Book Report # 52 : Customed Tuned Materials.
Begin: 1/8/2025
Finish: 2/6/2025
Title: Customed Tuned Materials
Author: Xin-Zhang
Why I choose to read this book:
This book is about microelectromechanical systems (MEMS) and Metamaterial that are engineered material to create devices that can replicate the task of MEMS. This is science at the micrometer and nanometer level. Metamaterial can be engineered to solve our every day problems.
What I learned from this book:
What are Microelectromechanical Systems (MEMS). MEMS are a set of sensors, actuators, and detectors. Cars and phones have tons of MEMS that are part of the structure of those devices, such as pressure sensors, gyroscopes, infrared detectors and many others. When you rotate your phone and it immediately adjusts, that is a sensor at work inside. MEMS detect collisions and direct airbags to inflate. In ink-jet printers, MEMS pump ink and deposit it onto paper. When you drive a car in the dark, you might have infrared sensors to see a deer by the road. The size of MEMS at the micro level in the body for biomedical microdevices, biosensors, and laboratory-on-chip applications and other applications. You can also have actuators, motors, generators or rockets. You can have a rotor of a few millimeters in diameter, capable of spinning up to millions of revolutions per minute, suitable for micro or Nano-robots and other dynamic systems.
How To Create Metamaterial:
Metamaterial are mathematically designed artificial material to create devices that can reduce noise without blocking airflow or heat, or can improve signals in medical imaging. We can customize the electromagnetic, mechanical and acoustic properties by designing and manufacturing things through technology such as 3D printing.
How can Metamaterials Be Used to Control Noise:
Usually, noise is controlled by covering it, like the thick barriers on highways. How can we reduce noise and also have transparency and openness or datacenter, we can allow airflow with reasonable noise reduction. The solution was a mathematically design structure with six embedded channels that manipulate acoustic waves. What goes through the ring will have a phase change of 90 degrees and it will cancel out on the other side. It is not being absorbed or covered, it is being cancelled.
Time Frame for Using Metamaterials to Cancel Noise:
We see a lot of applications for acoustic metamaterials, not just for sound silencing but also sound manipulation. Sound manipulation and wave propagation are going to be very popular. These applications are already being deployed and will continue to grow.
Do Metamaterials Have any Limits on Size Or Shape:
The metamaterials is not shape-limited or is not material-specific; they can be free form and flexible. You can use any special material through 3D printing or other manufacturing techniques. Metamaterials are made of unit cells that can be any shape, depending on the application, you can make an array of them to make large structure.
Other Applications for Metamaterials:
Magnetic Resonance Imaging (MRI) the most important thing is a good signal-to-noise ratio, which allows them to decrease the time it takes to scam each patient. The structure of the material is mathematically designed to optimize wave manipulation, that enhancement will give a better signal-to-noise ratio. It could also use ultra-low field MRI, which is portable in the field and less expensive for developing countries.
How can Metamaterial Improve Other Types of Imaging:
MEMS-based detectors can sense infrared for seeing in the dark or in low visibility conditions. We can use metamaterial thermal imaging to see anything you want at a certain frequency, such as safety scan or in a fire.
Other Applications:
Practical applications to improve quality of life and have social benefits. We can improve the performance of MRI, Develop low cost, and field MRI in the near future.
How will this book contribute to my success upon release:
This scientific book about MEMS and Metamaterials has opened my outlook, increased my knowledge, improved my analytical and critical thinking skills. This knowledge will be shared with other communities which I hope to volunteer my services.
