25 Questions
What allows LCDs to be thinner, lighter, and use less power than older display technologies?
Liquid crystals and backlight control
What is the main advantage of LCDs over older display technologies like CRTs?
They are thinner, lighter, and use less power
How do LCDs create images?
By modifying the polarization of light using liquid crystals
What is the reversible transformation called when photochromic materials switch between two different forms upon absorbing light?
Photoisomerization
How do photochromic lenses in sunglasses work?
They contain chemicals that react to UV light, making the lenses darker
Apart from sunglasses, where else can photochromic materials be used?
In data storage like CDs or DVDs
When were QTC materials discovered?
1996
What is the primary limitation of QTC materials at present?
High cost
What phenomenon allows electrons to pass through an insulator when pressure is applied in Quantum Tunneling Composite (QTC) materials?
Quantum tunneling
In which field are QTC materials used to create touch-sensitive fabric panels in suits?
Touch technology
What is one of the applications of QTC materials in robotics?
Developing electronic 'skin' to detect touch and intensity
What is the main characteristic of Quantum Tunneling Composite (QTC) materials?
They use quantum tunneling to allow electrons to pass through an insulator when pressure is applied
Where are QTC materials used to improve technology?
Touch screens
What is the main limitation of the current use of QTC materials?
High cost
What is nitinol?
A mix of nickel and titanium
How are shape memory alloys used in dental wires for braces?
They maintain their shape even after stress has been applied and removed
In which industry can shape memory alloys be used to immediately shut down in the presence of increased heat?
Fire security and protection systems
What is a key advantage of thermo-ceramics compared to other materials?
Dimensional stability at high temperatures
How are thermo-ceramics manufactured?
Through a process called ceramic processing
What is the primary purpose of thermo-ceramics?
Withstanding high temperatures in various applications
What are some common examples of thermo-ceramic products?
Thermocouple protection tubes, furnace tubes, insulators
What is the primary characteristic of thermo-ceramics?
High temperature resistance
Which of the following is a common application of thermo-ceramic products?
Thermocouple protection tubes
Where can thermochromic materials be used to indicate temperature?
Baby bottles
What is the primary characteristic of thermochromic materials?
Ability to change color based on temperature
Test your knowledge about substances that can change color based on temperature fluctuations. Explore the various applications of thermochromic materials, from mood rings to baby bottles and kettles.
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