Smart Materials Flashcards
What are smart materials?
Materials that can respond to changes in their environment.
True or False: Smart materials can change their properties in response to external stimuli.
True
Fill in the blank: Smart materials often respond to _____, temperature, or moisture.
light
What is a common example of a smart material?
Shape memory alloys
Which property allows shape memory alloys to return to a predetermined shape when heated?
Shape memory effect
True or False: Thermochromic materials change color in response to temperature changes.
True
What type of smart material is used in temperature-sensitive applications?
Thermochromic materials
Multiple Choice: Which of the following is NOT a type of smart material? A) Piezoelectric B) Thermochromic C) Ordinary steel
C) Ordinary steel
What do piezoelectric materials do when subjected to mechanical stress?
Generate an electric charge
Fill in the blank: _____ materials can absorb and release water, changing their properties.
Hygroscopic
True or False: Photochromic materials change color in response to light exposure.
True
What is the primary use of electrochromic materials?
To control light transmission and heat in windows.
What is the significance of self-healing materials?
They can repair themselves after damage.
Fill in the blank: A common application for _____ materials is in smart textiles.
responsive
Multiple Choice: Which smart material is commonly used in sensors? A) Shape memory alloys B) Conductive polymers C) Ordinary rubber
B) Conductive polymers
What property do magnetorheological fluids exhibit?
Change viscosity in response to a magnetic field.
True or False: Smart materials can only be used in high-tech applications.
False
What application do shape memory polymers have?
Used in medical devices and self-assembling structures.
Fill in the blank: _____ materials are often used in adaptive optics systems.
Electroactive
What is the function of a smart material in the context of responsive design?
To adapt to environmental changes for improved functionality.
Multiple Choice: Which of the following is a benefit of using smart materials? A) Inflexibility B) Increased weight C) Enhanced adaptability
C) Enhanced adaptability
True or False: Smart materials can help in energy efficiency.
True
What is a defining characteristic of conductive polymers?
They can conduct electricity while being flexible.
Fill in the blank: _____ materials can change properties based on humidity levels.
Hygroscopic
What is the role of nanomaterials in smart materials?
They enhance properties at a molecular level.
Multiple Choice: Which smart material is best known for its use in adaptive structures? A) Shape memory alloys B) Regular metals C) Wood
A) Shape memory alloys
