Tether tech with energy conversion
October 6, 2011 at 9:02 pm #1653
Here is a direct energy conversion technique, that should also be usable for secure tethering, and lead to more justifiable interconnections between smaller Steads.
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ORNL discovers amazing electrical properties in polymers
OAK RIDGE, Tenn., Sep. 22, 2011 — Crystals and ceramics pale when compared to a material researchers at Oak Ridge National Laboratory discovered that has 10 times their piezoelectric effect, making it suitable for perhaps hundreds of everyday uses.
ORNL’s Volker Urban and colleagues at Technical University Aachen in Germany noticed the reverse piezoelectric effect – defined as creating a mechanical strain by applying an electrical voltage — while conducting fundamental research on polymers. At first they didn’t think about their observations in terms of classic piezoelectric materials, but then they became more curious.
“We thought about comparing the effects that we observed to more ‘classic’ piezoelectric materials and were surprised by how large the effects were by comparison,” said Urban, a member of the Department of Energy lab’s Neutron Scattering Science Division.
Until now, scientists did not believe that non-polar polymers were capable of exhibiting any piezoelectric effect, which occurs only in non-conductive materials. This research, however, shows up to 10 times the measured electro-active response as compared to the strongest known piezoelectric materials, typically crystals and ceramics.
“We observed this effect when two different polymer molecules like polystyrene and rubber are coupled as two blocks in a di-block copolymer,” Urban said.
Temperature-dependent studies of the molecular structure revealed an intricate balance of the repulsion between the unlike blocks and an elastic restoring force found in rubber. The electric field adds a third force that can shift the intricate balance, leading to the piezoelectric effect.
“The extraordinarily large response could revolutionize the field of electro-active devices,” said Urban, who listed a number of examples, including sensors, actuators, energy storage devices, power sources and biomedical devices. Urban also noted that additional potential uses are likely as word of this discovery gets out and additional research is performed.
“Ultimately, we’re not sure where this finding will take us, but at the very least it provides a fundamentally new perspective in polymer science,” Urban said.
The paper, titled “Piezoelectric Properties of Non-Polar Block Copolymers,” was published recently as the cover article in Advanced Materials. In addition to Urban, other authors are Markus Ruppel and Jimmy Mays of ORNL and Kristin Schmidt of the University of California at Santa Barbara. Authors from Aachen University are Christian Pester, Heiko Schoberth, Clemens Liedel, Patrick van Rijn, Kerstin Schindler, Stephanie Hiltl, Thomas Czubak and Alexander Böker.
Don’t have a scribed acct, cuz i use NoScript and can’t access anything on there – so here ya go.December 17, 2011 at 4:04 pm #16845
that there are no dumb questions but personally I’ve never believed that! So, here’s my dumb question:
You’ve got 5 12V batteries @ X many amps. You connect them in parallel so now you’ve got 12V @ 5x X many amps. As I understand it, 12V,24V or 48V is like the size of the ‘pipe’ the ‘water’ can come out of and the amps is the size of the ‘tank’ your ‘water’ is in. So, you hook up your 12V ‘thing’ to your batteries and it runs and will run a long, long time ’cause of all the amps you’ve got. Now, your ‘thing’ can only draw 12V because that’s all it has to draw from and it will only draw as many amps as it needs to draw reguardless of how many there are to draw from… So here’s the question: Why is it recomended that a fuse or circut breaker be added to the (+) line? I know it will work and work just fine the way it is ’cause I’m already doing it, but I’m also all about safety and following ‘rules’ and shit. Is this a ‘fix’ to a problem that doesn’t ‘really’ exist or is there a ‘real’ need to put a fuse or circut breaker in there and why?December 17, 2011 at 4:29 pm #16846
Amps isn’t the size of the tank. Amps is how much water is flowing through the pipe. The wider you open the faucet, the more amps.
The circuit breaker trips when there is too much flow. E.g. if the pipe breaks so all of the water is just gushing out, the circuit breaker cuts off the flow so that the room doesn’t flood.December 17, 2011 at 6:01 pm #16849
in addition to what Ken said, think about a pressure washer. volts are like the intensity of the flow, similar to the PSI of water coming thru a pressure washer nozzle.
it is true that a certain ‘thing’ will only use a given number of amps. the problem is when someone puts too many differet ‘things’ into the same circuit and draws more current than the wires and other components can safely handle (or they short out the circuit). that is what the circuit breaker (or fuse) guards against.
morganism – thats an amazing discovery. lets hope someone does make mooring cable with it!
Inventor of the “Bergstead”December 17, 2011 at 8:37 pm #16851
Ken and Shredder!December 26, 2011 at 10:35 pm #16928
Anyone think the “temperature dependent” line in here could mean that the differential expansion alone could generate juice? Would be sweet if you could get both a static temp and a force generated flow out of it. ?
Would be extra sweet in orbit. Just wrap a satellite, and the stuff would chase its tail around the body.
Take away the standing of corporations – http://movetoamend.org/get-involvedJanuary 1, 2012 at 2:09 pm #16942
Is this similar to the artificial muscle from “Artificial Muscle Inc” which uses two dielectric polymers to produce electricity when stretched?
I am very interested in getting electricity from a “rope” being pulled and released over and over…
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