Results 1 to 10 of about 49,814 (334)

Advances of hafnium based nanomaterials for cancer theranostics

open access: yesFrontiers in Chemistry, 2023
Hafnium-based nanomaterials (Hf-NMs) have attracted the interest of numerous biomedical researchers by their unique properties. Recent years have witnessed significant advancements in the field of Hafnium-based nanomaterials, particularly in the context ...
Jiayi Wang   +6 more
doaj   +2 more sources

Increasing Iridium Oxide Activity for the Oxygen Evolution Reaction with Hafnium Modification

open access: yesJournal of the American Chemical Society, 2021
Synthesis and implementation of highly active, stable, and affordable electrocatalysts for the oxygen evolution reaction (OER) is a major challenge in developing energy efficient and economically viable energy conversion devices such as electrolyzers ...
Fang Zhao, Bo Wen, Wenhan Niu
exaly   +2 more sources

Metal–Organic Nanosheets Formed via Defect-Mediated Transformation of a Hafnium Metal–Organic Framework

open access: yesJournal of the American Chemical Society, 2017
We report a hafnium-containing MOF, hcp UiO-67(Hf), which is a ligand-deficient layered analogue of the face-centered cubic fcu UiO-67(Hf). hcp UiO-67 accommodates its lower ligand:metal ratio compared to fcu UiO-67 through a new structural mechanism ...
Matthew J Cliffe   +2 more
exaly   +2 more sources

Fabrication of hafnium-based nanoparticles and nanostructures using picosecond laser ablation [PDF]

open access: yesBeilstein Journal of Nanotechnology
This work presents a unique and straightforward method to synthesise hafnium oxide (HfO2) and hafnium carbide (HfC) nanoparticles (NPs) and to fabricate hafnium nanostructures (NSs) on a Hf surface.
Abhishek Das   +9 more
doaj   +2 more sources

Investigation of Hf/Ti bilayers for the development of transition-edge sensor microcalorimeters [PDF]

open access: yesBeilstein Journal of Nanotechnology
The superconducting properties of 85 nm thick hafnium thin films with a 5 nm thick titanium layer on top have been investigated for three different geometries, that is, a film covering the entire 7 × 7 mm2 chip surface, bridges with a width of 200 μm and
Victoria Y. Safonova   +5 more
doaj   +2 more sources

Oxygen diffusion saturation of hafnium with the different surface layer [PDF]

open access: yesЯдерна фізика та енергетика, 2023
Hafnium is used for the production of control rods and protective screens in nuclear reactors after its hot plastic deformation and final thermochemical treatment.
V. S. Trush   +4 more
doaj   +1 more source

Separation of Zirconium and Hafnium from Chloride Solution Using Strongly Basic Anion Resins [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2022
The ion exchange process was employed to separate zirconium from hafnium in solution. To this end, four effective parameters, involving resin type, HCl concentration, Time, and initial zirconium concentration, were selected as the main variables.
Meysam Nemati   +3 more
doaj   +1 more source

Role of oxygen vacancies in ferroelectric or resistive switching hafnium oxide

open access: yesNano Convergence, 2023
HfO_2 shows promise for emerging ferroelectric and resistive switching (RS) memory devices owing to its excellent electrical properties and compatibility with complementary metal oxide semiconductor technology based on mature fabrication processes such ...
Jaewook Lee   +7 more
semanticscholar   +1 more source

Determination of the vapour pressure curves and vaporization enthalpies of hafnium alkoxides using thermogravimetric analysis [PDF]

open access: yesRoyal Society Open Science, 2019
In order to identify a volatile metallo-organic precursor for the deposition of hafnium oxide (HfO2) films for atomic layer deposition (ALD) applications, the evaporative properties of hafnium alkoxides (hafnium isopropoxide, hafnium n-propoxide and ...
Changhong Wang   +2 more
doaj   +1 more source

Multi-level resistive switching in hafnium-oxide-based devices for neuromorphic computing

open access: yesNano Convergence, 2023
In the growing area of neuromorphic and in-memory computing, there are multiple reviews available. Most of them cover a broad range of topics, which naturally comes at the cost of details in specific areas.
M. Hellenbrand, J. MacManus-Driscoll
semanticscholar   +1 more source

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