ga triazenides have proven to be excellent precursors for InN, InO, GaN and InGaN. We believe the exploration of the triazenides as CVD and ALD precursors has only begun and hope to inspire further research with this perspective.
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http://dx.doi.org/10.1039/d4dt02608j | DOI Listing |
This paper explores the process of forming arrays of vertically oriented carbon nanotubes (CNTs) localized on metal electrodes using thin porous anodic alumina (PAA) on a solid substrate. On a silicon substrate, a titanium film served as the electrode layer, and an aluminium film served as the base layer in the initial film structure. A PAA template was formed from the Al film using two-step electrochemical anodizing.
View Article and Find Full Text PDFChem Commun (Camb)
January 2025
CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University Via Marzolo 1, 35131 Padova, Italy.
An original plasma assisted vapor phase route is proposed for the low-temperature fabrication of supported NiO nanostructures on conductive glasses. The sole deposition time variation enables to tailor material properties, modulating, in turn, the system wettability and functional performances in the photodegradation of recalcitrant pollutants.
View Article and Find Full Text PDFDalton Trans
January 2025
Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden.
Molecules featuring a metal centre in a positive valence surrounded by 1,3-dialkyltrianzenide ligands, M[R-NN-N-R'], were shown to have both high thermal stability and volatility, making them interesting as precursors in chemical vapour deposition (CVD) and atomic layer deposition (ALD). So far, metals from groups 11-14 and lanthanoids form stable triazenides and the In and Ga triazenides have proven to be excellent precursors for InN, InO, GaN and InGaN. We believe the exploration of the triazenides as CVD and ALD precursors has only begun and hope to inspire further research with this perspective.
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
Institute of Advanced Materials and Systems, Sookmyung Women's University, Seoul 04310, Republic of Korea.
Multivalued logic (MVL) systems, in which data are processed with more than two logic values, are considered a viable solution for achieving superior processing efficiency with higher data density and less complicated system complexity without further scaling challenges. Such MVL systems have been conceptually realized by using negative transconductance (NTC) devices whose channels consist of van der Waals (vdW) heterojunctions of low-dimensional semiconductors; however, their circuit operations have not been quite ideal for driving multiple stages in real circuit applications due to reasons such as a reduced output swing and poorly defined logic states. Herein, we demonstrate ternary inverter circuits with near rail-to-rail swing and three distinct logic states by employing vdW p-n heterojunctions of single-walled carbon nanotubes (SWCNT) and MoS where the SWCNT layer completely covers the MoS layer.
View Article and Find Full Text PDFChem Res Toxicol
January 2025
Department of Chemical, Environmental, and Materials Engineering, University of Miami, Miami, Florida 33146, United States.
This study employed high-time-resolution systems to examine the transient properties of aerosols and gases emitted from electronic cigarette (EC) puffs. Using a fast aerosol sizer, we measured particle size distributions (PSDs) across various EC brands (JUUL, VUSE, VOOPOO), revealing sizes ranging from 5 to 1000 nm at concentrations of 10 to 10 cm. Most aerosols were found to be in the ultrafine range (below 100 nm), with JUUL-, VUSE-, and VOOPOO-producing aerosols with geometric mean sizes of 19.
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