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After running into many dead ends trying to create a projector-based compressive imaging NIR camera, we did some work with a stand-alone TI board, in a lab table setup. Before we began working on this project, a similar setup already existed, as shown in . Our lab table setup is very similar, with the exception that we have black cardboard barriers to shield the photodiode from the light source. Our photodiode, light source, and target object are also of course different from those shown in . , , and show what the new setup looks like.

Original lab-table setup

Original lab-table version of a compressive sensing camera .

Camera front end

Light source, target object, focusing lens, and DMD

Camera top view

TI 1100 Discovery Board and light source

Camera back end

Focusing lenses and photodiode

With this setup, we have direct control of the DMD mirrors; the TI 1100 Discovery Board has a high-speed interface that we can control using ALP (Application Programming Interface) software. To capture diode data, we use VILogger, then clean up the resulting stream in MATLAB. Thus, it seems probable that with such a setup, achieving a fast capture speed is within reach.

However, we continued to experience problems on the NIR lighting and sensing ends of the camera. The light bulb burnt most substances we tried to mount it on, and had to be positioned just right in order to reflect enough light off the target object. Further, the diode data showed a lot of noise when the signal was low, as can be seen in . Over a long capture period, we also often observed a drift in the base signal, as shown in .

Noisy diode data

Each set of pulses should be flat, as each is a set of the same random frame sent out repeatedly; the diode signal is clearly noisy

Drifing diode baseline

Over a capture period of several minutes, the base diode signal decreases significantly

Questions & Answers

What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Nir single pixel camera. OpenStax CNX. Apr 29, 2008 Download for free at http://cnx.org/content/col10525/1.1
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