Slashdot Mirror


Photonic Ink Changes Color On Command

An anonymous reader submits "According to Nature's report : "A new ink changes colour at the flick of a switch." It now named Photonic Ink, or P-Ink. "P-Ink's iridescent colours depend upon a process called diffraction." "To make the colour of the ink tunable" the team led by Geoffrey Ozin "packs a polymer gel between its stacked spheres" which can change size "when it is soaked in solvent and shrinks when it dries". In addition, it "conducts electricity", and "altering the voltage tunes the ink's colour smoothly through the spectrum." more detail also can found on Advanced Materials."

4 of 34 comments (clear)

  1. FUCK! by Anonymous Coward · · Score: -1, Offtopic

    FUCK FIRST POST! I didn't hit 20 seconds TWICE! I HATE SLASHDOT! NILES HATES SLASHDOT!

    I hate slashdot. Kill it now.

    1. Re:FUCK! by Anonymous Coward · · Score: -1, Offtopic

      well, damn. look at that. a "first post" anyway. Go me.

  2. *** IMPORTANT INFO by Anonymous Coward · · Score: -1, Offtopic

    RECTUM - With a dog in perfect health the anus should be small, close, firm
    and entirely retracted. Should the fundament protrude, or if it presents a
    sensible projection to the touch, the animal's digestion is not good. Should
    the orifice be enlarged the position is worse and it will not be long before
    cracks and ulcers may be detected upon the borders of the opening, these
    being at a later period constantly moistened by an unctuous fetid discharge.
    Should the lips of the orifice be gently pulled aside, the inward section of
    the membrane will show a bright scarlet colour, which is moistened with a
    watery fluid. During health the animal's bowels are never relaxed and the
    straining it employs to expel its faeces is sufficient to suggest the injury
    to which the rectum is exposed. If the body be delicate, bone and other hard
    substances pass through it without affecting the powers of assimilation;
    they become hard and sharp projections when surrounded by, and fixed in, a
    solid mass characteristic of the excrement of the dog. Hence a pointed piece
    of bone, projecting from a firm body, is liable to lacerate the tender and
    soft membrane over which it would have to be propelled. The anus of a dog is
    often as indicative of the general state of the dog's body as is the tongue
    with man.

  3. Re:Terrified... by Anonymous Coward · · Score: -1, Offtopic

    Where did you get that sig? From a crash bandicoot game?