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Silicon's surface has a high affinity for oxygen and thus an oxide layer rapidly forms upon exposure to the atmosphere. The chemical reactions which describe this formation are:
(1)
(2)
In the first reaction a dry process is utilized involving oxygen gas as the oxygen source and the second reaction describes a wet process which uses steam. The dry process provides a "good" silicon dioxide but is slow and mostly used at the beginning of processing. The wet procedure is problematic in that the purity of the water used cannot be guaranteed to a suitable degree. This problem can be easily solved using a pyrogenic technique which combines hydrogen and oxygen gases to form water vapor of very high purity. Maintaining reagents of high quality is essential to the manufacturing of integrated circuits, and is a concern which plagues each step of this process.
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What is the difference between a wet sieve and a dry sieve analysis?
A wet sieve analysis involves using water to wash finer particles through the sieve, while a dry sieve analysis does not involve any added moisture and relies on natural particle movement through the sieve openings. Wet sieve analysis is typically used for cohesive materials, while dry sieve analysis is more commonly used for non-cohesive materials.
What is dry oxidation?
Dry oxidation is a process where a material is oxidized in the presence of oxygen without the addition of any liquid or solvent. It typically involves exposing the material to high temperatures in the presence of oxygen gas to induce oxidation reactions. This process is commonly used in the semiconductor industry for growing oxide layers on silicon wafers.
What are the differences between the wet and dry processes in the cement production process?
In the wet process, raw materials are mixed with water to form a slurry before being fed into the kiln, while in the dry process, raw materials are dried, ground, and fed into the kiln in a powder form. The wet process is energy-intensive and produces more pollutants, while the dry process is more energy-efficient and environmentally friendly.
What is the difference in dry bottle to wet bottle?
A dry bottle refers to an empty bottle without any liquid inside, while a wet bottle contains liquid. Dry bottles are typically used for storage or transportation, while wet bottles are ready to be consumed.
What is the difference between a lead acid wet battery and a lead acid dry battery?
one is dry one is wet... wet once are used for car batteries and dry lead acid batteries the once you put in your remote lets say. I think the dry lead acid battery is maintenance-free and sealed batteries, and the wet batteries is the traditional batteries which needs more maintenance.
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What a difference between dry and wet oxidation?
Dry oxidation has a lower growth rate than wet oxidation although the oxide film quality is better than the wet oxide film. Therefore thin oxides such as screen oxide, pad oxide, and especially gate oxide normally use the dry oxidation process. Dry oxidation also results in a higher density oxide than that achieved by wet oxide and so it has a higher breakdown voltageIn case of wet oxidation where water is use instead of oxygen, the water molecule can dissociate at high temperatures to form hydroxide OH that can diffuse in the silicon faster than molecular O2. Therefore the wet oxidation process has a significantly higher oxidation rate than the dry oxidation. It is used to grow thick oxides such as masking oxide, blanket field oxide, and the LOCOS oxide.
What is the difference between wet and dry sieve analysis?
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A dry lab is a sad lab, and a wet lab is a happy lab?
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Dry corn is dry and soaked corn is wet.
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What is the difference between dry and wet?
Dry: Free from moisture or liquid; not wet or moist. Wet: Covered or saturated with water or another liquid. Hope this helped*
