you'd need an awefully large piezo sheet/drumskin to resonate at 8Hz, and i'm guessing the energy of that ambient infrasound rumble you try to tap into is so low that in most settings you'd be a lot better off by just using a solar panel of the same size.
brian carroll
okay, so the big surprise for me was that this piezo film technology lines up directly with an energy harvesting article from a recent (urls) list. excerpted again below: ---------------------------------------------------------------------------
// contact electrification using patterned nanomaterials... // note: the gap, equilbrium via chargeflow, as if via entropy. // discovery originating from malfunctioning piezo-sensor...
Capturing wasted electricity with triboelectric generators http://phys.org/news/2013-12-capturing-electricity-triboelectric.html
[quote] "Beyond generating power, the technology could also provide a new type of self-powered sensor, allowing detection of vibrations, motion, water leaks, explosions – or even rain falling." ... "They have learned to increase the {power output density by a factor of 100,000} by applying micron-scale patterns to the polymer sheets. The patterning effectively increases the contact area and thereby increases the effectiveness of the charge transfer." [unquote]
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from what i have read about PVDF, it would seem possible that a similar nanopatterning could be etched onto the piezo film surface that is bending or strained, and via this more intense grid or array it may be possible to likewise up the capacitance or charge that can be held and stored within piezo film, (patterns like a step-up-transformer perhaps), based on the above, if indeed a non-piezo film investigation.
the characteristics appear identical: LEDs need enough voltage to light, and a constant current to maintain lit, and thus the high voltage of material difference or 'gap' in the original news story (linked above) indicates that a high voltage is _momentarily transferred that is enough to light up an array of LEDs, though only for an instant. and this becomes an application for energy harvesting.
so it should be notable if the PVDF film also shares these properties, that it generates a high voltage that can be sent into a circuit, though likewise it is a momentary not constant charge and thus particular circuits would need to be designed to allow it to function as a source of energy for a self-sustaining circuit (energy harvesting) rather than just pushing out current, unless somehow it was possible to get it moving in that way...
i.e. constant vibration -> high voltage -> constant AC current
(these observations from someone who knows nothing about these things, beyond trying to understand the fundamentals of basic electronics components and their functioning. yet enough to ask questions and make a few assumptions...)
so it appears to be an issue of a trickle-charge circuit, that the PVDF film would vibrate and offload that current into a another capacitor where it could be stored until a usable amount and then accessed for low-power functionality of some super-efficient circuit design, PVDF the powersource.
so for this trickle charge circuit, it is imagined:
PVDF film --> diode --> supercapacitor --> "circuit"
whereby 'vibrational energy' is powering the overall circuit, which in crypto or security terms could be sensing-related or monitoring or sniffing data via low-power and stealth, etc. or perhaps even transmitting information or code or relaying or capturing infrasound data, where vibration both provides power to the circuit and information (high metaphysics)
from what i have read, the current is AC from the piezo film, and then another capacitor would turn it into DC if this is not mistaken, for use in such a circuit- this only an approximation of what the most basic issues might involve, if also incorrect though i figure many here have the information and knowledge to resolve such issues if inquiring further, thus; 'about ideas'
so at this stage, as with everything: things start to get weird...
perhaps it is because of my lack of knowledge or involves some basic misunderstanding that i am simply incapable of realizing; though this little electronic component is essentially some kind of strange antenna device, and if it can be made to vibrate then it generates power; so if it constantly vibrates, it constantly is able to generate current and thus replaces a battery in a circuit
so to get usable current, the key is to either trickle charge and build up and store energy over time, to a point that it can be used at normal levels, or to generate a frenzy of energy via constant activity that strains the PVDF film, creating a flow of alternating current that can be immediately turned to DC as powersource, and thus 'live power' vs. a delayed approach
(maybe oversimplifying or confusing the electronics issues or paradigms involved, though this is how i am relating to it)
why does it matter?
well, from what i understand after listening to my friend who is a composer, making a film on a Nikola Tesla, whose studies and research focuses on 'music as an energy system', [0] [1] also in relation to my own investigations of logic (A=A) as this relates to her study of tuning systems and "resonance-based energy transfer" (somewhat in the range of wireless power, yet non-electromagnetic, involving vibrations, not moving of charge)-
if there were a vibration that existed that could be tapped into by this PVDF piezo film -as antenna- and it could be made to vibrate constantly, then *bingo* -- it is access to free-energy
and i am only thinking these specific thoughts because of hh, and would be nowhere in this vicinity with my own investigations which tend more towards the HIOX model though interest of this realm of electronics is extreme at the same time as my illiteracy and incapacity, thus words must substitute for actual experiment.
and so piecing it together- under such guidance, it is verified by others who are expert that this constant vibration exists within the environment already, today, now, and for billions of years presumably. it was investigated by Nikola Tesla, where the area between the ground of earth and the dome of sky in its upper atmosphere create a waveguide or sorts, known as the "Earth-ionosphere cavity" [2], which in turn generates a vibrational frequency known as the Schumann Resonance [3] that provides a source of constant vibration at 7.83 Hz resulting from lightning strikes in the atmosphere which then creates this giant battery in the sky, that in turn could be tapped into, both in non-electromagnetic terms, via vibration, and likely as with lightning, electromagnetic terms, as a source of power.
so it cannot be this easy, right. gotta be missing something. and if i could design the circuit and figure it, i would know, and yet i cannot and so share my puzzlement, inquiring: why not? what am i missing, what do i fail to understand of the situation?
in other words, if you can get the PVDF film vibrating by tuning into the 7.83 Hz frequency of the Schumann Resonance, you would have access a local instance of perpetual motion, as long as the dynamics retain the existing characteristics, indefinitely
continued...
0. helen hall - composer, filmmaker http://www.helenhall.net
1. Pictures of Infinity -- film about Tesla & aether http://picturesofinfinity.net/
2. Earth-ionosphere cavity (diagrams) http://www.glcoherence.org/templates/gcp/images/monitoring_system/earth_rhyt... http://www.vlf.it/Schumann/cavity.gif
3. Schumann resonances http://en.wikipedia.org/wiki/Schumann_resonances
oratorio, amaryllis, Teller
-- Sent from my Android device with K-9 Mail. Please excuse my brevity.