Oxygen Annealing
Oxygen Annealing - Related Videos
06:44
Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing
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Cited by 1 •
2023
Oxide materials show many exotic properties that can be controlled by tuning the oxygen content. Here, we demonstrate the tuning of oxygen content in oxides by varying the pulsed laser deposition parameters and by performing postannealing. As an example, electronic properties of SrTiO3-based heterostructures are tuned by growth modifications and annealing.
02:30
Gradient Polymerase Chain Reaction to Determine the Optimum Annealing Temperature
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2025
This video demonstrates the gradient polymerase chain reaction for optimization of the annealing temperature of primers, which sets gradient annealing temperature along wells. The effect of different annealing temperatures is determined by the yield of amplified products that helps to optimize the reaction condition.
08:58
Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence
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Cited by 28 •
2011
We present an experimental procedure for measuring the partial pressure of oxygen (pO2) in cerebral vasculature based on oxygen-dependent quenching of phosphorescence. Animal preparation and imaging procedures were outlined for both large field of view CCD-based imaging of pO2 in rats and 2-photon excitation based imaging of pO2 in mice.
09:08
Detecting Reactive Oxygen Species
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2023
Reactive oxygen species are chemically active, oxygen-derived molecules capable of oxidizing other molecules. Because of their reactive nature, there are many deleterious effects associated with unchecked ROS production, including structural damage to DNA and other biological molecules. However, ROS can also be mediators of physiological signaling. There is accumulating evidence that ROS play significant roles in everything from activation of transcription factors to the mediation of...
08:59
Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays
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Cited by 11 •
2013
This article describes a simple method to fabricate vertically aligned carbon nanotube arrays by CVD and to subsequently tune their wetting properties by exposing them to vacuum annealing or dry oxidation treatment.
FAQs
Atomic diffusion lets atoms rearrange over distances that become accessible at elevated temperature. In an oxygen atmosphere, this movement can help oxygen reach vacancies or reactive surface sites. The resulting redistribution changes composition and local structure, which can alter crystallinity and functional properties. This mechanism explains why thermal treatment is more than simple heating.
Oxygen vacancies create deviations from an ideal composition, while oxidation states describe how elements are chemically balanced within a compound. Oxygen annealing can fill vacancies and adjust oxidation states, promoting more stable stoichiometry. These changes matter because they can reduce oxygen-related defects and modify electrical or catalytic behavior in the treated material.
Temperature, oxygen pressure, and treatment time jointly determine how far the material moves toward a new composition or structure. Temperature controls the rate of atomic diffusion, oxygen pressure influences the surrounding oxygen supply, and duration determines how long these changes can proceed. Adjusting these variables therefore helps tune crystallinity, defect levels, and chemical state.
Cooling preserves the composition and structure produced during the high-temperature stage. Once diffusion and oxygen reactions have modified the material, lowering the temperature helps retain that resulting arrangement rather than continuing the same thermally driven changes. The cooling stage is therefore part of controlling the final sample, not merely a pause after heating.
A basic workflow establishes the desired oxygen atmosphere, selects a treatment temperature and duration, heats the material under those conditions, and then cools it to preserve the modified state. The sample may be treated as a metal oxide, thin film, or ceramic compound. Consistent control of atmosphere and thermal history supports meaningful comparison between samples.
Chemists use oxygen annealing when a material needs improved crystallinity, fewer oxygen-related defects, or a more stable stoichiometric composition. It is relevant to preparing metal oxides, thin films, and ceramic compounds before characterization or device fabrication. The same treatment can also tune electrical or catalytic behavior, making it useful across chemistry and materials research.
Researchers can evaluate whether the treatment produced changes in crystallinity, oxygen-related defect levels, chemical composition, oxidation states, or stoichiometric stability. They may also examine resulting electrical or catalytic behavior. These outcomes connect the selected temperature, oxygen pressure, and treatment time with the material properties needed for characterization or later device fabrication.