HORTICULTURE SCIENCE
APPLICATION OF NANO TECHNOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A low thermal expansion leads to registration runout.
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Both the substrate (blank) and light barrier must be resistant to environmental chemical attack.
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Defect specifications are negotiated with the mask vendor.
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The intensity of the light exiting the mask should be nearly equal to the intensity of the light entering it.
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Detailed explanation-1: -The greater is the rise in temperature, the greater is the increase in length.
Detailed explanation-2: -Structural systems that experience large temperature changes are susceptible to extreme thermal stresses that activate failure by thermo-mechanical fatigue. To suppress such failures, the material should have a low thermal expansion coefficient, a, over a wide range of temperature.
Detailed explanation-3: -Low Thermal Expansion The coefficient ratio of thermal expansion indicates how much a material expands per 1℃ (2.2℉) rise in temperature. Fine Ceramics (also known as “advanced ceramics") have low coefficients of thermal expansion-less than half those of stainless steels.
Detailed explanation-4: -thermal expansion, the general increase in the volume of a material as its temperature is increased.