DIY Scanning Electron Microscope - Tektronix contest entry--- make money online

guys Ben here with the DIY scanning

electron microscope project and this

video will be my official entry for the

my Tektronix oscilloscope contest so let

me move the camera in and show you what

I've got hooked up today okay so here's

my Tektronix 2246 analog oscilloscope

its operating in XY mode and the X

and/or the channel 1 & 2 x and y are

coming from this small signal generator

which is a raster scan generator so it's

moving the y-axis at about 60 Hertz and

the x-axis at about 15 kilohertz pretty

similar to TV scan rates and the signal

is split off from that function

generator and sent through this which is

an amplifier that runs the scan

circuitry for the electron microscope

and you should check out some of my

other videos concerning the microscope

for more details with that and the

z-axis of the oscilloscope which this is

has on the back of the device is

connected to this which is a simple

op-amp one op amp circuit that amplifies

the video signal from the microscope so

the brightness on the oscilloscope

screen is tied to the secondary

electrons signal from the microscope so

it's a pretty complicated project and

you can check out the other videos for

more details on the microscope this

video will just concentrate on the

oscilloscope connection so I'm going to

switch on the diffusion pump and fire up

the microscope and show you what the

image looks like on the Tektronix okay

the diffusion pump is running hopefully

you can hear me over the cooling fan

noise and the oscilloscope is generating

an image from the microscope so since

I'm using a glass bell jar I have to

have this light tight shield to keep

straight light away from the

photomultiplier tube so I'm going to dim

the room lights and zoom the camera in

on the oscilloscope display and then

describe what's going on okay so the

oscilloscope is displaying

a close-up of a semiconductor so what I

did is I removed the cover from a

standard silicon chip and what you're

looking at is the the bond pad and the

wire that connects the silicon die to

the rest of the chip body so these are

those little tiny wires that go from the

die to the ceramic in this case it was

actually a ceramic chip body now if I

move the scan pattern on the in the

microscope you can count a pan around

inside there so now we're looking more

at the silicon die and over here we're

looking more at the body of the chip and

in the other direction

and I can use the oscilloscope controls

to control the brightness of the image

and the X&Y; controls on the oscilloscope

are useful just for centering the image

just so it looks good on the screen

there like you said I was using the

z-axis input which on this scope ranges

from about 1.8 volts to 3.8 volts and

I've set up my little op amp circuit to

scale the output from the microscope to

be in that range I believe that the

image is still inverted with respect to

most scanning electron microscope images

in that the the lighter parts of this

image are actually receiving a lower

secondary electron signal let me see if

I can change the focus here a little bit

the microscope itself still needs quite

a bit of work and I had to play with the

scan rate so I don't think I'm operating

at 60 Hertz anymore

judging from the cameras well maybe it

is I don't know I had to tweak it a bit

somewhere on that order though it might

be a little bit lower I think it's

probably closer to 30 Hertz at this

point so the next steps for the electron

microscope project curve to obviously

increase the resolution and reduce

sources of noise and of course I'll be

doing more videos on that very soon

so thanks very much and vote for this

project if you think it was worthwhile

and I will see you next timeTop Paid Keyword :  earn cash online, google make money from home, earn money online without investment by clicking ads, free earn money website, online money making jobs, earn money online without investment by typing, online work for money, best online earning sites, make money online with google, online earning websites, money making websites, online earning websites for students, invest online and earn money, best online money making, online money income, view ads and earn money without investment, earn money online by clicking, online money income site, money earning sites, online earning sites, best website to earn money