Hafnium Oxides

Hafnium oxide (HfO 2) is an important high-κ dielectric in the microelectronics industry as it is an alternative to SiO 2.To minimize the total oxide thickness, attempts were made to grow HfO 2 directly on oxide-free Si surfaces. Although deposition was ultimately possible, it was shown that there is an incubation period for HfO 2 growth, 75 related to the …

A highly CMOS compatible hafnia-based ferroelectric diode

Müller, J. et al. Ferroelectric hafnium oxide: a CMOS-compatible and highly scalable approach to future ferroelectric memories. in 2013 IEEE International Electron Devices Meeting (IEDM) 10.18.1 ...

Hafnium(IV) oxide powder, 98 1

Hafnium(IV) oxide powder, 98%; CAS Number: 1; EC Number: 235-013-2; find Sigma-Aldrich-202118 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich

Harnessing Hafnium-Based Nanomaterials for Cancer …

The clinical translation of hafnium oxide (HfO 2 ), commercially namedas NBTXR3, as a new kind of nanoradiosensitizer for radiotherapy (RT) of cancers has aroused extensive interest in researches on Hf-based nanomaterials for biomedical application. In the past 20 years, Hf-based nanomaterials have emerged as potential and …

OPEN Numerical analysis of hafnium oxide and phase …

including food analysis, drug testing, and medical diagnostics. Because of its numerous advantages, SPR sensors ... and hafnium oxide (HfO 2)24–26. HfO2 is one such compound that has been the ...

A Novel Cortisol Immunosensor Based on a Hafnium Oxide…

Assessing cortisol levels in human bodies has become essential to diagnose heart failure (HF). In this work, we propose a salivary cortisol detection strategy as part of an easily integrable lab-on-a-chip for detection of HF biomarkers. Our developed capacitive immunosensor based on hafnium oxide (HfO2)/silicon structure showed good linearity …

Hafnium(IV) oxide 99.95+ 1

Hafnium(IV) oxide ≥99.95%; CAS Number: 1; EC Number: 235-013-2; find Sigma-Aldrich-203394 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich

Impact of Europium and Niobium Doping on Hafnium Oxide …

This study compares HfO2 ceramics synthesized using sol–gel and combustion methods, emphasizing the impact of the method of synthesis on the resulting properties of the material. The research findings illustrate morphological differences between sol–gel and combustion-derived HfO2. While sol–gel samples displayed …

Electronic properties of hafnium oxide: A contribution from …

Among the still unresolved material-science problems for hafnium oxide, the most important one is the determination of characteristics of the electron and …

PD-L1 aptamer-functionalized degradable hafnium oxide

Download Citation | PD-L1 aptamer-functionalized degradable hafnium oxide nanoparticles for near infrared-II diagnostic imaging and radiosensitization | Immune checkpoint blockade is now ...

Nanoscale radiotherapy with hafnium oxide nanoparticles

In this study, hafnium oxide nanoparticles were designed that concentrate in tumor cells to achieve intracellular high-energy dose deposit. Materials & methods: Conventional methods were used, implemented in different ways, to explore interactions of these high-atomic-number nanoparticles and ionizing radiation with biological systems. Results ...

Hafnium Oxide (HfO2) – A Multifunctional Oxide: A Review …

Hafnium oxide (HfO 2) is one of the mature high-k dielectrics that has been standing strong in the memory arena over the last two decades. Its dielectric properties have been researched rigorously for the development of …

Silicon Nanowires with High-k Hafnium Oxide …

POC diagnostics and SiNWFETs has been small oligonucleotides, more speci fically, microRNA (miRNA). MicroRNAs are small RNA oligonucleotid es which bind to mRNAs, causing translational ... hafnium oxide-based FETs forbiosensing applications. Annealing of HfO 2 has been shown to improve pH sensitivity in a two-terminal EIS (electrolyte …

Electrical and chemical characterizations of hafnium (IV) oxide …

Hafnium oxide's utilization for biological applications is increasing, especially within nanopore and nanowire structures. HfO 2 increased the sensitivity of silicon-based multi-nanowires for DNA and protein detection due to its chemical stability, pH sensitivity, high dielectric constant, hydrophilicity, and isoelectric point of 7 [20, [37], [38], …

Advanced measurement and diagnosis of the …

In this paper, we developed an easy, accurate, and nondestructive diagnosis to investigate the interface effect of …

Nanomaterials | Free Full-Text | Hafnium Oxide …

In the frame of the nanoarchitectonic concept, the objective of this study was to develop simple and easy methods to ensure the preparation of polymorphic HfO2 thin film materials (<200 nm) having the best balance of patterning potential, reproducibility and stability to be used in optical, sensing or electronic fields. The nanostructured HfO2 thin …

Growth of Hafnium Dioxide Thin Films by Liquid

In addition, gas-phase diagnostics can provide data for validation of equipment-scale process models. Metal alkylamide compounds, ... During hafnium oxide ALD using TEMAH and water, absorbance ...

Hafnium Oxide (HfO2) – A Multifunctional Oxide: A Review …

Hafnium Oxide (HfO2) – A Multifunctional Oxide: A Review on the Prospect and Challenges of Hafnium Oxide in Resistive Switching and Ferroelectric Memories - Banerjee - 2022 - Small - Wiley Online Library.

Hafnium oxide nanoparticles: toward an in vitro predictive …

Preliminary results suggest a predictable in vitro biological effect of NBTXR3 nanoparticles exposed to ionizing radiation. BackgroundHafnium oxide, NBTXR3 nanoparticles were designed for high dose energy deposition within cancer cells when exposed to ionizing radiation. The purpose of this study was to assess the possibility of …

PD-L1 aptamer-functionalized degradable hafnium oxide …

PD-L1 aptamer-functionalized degradable hafnium oxide nanoparticles for near infrared-II diagnostic imaging and radiosensitization - PMC. Journal List. Front …

(PDF) Optical and X-ray attenuation properties of hafnium oxide

Optical and X-ray attenuation properties of hafnium oxide nanoparticle surface functionalized with fucoidan: toward early diagnosis of atherothrombotic disease ... contrast agents for diagnostic X ...

Manipulated hafnia paves the way for next-generation …

Scientists and engineers have been pushing for the past decade to leverage an elusive ferroelectric material called hafnium oxide, or hafnia, to usher in the next generation of computing memory. A ...

Hafnium(IV) oxide powder, 98 1

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others. Hafnium (IV) oxide powder, 98%; CAS Number: 1; EC Number: 235-013-2; find Sigma-Aldrich-202118 MSDS, related peer-reviewed papers, technical documents, …

Silicon nanowires with high-k hafnium oxide dielectrics for …

High-k dielectrics, such as hafnium oxide (HfO(2)), have the known ability to address these challenges by passivating the exposed surfaces against destabilizing concerns of ion transport. With these fundamental stability issues addressed, a promising target for POC diagnostics and SiNWFETs has been small oligonucleotides, more …

In Situ Gas Phase Diagnostics for Hafnium Oxide Atomic …

In situ monitoring of ALD processes has the potential to yield insights that will enable efficiencies in film growth, in the development of deposition recipes, …

Hafnia (HfO2) nanoparticles as an X-ray contrast agent and mid

The interaction of hafnium oxide (HfO2) nanoparticles (NPs) with X-ray and mid-infrared radiation was investigated to assess the potential as a multifunctional diagnostic probe for X-ray computed tomography (CT) and/or mid-infrared biosensing. HfO2 NPs of controlled size were prepared by a sol-gel process and surface …

Colloidal stability, cytotoxicity, and cellular uptake of HfO

The colloidal stability, cytotoxicity, and cellular uptake of hafnium oxide (HfO 2) nanoparticles (NPs) were investigated in vitro to assess safety and efficacy for use as a deliverable theranostic in nanomedicine.Monoclinic HfO 2 NPs, ~60-90 nm in diameter and ellipsoidal in shape, were directly prepared without calcination by a hydrothermal …

Electronic properties of hafnium oxide: A contribution from …

Experimental X-ray photoelectron spectra (XPS) of the Hf 4 f 7 / 2 – Hf 4 f 5 / 2 atomic level and the valence band of stoichiometric HfO 2 or non-stoichiometric hafnium oxide (HfO x) [57] are shown in Fig. 1.Violation of stoichiometry causes the formation of a low-energy shoulder at the Hf 4 f 7 / 2 – Hf 4 f 5 / 2 doublet due to metallic hafnium. A …

Crystals | Free Full-Text | Modeling and Simulation of Hafnium Oxide

The resistive memory has become one of the most promising new memory types because of its excellent performance, and HfO2 resistive material has attracted extensive attention. The conduction mechanism based on oxygen vacancy is widely recognized in the research of new nonvolatile memory. An RRAM electrothermal …

Role of oxygen vacancies in ferroelectric or resistive …

HfO2 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 as atomic layer deposition. Oxygen vacancy (Vo), which is the most …

In Situ Gas Phase Diagnostics for Hafnium Oxide Atomic

This report will describe the status of a project to develop in situ diagnostics for hafnium oxide ALD processes. The focus is on an examination of the utility of …

Fabrication characterization of hafnium oxide thin films

Hafnium oxide (Hafnai or HfO2)-based materials have become attractive candidates because they are a simple binary oxide (non-perovskite structure) but exhibit ferroelectric properties and do not pollute to the environment. Therefore, this work aims to fabricate HfO2 thin films by using a sol-gel method. The mole ratio of nitric acid (HNO3) …

PD-L1 aptamer-functionalized degradable hafnium oxide

PD-L1 aptamer-functionalized degradable hafnium oxide nanoparticles for near infrared-II diagnostic imaging and radiosensitization. Front Bioeng Biotechnol. …