Physics and people Ehsan Tanhaee's scientific contributions

Physics is all around us, even in things we use every day without realizing it. Here are some examples of everyday items where physics plays a role:

Clocks: Clocks rely on the physics of pendulums or oscillators to keep time accurately.

Mobile Phones: Physics principles are used in mobile phones for wireless communication and data transmission through  waves.

Eyeglasses: Optics is essential in designing eyeglasses to correct vision problems by manipulating light.

Refrigerators: The cooling process in refrigerators is based on the physics of thermodynamics and heat transfer.

Radios and TVs: These devices work by utilizing the physics of electromagnetic waves to transmit and receive signals for broadcasting.

GPS Navigation: The Global Positioning System (GPS) relies on the physics of satellite communication and precise timing.

Speakers and Headphones: Physics is involved in the conversion of electrical signals into sound waves that we hear through speakers and headphones.

Cameras: Cameras use optics and the physics of light to capture images by focusing light onto a sensor or film.

Musical Instruments: Musical instruments, such as guitars or pianos, rely on the physics of sound waves and vibrations to produce music.

Cars: Physics is involved in the design and operation of cars, including the mechanics of engines, the movement of vehicle bodies, and the physics of friction in tires.

These are just a few examples of how physics is present in everyday items and activities. Understanding the underlying physics can help us appreciate the science behind these objects and how they enhance our lives.

Ehsan Tanhaee: Polariton , physics ,Life,people,Nano

What are Polaritons?

Polaritons are special particles that are formed when light interacts with certain materials.

They are like a mix of light and matter, with properties of both.

Example of Polaritons in Daily Life: Smartphone Display

Have you ever wondered how the screen of your smartphone produces such vibrant and bright colors?

Well, one reason is the presence of polaritons in the display technology used.

How do Polaritons Work in Smartphone Displays?

Material Composition:

Smartphone screens use a special material called organic light-emitting diodes (OLEDs).

These OLEDs are made up of different layers of specific materials.

Light Generation:

When you turn on your smartphone, an electric current is passed through the OLED pixels.

This electric current causes the pixels to emit light.

Interaction with Light:

The light emitted by the OLED pixels interacts with the layers surrounding them.

These layers are designed to trap and enhance the light.

Formation of Polaritons:

When the trapped light interacts with the electrons in the OLED material, polaritons are formed.

Polaritons are special particles that have both properties of light and matter.

Better Display Performance:

The presence of polaritons helps improve the brightness and color accuracy of the smartphone display.

They make the colors on your screen appear more vibrant and lifelike.

Benefits of Polariton-based Displays:

Brighter and more vivid colors: Polaritons enhance the quality of the colors on your smartphone screen.

Energy efficiency: By using polaritons, smartphone displays can be more energy-efficient, which helps save battery life.

Thin and flexible design: Polariton-based OLED screens can be made thin, flexible, and lightweight, allowing for more versatile and durable smartphones.

Polaritons are special particles that form when light interacts with certain materials.

In your everyday life, polaritons play a role in the display technology of your smartphone, making the colors on your screen more vibrant and energy-efficient.