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LeopoldS

Cold storage - an Arctic solution to the data storage cooling problem | In-depth | The ... - 0 views

www.theengineer.co.uk/...1011201.article

IT

shared by LeopoldS on 19 Dec 11 - No Cached
  • LeopoldS on 19 Dec 11
     
    from Andrés (don't ask my why he is not putting it directly on diigo ....) quite an old issue, though still of high actuality ... and a nice summary in my view ...
LeopoldS

Graphite + water = the future of energy storage - Monash University - 6 views

www.monash.edu.au/...r-the-future-of-energy-storage

energy NRG storage graphene

shared by LeopoldS on 07 Nov 11 - No Cached
LeopoldS liked it
  • LeopoldS on 07 Nov 11
     
    any idea how this works - who wants to have a closer look at it?
  • ...3 more comments...
  • dejanpetkow on 08 Nov 11
     
    Water is used for keeping the graphene stacks separate. Without water or some other separation method the different graphene stacks would just stick together and graphene would lose its nice properties (like a huge surface). So, water has nothing to do with energy but is just the material which keeps the graphene stacks at distance. The result is a gel. Still, energy needs to be stored in the gel.
  • LeopoldS on 09 Nov 11
     
    and the different graphene layers act as anodes and cathodes??
  • dejanpetkow on 09 Nov 11
     
    Layer orientation in a gel is random. Additionally to that, cathodes and anodes are about charge seperation. Graphene layers are (as far as I understand) supposed to provide huge surfaces to which something, maybe a charge, can be attached. So do we need ions and electrons? Probably not. Probably just electrons which can travel easily through the gel. I guess the whole gel (and all layers inside) would be nagtively charged, making the gel blob a fluid cathode. But again, it's just a guess.
  • LeopoldS on 10 Nov 11
     
    Wouldn't it be worth having a closer look?
  • LeopoldS on 12 Nov 11
     
    it's still not clear to me how to get electricity in and out of this thing?
jcunha

'Superman memory crystal' that could store 360TB of data forever | ExtremeTech - 0 views

www.extremetech.com/...that-could-store-360tb-of-data

technology 5D PHY memory TB

shared by jcunha on 22 Feb 16 - No Cached
  • jcunha on 22 Feb 16
     
    A new so called 5D data storage that could potentially survive for billions of years. The research consists of nanostructured glass that can record digital data in five dimensions using femtosecond laser writing.
  • ...2 more comments...
  • jcunha on 22 Feb 16
     
    Very scarce scientific info available.. I'm very curious to see a bit more in future. From https://spie.org/PWL/conferencedetails/laser-micro-nanoprocessing I made a back of envelop calc: for 20 nm spaced, each laser spot in 5D encryption encodes 3 bits (it seemed to me) written in 3 planes, to obtain the claimed 360TB disk one needs very roughly 6000mm2, which does not complain with the dimensions shown in video. Only with larger number of planes (order of magnitude higher) it could be.. Also, at current commercial trends NAND Flash and HDD allow for 1000 Gb/in2. This means a 360 TB could hypothetically fit in 1800mm2.
  • Alexander Wittig on 22 Feb 16
     
    I had the same issue with the numbers when I saw the announcement a few days back (https://www.southampton.ac.uk/news/2016/02/5d-data-storage-update.page). It doesn't seem to add up. Plus, the examples they show are super low amounts of data (the bible probably fits on a few 1.44 MB floppy disk). As for the comparison with NAND and HDD, I think the main argument for their crystal is that it is supposedly more durable. HDDs are chronically bad at long term storage, and also NAND as far as I know needs to be refreshed frequently.
  • jcunha on 23 Feb 16
     
    Yes Alex, indeed, the durability is the point I think they highlight and focus on (besides the fact the abstract says something as the extrapolated decay time being comparable to the age of the Universe..). Indeed memories face problems with retention time. Most of the disks retain the information up to 10 years. When enterprises want to store data for longer times than this they use... yeah, magnetic tapes :-). Check a interesting article about magnetic tape market revival here http://www.information-age.com/technology/data-centre-and-it-infrastructure/123458854/rise-fall-and-re-rise-magnetic-tape I compared for fun, to have one idea of what we were talking about. I am also very curious so see the writing and reading times in this new memory :)
  • joergmueller on 23 Feb 16
     
    But how can glass store the information so long? Glass is not even solid?!
Thijs Versloot

Hydrogen storage in Graphene Origami nanoboxes - 2 views

pubs.acs.org/...nn500025t

hydrogen storage nanotechnology

shared by Thijs Versloot on 19 Mar 14 - No Cached
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  • Thijs Versloot on 19 Mar 14
     
    A total storage of 9.5 wt% H2 could be reached which is above the 7.5wt% set by the DoE for market requirements of hydrogen vehicles. The nanoboxes can be opened and closed using electric fields.
santecarloni

Hydrogel electronics makes its debut - physicsworld.com - 0 views

physicsworld.com/...el-electronics-makes-its-debut

electronics technology

shared by santecarloni on 29 Jun 12 - No Cached
  • santecarloni on 29 Jun 12
     
    A new type of hydrogel could make for high-performance energy-storage electrodes and biosensors.
Isabelle Dicaire

Laser and optical glass can store data for millions of years - 1 views

www.spacedaily.com/...for_millions_of_years_999.html

shared by Isabelle Dicaire on 11 Jul 13 - No Cached
  • Isabelle Dicaire on 11 Jul 13
     
    Scientists have fabricated a portable data storage system based on nanostructured glass that seems to be much more stable than current disks. I wonder if it can survive that long in space?
Thijs Versloot

Light brought to a complete stop - 3 views

www.natureworldnews.com/...t-complete-stop-one-minute.htm

science light

shared by Thijs Versloot on 29 Jul 13 - No Cached
  • Thijs Versloot on 29 Jul 13
     
    "When a control laser is fired at the crystal, a complex quantum-level reaction turns it the opaque crystal transparent. A second light source is beamed into the crystal before the control laser is shut off, returning the crystal to its opaque state. This leaves the light trapped inside the crystal, and the opacity of the crystal keeps the light trapped inside from bouncing around, effectively bringing light to a full stop." is the simple explanation, but I am not sure how this is actually possible with the current laws of physics
  • Isabelle Dicaire on 05 Aug 13
     
    There are two ways to make slow light: material slow light and structural slow light, where you either change the material or the structural properties of your system. Here they used EIT to make material slow light, by inducing transparency inside an otherwise opaque material. As you change the absorption properties of a material you also change its dispersion properties, the so-called Kramers-Kronig relations. A rapid positive change in the dispersion properties of a material will give rise to slow light. To effectively stop light they switched off the control beam, bringing back the opaque state. Another control beam is then used to retrieve the probe pulse that was 'frozen' inside the medium. Light will be halted according to the population lifetime on the energy level (~ 100s). They used an evolutionary algorithm to find an optimal pulse preparation sequence to reach close to the maximum possible storage duration of 100s. Interesting paper!
  • Thijs Versloot on 06 Aug 13
     
    So it is not real storage then in a sense, as you are stimulating an excitation population which retains the phase information of your original pulse? Still it is amazing that they could store this up to 100s and retrieve it with a probe pulse, but light has never been halted.
Thijs Versloot

Graphene coated silicon super-capacitors for energy storage - 1 views

news.vanderbilt.edu/...vice-electricity-silicon-chips

technology supercapacitor

shared by Thijs Versloot on 25 Oct 13 - No Cached
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  • Thijs Versloot on 25 Oct 13
     
    Recharge in seconds and efficiently store power for weeks between charges. Added bonus is the cheap and abundant components needed. One of the applications they foresee is to attach such a super-capacitor to the back of solar panels to store the power and discharge this during the night
  • LeopoldS on 27 Oct 13
     
    very nice indeed - is this already at a stage where we should have a closer look at it? what you think? With experience in growing carbon nanostructures, Pint's group decided to try to coat the porous silicon surface with carbon. "We had no idea what would happen," said Pint. "Typically, researchers grow graphene from silicon-carbide materials at temperatures in excess of 1400 degrees Celsius. But at lower temperatures - 600 to 700 degrees Celsius - we certainly didn't expect graphene-like material growth." When the researchers pulled the porous silicon out of the furnace, they found that it had turned from orange to purple or black. When they inspected it under a powerful scanning electron microscope they found that it looked nearly identical to the original material but it was coated by a layer of graphene a few nanometers thick. When the researchers tested the coated material they found that it had chemically stabilized the silicon surface. When they used it to make supercapacitors, they found that the graphene coating improved energy densities by over two orders of magnitude compared to those made from uncoated porous silicon and significantly better than commercial supercapacitors. Transmission electron microscope image of the surface of porous silicon coated with graphene. The coating consists of a thin layer of 5-10 layers of graphene which filled pores with diameters less than 2-3 nanometers and so did not alter the nanoscale architecture of the underlying silicon. (Cary Pint / Vanderbilt) The graphene layer acts as an atomically thin protective coating. Pint and his group argue that this approach isn't limited to graphene. "The ability to engineer surfaces with atomically thin layers of materials combined with the control achieved in designing porous materials opens opportunities for a number of different applications beyond energy storage," he said.
Luís F. Simões

Shell energy scenarios to 2050 - 6 views

www.shell.com/...shell_energy_scenarios_2050

energy future forecast politics economy climate_change

shared by Luís F. Simões on 09 Mar 11 - No Cached
  • Luís F. Simões on 09 Mar 11
     
    just in case you were feeling happy and optimistic
  • ...7 more comments...
  • Francesco Biscani on 09 Mar 11
     
    An energy scenario published by an oil company? Allow me to be sceptical...
  • Joris _ on 10 Mar 11
     
    Indeed, Shell is an energy company, not just oil, for some time now ... The two scenarii are, in their approach, dependant of economic and political situation, which is right now impossible to forecast. Reference to Kyoto is surprising, almost out-dated! But overall, I find it rather optimistic at some stages, and probably the timeline (p37-39) is unlikely with recent events.
  • Luís F. Simões on 10 Mar 11
     
    the report was published in 2008, which explains the reference to Kyoto, as the follow-up to it was much more uncertain at that point. The Blueprint scenario is indeed optimistic, but also quite unlikely I'd say. I don't see humanity suddenly becoming so wise and coordinated. Sadly, I see something closer to the Scramble scenario as much more likely to occur.
  • LeopoldS on 12 Mar 11
     
    not an oil company??? please have a look at the percentage of their revenues coming from oil and gas and then compare this with all their other energy activities together and you will see very quickly that it is only window dressing ... they are an oil and gas company ... and nothing more
  • Joris _ on 14 Mar 11
     
    not JUST oil. From a description: "Shell is a global group of energy and petrochemical companies." Of course revenues coming from oil are the biggest, the investment turnover on other energy sources is small for now. Knowing that most of their revenues is from an expendable source, to guarantee their future, they invest elsewhere. They have invested >1b$ in renewable energy, including biofuels. They had the largest wind power business among so-called "oil" companies. Oil only defines what they do "best". As a comparison, some time ago, Apple were selling only computers and now they sell phones. But I would not say Apple is just a phone company.
  • LeopoldS on 14 Mar 11
     
    window dressing only ... e.g. Net cash from operating activities (pre-tax) in 2008: 70 Billion$ net income in 2008: 26 Billion revenues in 2008: 88 Billion Their investments and revenues in renewables don't even show up in their annual financial reports since probably they are under the heading of "marketing" which is already 1.7 Billion $ ... this is what they report on their investments: Capital investment, portfolio actions and business development Capital investment in 2009 was $24 billion. This represents a 26% decrease from 2008, which included over $8 billion in acquisitions, primarily relating to Duvernay Oil Corp. Capital investment included exploration expenditure of $4.5 billion (2008: $11.0 billion). In Abu Dhabi, Shell signed an agreement with Abu Dhabi National Oil Company to extend the GASCO joint venture for a further 20 years. In Australia, Shell and its partners took the final investment decision (FID) for the Gorgon LNG project (Shell share 25%). Gorgon will supply global gas markets to at least 2050, with a capacity of 15 million tonnes (100% basis) of LNG per year and a major carbon capture and storage scheme. Shell has announced a front-end engineering and design study for a floating LNG (FLNG) project, with the potential to deploy these facilities at the Prelude offshore gas discovery in Australia (Shell share 100%). In Australia, Shell confirmed that it has accepted Woodside Petroleum Ltd.'s entitlement offer of new shares at a total cost of $0.8 billion, maintaining its 34.27% share in the company; $0.4 billion was paid in 2009 with the remainder paid in 2010. In Bolivia and Brazil, Shell sold its share in a gas pipeline and in a thermoelectric power plant and its related assets for a total of around $100 million. In Canada, the Government of Alberta and the national government jointly announced their intent to contribute $0.8 billion of funding towards the Quest carbon capture and sequestration project. Quest, which is at the f
  • Joris _ on 14 Mar 11
     
    thanks for the info :) They still have their 50% share in the wind farm in Noordzee (you can see it from ESTEC on a clear day). Look for Shell International Renewables, other subsidiaries and joint-ventures. I guess, the report is about the oil branch. http://sustainabilityreport.shell.com/2009/servicepages/downloads/files/all_shell_sr09.pdf http://www.noordzeewind.nl/
  • LeopoldS on 16 Mar 11
     
    no - its about Shell globally - all Shell .. these participations are just peanuts please read the intro of the CEO in the pdf you linked to: he does not even mention renewables! their entire sustainability strategy is about oil and gas - just making it (look) nicer and environmentally friendlier
  • Joris _ on 16 Mar 11
     
    Fair enough, for me even peanuts are worthy and I am not able to judge. Not all big-profit companies, like Shell, are evil :( Look in the pdf what is in the upstream and downstream you mentionned above. Non-shell sources for examples and more objectivity: http://www.nuon.com/company/Innovative-projects/noordzeewind.jsp http://www.e-energymarket.com/news/single-news/article/ferrari-tops-bahrain-gp-using-shell-biofuel.html thanks.
Nicholas Lan

hydrogen storage using chicken feathers - 1 views

acs.confex.com/...Paper69389.html

BIO technology chemical engineering CNT hydrogen storage NRG science

shared by Nicholas Lan on 25 Nov 09 - Cached
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  • Nicholas Lan on 25 Nov 09
     
    apparently competitive with CNT and others in performance, while as you would expect very cheap. anyone know what happens to chicken feathers in a vacuum?
Alexander Wittig

Storing energy at sea - 2 views

forschung-energiespeicher.info/...Kugelpumpspeicher_unter_Wasser

technology

shared by Alexander Wittig on 23 Feb 16 - No Cached
  • Alexander Wittig on 23 Feb 16
     
    The functional principle is similar to ordinary pumped storage plants: when power is needed, water flows into the sphere and drives the turbine thus generating power. If surplus power is available (usually during the night), water can be pumped out of the sphere again, thus effectively charging the storage system.
Tom Gheysens

Biomimicr-E: Nature-Inspired Energy Systems | AAAS - 4 views

www.aaaspolicyfellowships.org/...nature-inspired-energy-systems

energy science phy space

shared by Tom Gheysens on 13 Jan 14 - No Cached
  • Tom Gheysens on 13 Jan 14
     
    some biomimicry used in energy systems... maybe it sparks some ideas
  • LeopoldS on 27 Jan 14
     
    not much new that has not been shared here before ... BUT: we have done relativley little on any of them. for good reasons?? don't know - maybe time to look into some of these again more closely Energy Efficiency( Termite mounds inspired regulated airflow for temperature control of large structures, preventing wasteful air conditioning and saving 10% energy.[1] Whale fins shapes informed the design of new-age wind turbine blades, with bumps/tubercles reducing drag by 30% and boosting power by 20%.[2][3][4] Stingray motion has motivated studies on this type of low-effort flapping glide, which takes advantage of the leading edge vortex, for new-age underwater robots and submarines.[5][6] Studies of microstructures found on shark skin that decrease drag and prevent accumulation of algae, barnacles, and mussels attached to their body have led to "anti-biofouling" technologies meant to address the 15% of marine vessel fuel use due to drag.[7][8][9][10] Energy Generation( Passive heliotropism exhibited by sunflowers has inspired research on a liquid crystalline elastomer and carbon nanotube system that improves the efficiency of solar panels by 10%, without using GPS and active repositioning panels to track the sun.[11][12][13] Mimicking the fluid dynamics principles utilized by schools of fish could help to optimize the arrangement of individual wind turbines in wind farms.[14] The nanoscale anti-reflection structures found on certain butterfly wings has led to a model to effectively harness solar energy.[15][16][17] Energy Storage( Inspired by the sunlight-to-energy conversion in plants, researchers are utilizing a protein in spinach to create a sort of photovoltaic cell that generates hydrogen from water (i.e. hydrogen fuel cell).[18][19] Utilizing a property of genetically-engineered viruses, specifically their ability to recognize and bind to certain materials (carbon nanotubes in this case), researchers have developed virus-based "scaffolds" that
Tom Gheysens

Cheap battery stores energy for a rainy day : Nature News & Comment - 0 views

www.nature.com/...energy-for-a-rainy-day-1.14486

energy battery science phy nature

shared by Tom Gheysens on 16 Jan 14 - No Cached
  • Tom Gheysens on 16 Jan 14
     
    Thijs interested? quinones are my field
  • Thijs Versloot on 20 Jan 14
     
    I think the major benefit of this system is the low cost of the products involved compared to standard flow batteries. However, two issues still remain, corrosion and size. I think these things need to be big right due to the volumetric storage using quinones? Nevertheless, it is interesting to see where this development will lead to. "The system is far from perfect, however: bromine and hydrobromic acid are corrosive, and could cause serious pollution if they leaked. "The bromine is, right now, the Achilles heel of this particular battery," Aziz says. The answer could be to go completely organic, he adds: "We are working on replacing the bromine with a different quinone." Are there quinones which would not be corrosive but retain good volumetric performance?
Paul N

Sugar battery promises 10 times the energy density of lithium - 1 views

www.extremetech.com/...hone-might-soon-run-on-enzymes

BIO technology nrg

shared by Paul N on 22 Jan 14 - No Cached
  • LeopoldS on 22 Jan 14
     
    intriguing but of little interest for space it seems to me
Thijs Versloot

New polymers could provide breakthrough in li-ion batteries - 0 views

www.wired.com/...batteries-flammable-polymer

technology energy storage lithium-ion

shared by Thijs Versloot on 14 Feb 14 - No Cached
  • Thijs Versloot on 14 Feb 14
     
    DeSimone and his team have been working with PFPE for years, and during their research, the crew found that another polymer electrolyte, polyethylen glycol or PEG, and PFPE could combine to dissolve salt, and potentially function as an electrolyte. When his team attached the PFPE to dimethyl carbonate, an electrolyte traditionally used in batteries, the resulting PFPE-DMC was a polymer that could move a battery's ions with insane levels of efficiency while remaining stable.
Thijs Versloot

Do the math #dothemath - 4 views

physics.ucsd.edu/do-the-math

blog science technology

shared by Thijs Versloot on 12 Nov 13 - No Cached
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  • Thijs Versloot on 12 Nov 13
     
    My daily read, a collection of blog posts related mostly to energy by UCSD prof Tom Murphy. Especially his experiments into home energy storage and his "do the math" attitude towards renewables are insightful and if not, then sometimes just plain funny.
  • LeopoldS on 12 Nov 13
LeopoldS

Testla energy Tesla Motors - 2 views

www.teslamotors.com/...teslaenergy

NRG energy batteries

shared by LeopoldS on 01 May 15 - No Cached
  • LeopoldS on 01 May 15
     
    tesla announcing home batteries at 350$/kW
  • ...1 more comment...
  • Thijs Versloot on 08 May 15
     
    Good stuff, no way it will be done in the netherlands however due to the 'equal-return' law in place here still that puts the price of returning to the grid equal to the costs of buying. The costs of this law are enormous however and energy companies would love to get rid off it, and it will in the upcoming years most likely. I wonder however if that makes sense on a regional/national level, returning to the grid on that scale produces a more stable supply. Why store for personal use only?
  • Ma Ru on 10 May 15
     
    Let's do some simple maths... Here in UK, example "economy 7" tarif yields night kWh approx. 12 pence cheaper than during day. Let's say the goal is to store energy equivalent to running a 2kW storage heater for 6 hours during the day. We need 12 kWh, so 12 times $350 this means need to spend approx. 1920 pounds for batteries. Time to break even at ROI: 1920 / 0.12 ~ 7.3 years... And this is assuming using the heater 365 days a year, and quite an expensive tariff (prepaid). SIWB :-)
  • Paul N on 17 May 15
     
    Also need to take into account that battery capacity tends to go down with time and usage
Paul N

Animal brains connected up to make mind-melded computer - 2 views

www.newscientist.com/...-make-mindmelded-computer.html

BIO INF FUN

shared by Paul N on 09 Jul 15 - No Cached
  • Paul N on 09 Jul 15
     
    Parallel processing in computing --- Brainet The team sent electrical pulses to all four rats and rewarded them when they synchronised their brain activity. After 10 training sessions, the rats were able to do this 61 per cent of the time. This synchronous brain activity can be put to work as a computer to perform tasks like information storage and pattern recognition, says Nicolelis. "We send a message to the brains, the brains incorporate that message, and we can retrieve the message later," he says. Dividing the computing of a task between multiple brains is similar to sharing computations between multiple processors in modern computers, "If you could collaboratively solve common problems [using a brainet], it would be a way to leverage the skills of different individuals for a common goal."
Nina Nadine Ridder

Carbon dioxide pools discovered in Aegean Sea - 1 views

phys.org/...-dioxide-pools-aegean-sea.html

marine_carbon geoengineering science ESS

shared by Nina Nadine Ridder on 17 Jul 15 - No Cached
  • Nina Nadine Ridder on 17 Jul 15
     
    The location of the second largest volcanic eruption in human history, the waters off Greece's Santorini are the site of newly discovered opalescent pools forming at 250 meters depth. The interconnected series of meandering, iridescent white pools contain high concentrations of carbon dioxide (CO 2) and may hold answers to questions related to deepsea carbon storage as well as provide a means of monitoring the volcano for future eruptions.
  • Thijs Versloot on 21 Jul 15
     
    We were there last year, swimming in one of those 'healthy' mud pits..
  • LeopoldS on 21 Jul 15
     
    250m and we did not know about them ??
Thijs Versloot

3D Printable Graphene Composite - 1 views

www.nature.com/srep11181

technology energy storage graphene 3d

shared by Thijs Versloot on 21 Jul 15 - No Cached
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  • Thijs Versloot on 21 Jul 15
     
    Both graphene and 3d printing has been around for quite a while, but combined they could provide unique properties of materials, eg in the use of high performance 3d batteries. This paper gives a nice overview of what has been done in the field up to now.
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