Presented by:
Dhwani
Varuna


Atomic force microscopy
 It is also known as scanning force microscopy.
 AFM is a very high resolution type of scanning probe microscopy , with resolution of order of a fraction of nanometer.
 AFM is one of the foremost tools for imaging , measuring and manipulating matter at the nanoscale.
Modes of AFM
There are three modes in which AFM can be operated depending on application:-
1. Static mode (contact).
2. Dynamic mode(non contact).
3. Tapping mode.
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The best optical microscopes can see structures in the 200 – 400 nm range, at their limits of resolution.
The STM can “see” structures on the order of 0.1 nm —another SPM, the AFM—can distinguish things on the order of 100 nm .
Optical microscopes are “diffraction limited”—the wavelength range of visible light (400-750 nm) sets the size of the smallest thing that can be imaged: ~ 400 nm.
Scanning Probe Microscopes don’t use visible light—they depend on measuring intermolecular ....etc

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SEM
Introduction
The optical microscope was invented in the early 17th century. Although this discovery that revolutionized science, these were the first microscopes little more than one type magnifying glasses. The centuries many scientists then looked for new versions of the microscope with an improved resolution. In the year 1900, the maximum resolution achievable with a light microscope reached: 2 micrometers.
This maximum resolution we can do as follows:
The wavelength is important for the resolution on ee optical system, es ....etc

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help me guyz to understand tool maker microscope ? ....etc

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need the information on topic, comparision of sed tv over others like lcd,crt,plasma tv etc, why sed tv is better than others, its future scope,also any further versions of sed tv.also an perfect ppt covering all the topics in an appropriate manner.
pls i hope u help me ....etc

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Microscope Light Dimmer for Biomedical Image Enhancement with Virtual Instrumentation


I. INTRODUCTION
Light dimming is based on adjusting the voltage
which gets to the lamp. Light dimming has been
possible for many decades by using adjustable power
resistors and adjustable transformers. The problem of
those light controlling methods have been that they
are big, expensive, have poor efficiency and they are
hard to control from remote location.


II. DESIG ....etc

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Single electron tunneling (SET) transistor

ABSTRACT
The chief problem that are faced by chip designers are regarding the size of the chip. According to Moores„¢s Law, the number of transistors on a chip will approximately double every 18 to 24 months. Moore\'s Law works largely through shrinking transistors-the circuits that carry electrical signals. By shrinking transistors, designers can squeeze more transistors into a chip. However, more transistors means more electricity and heat compressed into an even smaller space. F ....etc

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A Surface-conduction Electron-emitter Display (SED) is a flat panel display technology that uses surface conduction electron emitters for every individual display pixel. The surface conduction electron emitter emits electrons, that excite a phosphor coating on the display panel which is similar to the basic concept found in traditional cathode ray tube (CRT) televisions. This means that SEDs can combine the slim form factor of LCDs with the high contrast ratios and can also refresh rates making the picture quality of CRTs better .The researches ....etc

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Surface conduction Electron emitter Display


The SED technology has been developing since 1987. The flat panel display technology that employs surface conduction electron emitters for every individual display pixel can be referred to as the Surface-conduction Electron-emitter Display (SED). Though the technology differs, the basic theory that the emitted electrons can excite a phosphor coating on the display panel seems to be the bottom line for both the SED display technology and the traditional ....etc

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