The ability to tailor the chemical composition and structure of a
surface on the 1–100 nm length scale is important to researchers
studying topics ranging from electronic conduction, to catalysis, to
biological recognition in nanoscale systems.
While microfabrication techniques such as photolithography, microcontact
printing, micromachining, and microwriting can pro
of surface is observed.
O2 content of working gas increased,
created bigger grains
transmittance increased
band gap energy increased
refractive index decreased
had more semiconductor behavior
We can conclude ZnO thin films produced by RF sputtering will have new advantage for industrial applications
It can be considered that physical properties such as optical, electrical and morpho
process because it is air occlusion pump. It's also clean because of no use of oil
Application.
High vacuum pump is used for many parts like processofsemiconductor, IC, nuclear fusion reactor and etcetera. Recently, high vacuum is especially used in aerospace industry andprocessof solar cell.[1]
Ultra High Vacuum
Definition.
Ultra high vacuum region is defined as the pressure lower
Let’s start from the transistor. How many of you know about the transistor?
Basically, the transistor can be categorized in two parts, which are BJT and FET
In easy words, BJT uses current to make the transistor work, and FET uses Voltage.
A bipolar transistor has terminals labeled base, collector, and emitter. A small current at the base terminal, which is flowing t
Property of LED
High efficiency for converting electron to photon (Low power consumption, 1/8 of light bulb, ½ of Fluorescent lamp)
Tiny light sources→Miniaturization, Weight lightening
Semipermanent life span
Fast reaction rate for change
Excellent durability and Eco-friendly
Produce RGB full color as blue LED commercialized
Various application
Although focus on specific band, gen