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High-Power Thermoelectric Generator Utilizes Thermal Difference of Only 5C (newelectronics.co.uk)
A silicon-nanowire thermoelectric generator has been developed by a team of researchers from Waseda University, Osaka University, and Shizuoka University. From a report: According to the Japanese researchers, this experimentally demonstrated a high-power density of 12 microwatts per 1cm2, enough to drive sensors or realise intermittent wireless communication, at a small thermal difference of only 5C. Silicon-based thermoelectric generators conventionally employed long, silicon nanowires of about 10-100nm, which were suspended on a cavity to cut off the bypass of the heat current and secure the temperature difference across the silicon nanowires. However, the cavity structure weakened the mechanical strength of the devices and increased the fabrication cost. The team says their generator has overcome this issue.
"Because our generator uses the same technology to manufacture semiconductor integrated circuits, its processing cost could be largely cut through mass production," says Professor Takanobu Watanabe of Waseda University. "Also, it could open up a pathway to various, autonomously-driven IoT devices utilising environmental and body heats. For instance, it may be possible to charge your smartwatch during your morning jog someday."
"Because our generator uses the same technology to manufacture semiconductor integrated circuits, its processing cost could be largely cut through mass production," says Professor Takanobu Watanabe of Waseda University. "Also, it could open up a pathway to various, autonomously-driven IoT devices utilising environmental and body heats. For instance, it may be possible to charge your smartwatch during your morning jog someday."
Being able to efficiently convert heat into energy is a holy grail. Are these TEGs better than previous tech when you have large differentials?
Unless my math is wrong, that's less than an eighth of a watt per square meter.
"I don't know, therefore Aliens" Wafflebox1
I just leave it at home on the charger.
This is a very useful signal detection implementation for low temperature gradients, useful in monitoring range fluctuations, and is obviously not useful for power generation beyond that needed to drive monitoring circuitry and software to communicate those gradient changes.
More like for nuclear power plants or battery cells with temperature operation limitations, or for use in industrial and commercial processes, where you need to run a resin at a specific temperature range to cure it before you apply it.
Kudos! Good job!
-- Tigger warning: This post may contain tiggers! --
"For instance, it may be possible to charge your smartwatch during your morning jog someday."
My automatic watch has been running without batteries for years, and all I have to do is wear it.
Millennial, please sell me again why I need this solution that lacks a problem...
You don't want Trump to die. You want Trump to live a long, healthy life, completely and totally discredited and disgraced, and never forgotten as the liar, cheat, and villian that he is. You want him to be a constant reminder to everyone of all the evil selfish destructive things he's done, and be punished for it until his last breath is drawn, and then only when he's died of purely natural causes and is put in the ground (face down, preferably), forever immortalized in the history books as the worst president the United States has ever had, an example to all future candidates of what not to be when you're sitting in the Oval Office, and a warning to future generations of the GOP.
Way less efficient than a low temperature differential Stirling, but plenty of room for improvement. It could also use the coldness of space as the heat sink using some new tech... can't find the link at the moment, but there was a TED talk on it.
If Trump dies, Pence gets in. His policy positions are almost identical, as both strictly follow the Republican platform. Pence would at least be more stable though, and less inclined to insult rivals and national leaders on twitter.
I have a solar powered Casio watch that does atomic clock synchronization every day. It's pretty cool in that it keeps very accurate time and has been running for years and years. All it needs is some ambient office lighting to keep it charged everyday. I've heard the rechargable lithium battery will eventually wear out however.
Somewhat amazingly, Trump Derangement Syndrome seems to be a real thing. Seeing these types of posts basically proves it.
You're completely and totally correct, and I agree with you 100%: Donald Trump is in fact deranged. There really needs to be psychological vetting of candidates for public office so we don't get crazies in positions of power.
Word has it actually that Pence is worse than Trump in significant ways since he's notably a Dominionist and would ruthlessly enforce Fundamentalist Christian agendas and not give a fuck about anyone else. Trump seems to want to drag us back socially to the 1940's; Pence would drag us all the way back to the pre-Renaissance era socially.
Yet that's somehow still preferable to a president who is just one snappy decision away from starting WW3.
I gotta go to bed.
"Nine times out of ten, starting a fire is not the best way to solve the problem." - my wife
see: https://hackaday.com/2018/07/0...
I expect to die chained to a wall in one of the secret dungeons at Mar-a-Lago, right between Bobby DeNiro and John Stewart.
Plus that Pence is a political insider and doesn't have any of the baggage that Trump carries with him. He knows how to talk politics with out antagonizing his rivals. He is true political animal unlike Trump is.
And that makes him 10 times more dangerous. All the mistakes we are seeing from Trump people with TDS want to attribute to Trump being mentally addled. Which isn't the case, they are simply the mistakes of a political novice. Pence will not make those mistakes.
Since Pence's policy positions are the same as the Republican party, he has a much greater chance to pull them off. To make it worse Pence thinks he on a mission from God to put women back in the kitchen and gays back in the closet.
Trump dying or being removed from office will be the worse thing that could happen.
I read at +2. If your post doesn't reach that level I will not see or respond to it.
Yet that's somehow still preferable to a president who is just one snappy decision away from starting WW3
Which won't happen. Contrary to popular myth there is no "Big Red" button that Trump can push to start WWIII. Outside of a retaliatory strike where nuclear weapons are first used against the US or her alias, the first use of nuclear weapons by the US government is a complex process that requires several levels of cooperation within the armed forces.
It was done this way to prevent just such a scenario as people with TDS like to envision about Trump rolling out of bed and pressing the "big red button."
I read at +2. If your post doesn't reach that level I will not see or respond to it.
He doesn't have to press a button. He is Commander in Chief. There are plenty of things he could do to start a war. It's easy for a small regional conflict to grow, pulling in allies on both sides. That's how WWI got started.
The North Korea powderkeg, for one. His attitude has been unstable - he used to deliberately antagonise the leadership with twitter barbs like 'little rocketman,' then he moved on to proclaiming himself a dealmaker and negotiating the very rough outline of an agreement. If tensions flare up a bit more once again he could easily order an attack, which would result in NK retaliating against SK, and China joining in to defend their own interests in keeping a big buffer area between them and any American allies and inevitable escalation.
Which probably won't happen. Unlike is predecessors, Trump has shown a reluctance to use military force as a first response. It is very doubtful that Trump would order any such attack against NK. More likely things would simply resort to the status quo.
I know the TDS infect media has so many people quaking in their boots about Trump starting WWIII but you should just ignore such scare tactics. We are doing just fine.
I read at +2. If your post doesn't reach that level I will not see or respond to it.
Since Pence's policy positions are the same as the Republican party, he has a much greater chance to pull them off.
Nonsense. Trump's policy positions are the same as the Republican party's wet dreams; you can tell this is true because they have consistently supported him. The reason Pence has a greater chance to pull off anything is that he seems more reasonable to many people than the commander of cheese. That means he'll be able to fool many moderates (aka fence-sitters) into believing that he is more reasonable than Trump.
"You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
He's the only President who casually makes nuclear threats against his enemies. (on twitter no less).
Which directly lead to NK coming to the negotiation table, which lead to a end of the Korean War, which lead to a path to disarming NK of its nuclear weapons. Not bad for a few tweets.
I read at +2. If your post doesn't reach that level I will not see or respond to it.
Which probably won't happen. Probably. Are you happy with a president so fickle that the best we can say is that he probably won't start a major war?