WHAT MADE SMARTPHONES TO BE THIS MUCH SMALL???

WHAT MADE SMARTPHONES TO BE THIS MUCH SMALL???

It is nothing but Capacitor. Because of Capacitor only we are using smart phones in compact size.
Researches in Germany who have succeeded in creating ultra small flexible super capacitors just a few nanometers in size.
A team in Linbiz Institute for solid state &material research, they just examine the use of manganese-Di-oxide as more Eco- friendly & less expensive alternative electrode material.
Usually manganese-Di-oxide is not used for electrode material because they are electrically conductive & not flexible too..
But the team overcome these disadvantage by vaporizing it using an electron beam & allowing them to precipitate in thin flexible films.
In order to increase conductivity gold is incorporated into it.

NEXT FOCUS: Gold metal has to be replaced because gold is expensive, so the capacitors costs high, hence we have to look up for a metal that can replace gold.

TOUCH SCREEN MONITORS

TOUCH SCREEN MONITORS

Many of us are using Touch Screen mobile phones.

Have you ever thought of what is inside it???

How it is working???

Whether it will sense any kind of material???

Here is the answer for such a kind of questions.....

Touch Screen Monitors are of three Basic types

                Resistive

                Capacitive

                Surface Acoustic Wave

RESISTIVE TOUCH

The resistive system consists of a glass panel with two layers.

One is Conductive layer and other is Resistive layer.

Conductive layer is the base layer above that resistive scratch layer is placed.

These two layers are separated by spacers (like a vacuum layer not exactly).

An electrical current runs through these two layers.

When a user touches the screen, the two layers make contact with each other and the electric current changes in that place.

The change in the electrical field is noted and the coordinates of the point of contact are calculated in order to know the exact location of the touch.

CAPACITIVE TOUCH

Before knowing about capacitive touch you should know what a capacitor is.

Capacitor is a storing device that stores electrical charge.

In the capacitive system, a layer that stores electrical charge is placed above the glass panel.

Because of the layer of electrical storage it is called capacitive touch.

When a user touches the screen, the charges in the capacitive layer decreased.

It is because our body is a conductor when we touch the screen small amount of charge get into our body.

 Hence the charge in the capacitive layer decreases.

By the decrease of charge we can know the exact location of touch.

SURFACE ACOUSTIC WAVE

On the glass panel of surface acoustic wave system, two transducers are placed.

Reflectors are also placed on the glass panel, they reflect electrical signal from one transducer to the other.

When a user touches the screen, the signal that is being reflected will be disturbed.

With the location of disturbance we can find the exact place of the touch.

WHICH IS BETTER???

When comparing all the three systems, surface acoustic wave is the best one.

Because it won’t absorb any light, so that 100 percent throughput is achieved.

It has perfect image clarity.

Capacitive touch has about 90 percent throughput whereas resistive touch has 75 percent.

And other important feature of capacitive touch is that it will work only if it is tochues by conductor.

All the other systems can be touched by any material.