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microelectrofluidic module idea

Discussion in 'Electronic Design' started by Jamie M, Sep 30, 2012.

  1. Jamie M

    Jamie M Guest

    Hi,

    Here is my new crazy idea to combine single or double layer circuits's
    with microfluidics. It uses two small mirrors, or optionally one
    mirror and one pane of clear glass (for single sided circuits).

    First the microfluidic channels and connectors are milled (or CO2 laser
    cut etc) into one of the mirrors and then the circuit traces and pads
    are milled/engraved into the back of the mirror onto the silver layer
    (ie with eagle cad and pcbgcode and then the components are soldered on.

    There can be LED's, lasers, photodiodes etc mounted to view the
    microfluidic channels, also areas of the silver layer can be milled to
    create electrostatic or EM fields near the microfluidic channels.

    Once the two mirrors or mirror and glass are ready, they are placed
    glass on glass and permanently attached together, ie with a dilute
    solution of KOH as described by Phil Hobbs.

    For two layer circuits, vias through the two pieces of glass have to be
    milled or CO2 laser cut, and then jumper wires inserted to attach the
    two layers.

    Also just for making normal PCB's, small mirrors are maybe good, they
    are $1.25 at the dollar store for a 5" square one, and that is not much
    more than copper clad FR4 I guess, but the silver metal layer is very
    thin so only good for low current PCBs I guess.

    cheers,
    Jamie
     

  2. Odd. The surface quality of chip wafers are ground pretty flat and
    smooth before they start building chips.

    A place called Ball "Electronics" experiments (or actually makes) high
    end, hybrid circuits and chips on spherical shaped substrates.

    LCDs are circuits so thin we cannot see them until the liquid gets
    'oriented'.

    We should make circuits the size of the etchings we make on the aprons
    of diamonds to ID them by.

    I am sure that RFID technology should be what drives this.

    Won't be long, we'll all be getting wifi implants.
     
  3. Bill Sloman

    Bill Sloman Guest

    Back when I was graduate student in chemistry, I got exposed to the
    fluorine lab's safety kits, which were basically a bunch of big
    hypodermic syringes loaded with a calcium compound that could be
    injected under the skins to convert any fluoride present to extremely
    insoluble calcium fluoride.

    http://en.wikipedia.org/wiki/Calcium_fluoride

    The students and staff involved weren't supposed to self-administer,
    but to take the kit over to the university teaching hospital across
    the road and get the doctors there to do it.

    The kit included colour reprints of the relevant article in the
    Lancet, with gruesome images of what happened if the doctors were
    dilatory about making the injections; fluoride poisoning isn't all
    that common in the general population, and the doctors needed to be
    motivated to get on with the injections, whence the - then expensive -
    colour reprints.
     
  4. Jamie M

    Jamie M Guest

    Thanks for all the info, I don't think I am ever interested in using HF
    luckily!

    cheers,
    Jamie
     
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