• A new solid state material converts visible light into high energy UV light

    From Jan Panteltje@alien@comet.invalid to sci.electronics.design on Mon Jun 29 05:14:06 2026
    From Newsgroup: sci.electronics.design

    From:
    https://www.sciencedaily.com/releases/2026/06/260623083058.htm

    New solid-state material converts sunlight into higher-energy UV light Scientists have found a way to turn ordinary sunlight into UV light with a novel material, unlocking new possibilities for solar-powered technologies.
    Date:
    June 26, 2026
    Source:
    Kyushu University
    Summary:
    A new sunlight-powered material can convert visible light into higher-energy UV light,
    overcoming a challenge that has frustrated scientists for years.
    The breakthrough could enable cleaner air purification, solar-driven chemistry,
    and advanced manufacturing technologies using nothing more than natural sunlight.
    --- Synchronet 3.22a-Linux NewsLink 1.2
  • From Martin Brown@'''newspam'''@nonad.co.uk to sci.electronics.design on Mon Jun 29 09:20:05 2026
    From Newsgroup: sci.electronics.design

    On 29/06/2026 06:14, Jan Panteltje wrote:
    From:
    https://www.sciencedaily.com/releases/2026/06/260623083058.htm

    New solid-state material converts sunlight into higher-energy UV light Scientists have found a way to turn ordinary sunlight into UV light with a novel material, unlocking new possibilities for solar-powered technologies.
    Date:
    June 26, 2026
    Source:
    Kyushu University
    Summary:
    A new sunlight-powered material can convert visible light into higher-energy UV light,
    overcoming a challenge that has frustrated scientists for years.
    The breakthrough could enable cleaner air purification, solar-driven chemistry,
    and advanced manufacturing technologies using nothing more than natural sunlight.

    It is an interesting and novel development. I wonder how photostable the material is with hard uv photons being made inside it. It is impressive
    to do this at typical sunlight illumination levels.

    Usually such frequency doubling requires non-linear materials and insane
    flux density. eg Doubling the NdYAG from 1066nm to green 533nm.
    --
    Martin Brown

    --- Synchronet 3.22a-Linux NewsLink 1.2
  • From john larkin@jl@glen--canyon.com to sci.electronics.design on Mon Jun 29 07:35:49 2026
    From Newsgroup: sci.electronics.design

    On Mon, 29 Jun 2026 05:14:06 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    From:
    https://www.sciencedaily.com/releases/2026/06/260623083058.htm

    New solid-state material converts sunlight into higher-energy UV light >Scientists have found a way to turn ordinary sunlight into UV light with a novel material, unlocking new possibilities for solar-powered technologies.
    Date:
    June 26, 2026
    Source:
    Kyushu University
    Summary:
    A new sunlight-powered material can convert visible light into higher-energy UV light,
    overcoming a challenge that has frustrated scientists for years.

    Frustrated scientists?

    The breakthrough could enable cleaner air purification, solar-driven chemistry,
    and advanced manufacturing technologies using nothing more than natural sunlight.

    NIF has triplers, IR-to-UV, running at megajoules level. Has for
    decades. Over 80% efficient, AI claims.

    The problem with organic triplers is that they may destroy themselves.

    At 1.9% conversion efficiency of this thing, it would be far better to
    use solar panels and UV LEDs.





    John Larkin
    Highland Tech Glen Canyon Design Center
    Lunatic Fringe Electronics
    --- Synchronet 3.22a-Linux NewsLink 1.2
  • From Bill Sloman@bill.sloman@ieee.org to sci.electronics.design on Tue Jun 30 01:04:26 2026
    From Newsgroup: sci.electronics.design

    On 30/06/2026 12:35 am, john larkin wrote:
    On Mon, 29 Jun 2026 05:14:06 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    From:
    https://www.sciencedaily.com/releases/2026/06/260623083058.htm

    New solid-state material converts sunlight into higher-energy UV light
    Scientists have found a way to turn ordinary sunlight into UV light with a novel material, unlocking new possibilities for solar-powered technologies.
    Date:
    June 26, 2026
    Source:
    Kyushu University
    Summary:
    A new sunlight-powered material can convert visible light into higher-energy UV light,
    overcoming a challenge that has frustrated scientists for years.

    Frustrated scientists?

    Trying to solve a particular problem cheaply.

    The breakthrough could enable cleaner air purification, solar-driven chemistry,
    and advanced manufacturing technologies using nothing more than natural sunlight.

    NIF has triplers, IR-to-UV, running at megajoules level. Has for
    decades. Over 80% efficient, AI claims.

    But at very high light intensities. The output of a doubler goes up as
    the square of the incident light intensity, and the output of a tripler
    as the cube.

    The problem with organic triplers is that they may destroy themselves.

    Depending on the power level and the particular chemical structure of
    the molecule doing the work.

    At 1.9% conversion efficiency of this thing, it would be far better to
    use solar panels and UV LEDs.

    Perhaps. Doing it inside a single complicated molecule means you don't
    have to put together a complicated mechanical assembly to make it happen.
    --
    Bill Sloman, Sydney

    --- Synchronet 3.22a-Linux NewsLink 1.2
  • From Jan Panteltje@alien@comet.invalid to sci.electronics.design on Mon Jun 29 15:24:55 2026
    From Newsgroup: sci.electronics.design

    john larkin <jl@glen--canyon.com>wrote:
    On Mon, 29 Jun 2026 05:14:06 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    From:
    https://www.sciencedaily.com/releases/2026/06/260623083058.htm

    New solid-state material converts sunlight into higher-energy UV light >>Scientists have found a way to turn ordinary sunlight into UV light with a novel material, unlocking new possibilities for
    solar-powered technologies.
    Date:
    June 26, 2026
    Source:
    Kyushu University
    Summary:
    A new sunlight-powered material can convert visible light into higher-energy UV light,
    overcoming a challenge that has frustrated scientists for years.

    Frustrated scientists?

    The breakthrough could enable cleaner air purification, solar-driven chemistry,
    and advanced manufacturing technologies using nothing more than natural sunlight.

    NIF has triplers, IR-to-UV, running at megajoules level. Has for
    decades. Over 80% efficient, AI claims.

    The problem with organic triplers is that they may destroy themselves.

    At 1.9% conversion efficiency of this thing, it would be far better to
    use solar panels and UV LEDs.

    Yea, I have a litle LED UV flashlight
    it runs on 3 Eneloop AAA batteries (in series).

    And this:
    https://panteltje.nl/pub/UV_EPROM_erase_tube_IMG_7110.JPG
    Good old EPROM days...
    --- Synchronet 3.22a-Linux NewsLink 1.2
  • From john larkin@jl@glen--canyon.com to sci.electronics.design on Mon Jun 29 09:08:15 2026
    From Newsgroup: sci.electronics.design

    On Mon, 29 Jun 2026 15:24:55 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    john larkin <jl@glen--canyon.com>wrote:
    On Mon, 29 Jun 2026 05:14:06 GMT, Jan Panteltje <alien@comet.invalid> >>wrote:

    From:
    https://www.sciencedaily.com/releases/2026/06/260623083058.htm

    New solid-state material converts sunlight into higher-energy UV light >>>Scientists have found a way to turn ordinary sunlight into UV light with a novel material, unlocking new possibilities for
    solar-powered technologies.
    Date:
    June 26, 2026
    Source:
    Kyushu University
    Summary:
    A new sunlight-powered material can convert visible light into higher-energy UV light,
    overcoming a challenge that has frustrated scientists for years.

    Frustrated scientists?

    The breakthrough could enable cleaner air purification, solar-driven chemistry,
    and advanced manufacturing technologies using nothing more than natural sunlight.

    NIF has triplers, IR-to-UV, running at megajoules level. Has for
    decades. Over 80% efficient, AI claims.

    The problem with organic triplers is that they may destroy themselves.

    At 1.9% conversion efficiency of this thing, it would be far better to
    use solar panels and UV LEDs.

    Yea, I have a litle LED UV flashlight
    it runs on 3 Eneloop AAA batteries (in series).

    And this:
    https://panteltje.nl/pub/UV_EPROM_erase_tube_IMG_7110.JPG
    Good old EPROM days...

    I use a UV flashlight to cure Bondic. It's much better than the tiny
    LED thing that comes with Bondic.


    John Larkin
    Highland Tech Glen Canyon Design Center
    Lunatic Fringe Electronics
    --- Synchronet 3.22a-Linux NewsLink 1.2
  • From Jan Panteltje@alien@comet.invalid to sci.electronics.design on Mon Jun 29 16:50:25 2026
    From Newsgroup: sci.electronics.design

    john larkin <jl@glen--canyon.com>wrote:
    On Mon, 29 Jun 2026 15:24:55 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    john larkin <jl@glen--canyon.com>wrote:
    On Mon, 29 Jun 2026 05:14:06 GMT, Jan Panteltje <alien@comet.invalid> >>>wrote:

    From:
    https://www.sciencedaily.com/releases/2026/06/260623083058.htm

    New solid-state material converts sunlight into higher-energy UV light >>>>Scientists have found a way to turn ordinary sunlight into UV light with a novel material, unlocking new possibilities for
    solar-powered technologies.
    Date:
    June 26, 2026
    Source:
    Kyushu University
    Summary:
    A new sunlight-powered material can convert visible light into higher-energy UV light,
    overcoming a challenge that has frustrated scientists for years.

    Frustrated scientists?

    The breakthrough could enable cleaner air purification, solar-driven chemistry,
    and advanced manufacturing technologies using nothing more than natural sunlight.

    NIF has triplers, IR-to-UV, running at megajoules level. Has for
    decades. Over 80% efficient, AI claims.

    The problem with organic triplers is that they may destroy themselves.

    At 1.9% conversion efficiency of this thing, it would be far better to >>>use solar panels and UV LEDs.

    Yea, I have a litle LED UV flashlight
    it runs on 3 Eneloop AAA batteries (in series).

    And this:
    https://panteltje.nl/pub/UV_EPROM_erase_tube_IMG_7110.JPG
    Good old EPROM days...

    I use a UV flashlight to cure Bondic. It's much better than the tiny
    LED thing that comes with Bondic.

    I have never used 'Bondic'
    I repaired a very old mp3 player's battery compartment with hotglue,
    when it hardens (cools) it stays in form.


    I did a 'quick fix' with Tesa white masking tape
    when my old laptop srews failed to keep it closed after battery replacement,
    a broken lose in plastic embedded nut,,
    Thought will repair it later with some 2 componet glue...
    But after more than a year the tape still holds it together!
    better than the original screws!
    Amazing stuff.





    --- Synchronet 3.22a-Linux NewsLink 1.2
  • From john larkin@jl@glen--canyon.com to sci.electronics.design on Mon Jun 29 10:21:20 2026
    From Newsgroup: sci.electronics.design

    On Mon, 29 Jun 2026 16:50:25 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    john larkin <jl@glen--canyon.com>wrote:
    On Mon, 29 Jun 2026 15:24:55 GMT, Jan Panteltje <alien@comet.invalid> >>wrote:

    john larkin <jl@glen--canyon.com>wrote:
    On Mon, 29 Jun 2026 05:14:06 GMT, Jan Panteltje <alien@comet.invalid> >>>>wrote:

    From:
    https://www.sciencedaily.com/releases/2026/06/260623083058.htm

    New solid-state material converts sunlight into higher-energy UV light >>>>>Scientists have found a way to turn ordinary sunlight into UV light with a novel material, unlocking new possibilities for
    solar-powered technologies.
    Date:
    June 26, 2026
    Source:
    Kyushu University
    Summary:
    A new sunlight-powered material can convert visible light into higher-energy UV light,
    overcoming a challenge that has frustrated scientists for years.

    Frustrated scientists?

    The breakthrough could enable cleaner air purification, solar-driven chemistry,
    and advanced manufacturing technologies using nothing more than natural sunlight.

    NIF has triplers, IR-to-UV, running at megajoules level. Has for >>>>decades. Over 80% efficient, AI claims.

    The problem with organic triplers is that they may destroy themselves.

    At 1.9% conversion efficiency of this thing, it would be far better to >>>>use solar panels and UV LEDs.

    Yea, I have a litle LED UV flashlight
    it runs on 3 Eneloop AAA batteries (in series).

    And this:
    https://panteltje.nl/pub/UV_EPROM_erase_tube_IMG_7110.JPG
    Good old EPROM days...

    I use a UV flashlight to cure Bondic. It's much better than the tiny
    LED thing that comes with Bondic.

    I have never used 'Bondic'
    I repaired a very old mp3 player's battery compartment with hotglue,
    when it hardens (cools) it stays in form.


    I did a 'quick fix' with Tesa white masking tape
    when my old laptop srews failed to keep it closed after battery replacement, >a broken lose in plastic embedded nut,,
    Thought will repair it later with some 2 componet glue...
    But after more than a year the tape still holds it together!
    better than the original screws!
    Amazing stuff.





    The cool thing about Bondic is that it stays liquid until you hit it
    with the UV, and then it solidifies instantly.

    I do worry about it hardening in tight gaps, which is one reason to
    use a high power UV source and squirt the light in edgewise.

    Bondic, hot melt, epoxy, solder all have their uses.

    A Manhattan-style prototype works best with epoxy.



    John Larkin
    Highland Tech Glen Canyon Design Center
    Lunatic Fringe Electronics
    --- Synchronet 3.22a-Linux NewsLink 1.2
  • From brian@nospam@b-howie.co.uk to sci.electronics.design on Tue Jun 30 05:17:05 2026
    From Newsgroup: sci.electronics.design

    In message <m8054llhh3uj0gfnq1aq8hsc1lidujtnkd@4ax.com>, john larkin <jl@glen--canyon.com> writes
    On Mon, 29 Jun 2026 05:14:06 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    From:
    https://www.sciencedaily.com/releases/2026/06/260623083058.htm

    New solid-state material converts sunlight into higher-energy UV light >>Scientists have found a way to turn ordinary sunlight into UV light
    with a novel material, unlocking new possibilities for solar-powered >>technologies.
    Date:
    June 26, 2026
    Source:
    Kyushu University
    Summary:
    A new sunlight-powered material can convert visible light into >>higher-energy UV light,
    overcoming a challenge that has frustrated scientists for years.

    Frustrated scientists?

    The breakthrough could enable cleaner air purification, solar-driven >>chemistry,
    and advanced manufacturing technologies using nothing more than
    natural sunlight.

    NIF has triplers, IR-to-UV, running at megajoules level. Has for
    decades. Over 80% efficient, AI claims.

    The problem with organic triplers is that they may destroy themselves.

    At 1.9% conversion efficiency of this thing, it would be far better to
    use solar panels and UV LEDs.

    Is good ole mercury vapour more efficient?

    Brian
    --
    Brian Howie
    --- Synchronet 3.22a-Linux NewsLink 1.2
  • From Bill Sloman@bill.sloman@ieee.org to sci.electronics.design on Wed Jul 1 00:44:01 2026
    From Newsgroup: sci.electronics.design

    On 30/06/2026 2:17 pm, brian wrote:
    In message <m8054llhh3uj0gfnq1aq8hsc1lidujtnkd@4ax.com>, john larkin <jl@glen--canyon.com> writes
    On Mon, 29 Jun 2026 05:14:06 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    From:
    https://www.sciencedaily.com/releases/2026/06/260623083058.htm

    New solid-state material converts sunlight into higher-energy UV light
    Scientists have found a way to turn ordinary sunlight into UV light
    with a novel material, unlocking new possibilities for solar-powered
    technologies.
    Date:
    June 26, 2026
    Source:
    Kyushu University
    Summary:
    A new sunlight-powered material can convert visible light into
    higher-energy UV light,
    overcoming a challenge that has frustrated scientists for years.

    Frustrated scientists?

    The breakthrough could enable cleaner air purification, solar-driven
    chemistry,
    and advanced manufacturing technologies using nothing more than
    natural sunlight.

    NIF has triplers, IR-to-UV, running at megajoules level. Has for
    decades. Over 80% efficient, AI claims.

    The problem with organic triplers is that they may destroy themselves.

    At 1.9% conversion efficiency of this thing, it would be far better to
    use solar panels and UV LEDs.

    Is good ole mercury vapour more efficient?

    Probably not. You need to strike an arc in the mercury vapour to
    generate the UV, and the active bit of the arc gets rather warm.

    Mercury vapour lamps have a silica bulb to let the hard UV get through,
    but the silica bulb also tolerates the high temperatures in the
    immediate vicinity of the arc. Technically speaking, an arc discharge is differentiated from a glow discharge by the mechanism that generates the electrons that carry the current through vapour that does the emitting.

    Both get surfaces pretty warm.
    --
    Bill Sloman, Sydney

    --- Synchronet 3.22a-Linux NewsLink 1.2
  • From John R Walliker@jrwalliker@gmail.com to sci.electronics.design on Tue Jun 30 17:15:00 2026
    From Newsgroup: sci.electronics.design

    On 30/06/2026 15:44, Bill Sloman wrote:
    On 30/06/2026 2:17 pm, brian wrote:
    In message <m8054llhh3uj0gfnq1aq8hsc1lidujtnkd@4ax.com>, john larkin
    <jl@glen--canyon.com> writes
    On Mon, 29 Jun 2026 05:14:06 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    From:
    https://www.sciencedaily.com/releases/2026/06/260623083058.htm

    New solid-state material converts sunlight into higher-energy UV light >>>> Scientists have found a way to turn ordinary sunlight into UV light
    with a novel material, unlocking new possibilities for solar-powered
    technologies.
    Date:
    June 26, 2026
    Source:
    Kyushu University
    Summary:
    A new sunlight-powered material can convert visible light into
    higher-energy UV light,
    overcoming a challenge that has frustrated scientists for years.

    Frustrated scientists?

    The breakthrough could enable cleaner air purification, solar-driven
    chemistry,
    and advanced manufacturing technologies using nothing more than
    natural sunlight.

    NIF has triplers, IR-to-UV, running at megajoules level. Has for
    decades. Over 80% efficient, AI claims.

    The problem with organic triplers is that they may destroy themselves.

    At 1.9% conversion efficiency of this thing, it would be far better to
    use solar panels and UV LEDs.

    Is good ole mercury vapour more efficient?

    Probably not. You need to strike an arc in the mercury vapour to
    generate the UV, and the active bit of the arc gets rather warm.

    Mercury vapour lamps have a silica bulb to let the hard UV get through,
    but the silica bulb also tolerates the high temperatures in the
    immediate vicinity of the arc. Technically speaking, an arc discharge is differentiated from a glow discharge by the mechanism that generates the electrons that carry the current through vapour that does the emitting.

    Both get surfaces pretty warm.

    I'm fairly sure that my old benchtop UV eraser used a low pressure
    mercury glow discharge lamp. The high speed industrial ones were
    probably arc lamps.
    John

    --- Synchronet 3.22a-Linux NewsLink 1.2
  • From brian@nospam@b-howie.co.uk to sci.electronics.design on Tue Jun 30 20:34:05 2026
    From Newsgroup: sci.electronics.design

    In message <1120knl$14tb1$2@dont-email.me>, Bill Sloman
    <bill.sloman@ieee.org> writes
    On 30/06/2026 2:17 pm, brian wrote:
    In message <m8054llhh3uj0gfnq1aq8hsc1lidujtnkd@4ax.com>, john larkin >><jl@glen--canyon.com> writes
    On Mon, 29 Jun 2026 05:14:06 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    From:
    https://www.sciencedaily.com/releases/2026/06/260623083058.htm

    New solid-state material converts sunlight into higher-energy UV light >>>> Scientists have found a way to turn ordinary sunlight into UV light >>>>with a novel material, unlocking new possibilities for solar-powered >>>>technologies.
    Date:
    June 26, 2026
    Source:
    Kyushu University
    Summary:
    A new sunlight-powered material can convert visible light into >>>>higher-energy UV light,
    overcoming a challenge that has frustrated scientists for years.

    Frustrated scientists?

    The breakthrough could enable cleaner air purification,
    solar-driven chemistry,
    and advanced manufacturing technologies using nothing more than >>>>natural sunlight.

    NIF has triplers, IR-to-UV, running at megajoules level. Has for
    decades. Over 80% efficient, AI claims.

    The problem with organic triplers is that they may destroy themselves.

    At 1.9% conversion efficiency of this thing, it would be far better to
    use solar panels and UV LEDs.
    Is good ole mercury vapour more efficient?

    Probably not. You need to strike an arc in the mercury vapour to
    generate the UV, and the active bit of the arc gets rather warm.

    Mercury vapour lamps have a silica bulb to let the hard UV get through,
    but the silica bulb also tolerates the high temperatures in the
    immediate vicinity of the arc. Technically speaking, an arc discharge
    is differentiated from a glow discharge by the mechanism that generates
    the electrons that carry the current through vapour that does the
    emitting.

    Both get surfaces pretty warm.


    I've got a very old hand held one that runs off batteries. It's got
    what looks like a 4" fluorescent tube , without the coating . It was
    probably used for detecting forged bank notes .

    A bit like this ,but not LED

    <https://www.philately2019.co.uk/store/portable-uv-hand-lamp-l80-to-deter mine-fluorescence-4-watt-longwave>

    Brian
    --
    Brian Howie
    --- Synchronet 3.22a-Linux NewsLink 1.2
  • From Martin Brown@'''newspam'''@nonad.co.uk to sci.electronics.design on Wed Jul 1 20:37:46 2026
    From Newsgroup: sci.electronics.design

    On 30/06/2026 20:34, brian wrote:
    In message <1120knl$14tb1$2@dont-email.me>, Bill Sloman <bill.sloman@ieee.org> writes
    On 30/06/2026 2:17 pm, brian wrote:
    In message <m8054llhh3uj0gfnq1aq8hsc1lidujtnkd@4ax.com>, john larkin
    <jl@glen--canyon.com> writes
    On Mon, 29 Jun 2026 05:14:06 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    From:
    https://www.sciencedaily.com/releases/2026/06/260623083058.htm

    New solid-state material converts sunlight into higher-energy UV light >>>>> Scientists have found a way to turn ordinary sunlight into UV light >>>>> with a novel material, unlocking new possibilities for
    solar-powered technologies.
    Date:
    June 26, 2026
    Source:
    Kyushu University
    Summary:
    A new sunlight-powered material can convert visible light into
    higher-energy UV light,
    overcoming a challenge that has frustrated scientists for years.

    Frustrated scientists?

    The breakthrough could enable cleaner air purification,
    solar-driven chemistry,
    and advanced manufacturing technologies using nothing more than
    natural sunlight.

    NIF has triplers, IR-to-UV, running at megajoules level. Has for
    decades. Over 80% efficient, AI claims.

    The problem with organic triplers is that they may destroy themselves. >>>>
    At 1.9% conversion efficiency of this thing, it would be far better to >>>> use solar panels and UV LEDs.
    -aIs good ole mercury vapour more efficient?

    Probably not. You need to strike an arc in the mercury vapour to
    generate the UV, and the active bit of the arc gets rather warm.

    Mercury vapour lamps have a silica bulb to let the hard UV get
    through, but the silica bulb also tolerates the high temperatures in
    the immediate vicinity of the arc. Technically speaking, an arc
    discharge is differentiated from a glow discharge by the mechanism
    that generates the electrons that carry the current through vapour
    that does the emitting.

    Both get surfaces pretty warm.

    The UV emission depends largely on the material of the envelope.

    Ordinary glass is moderately opaque to UV. Quartz or silica lets the
    hardest nasty UV through as used in EPROM erasers whilst Wood's glass
    lets soft UV through just beyond violet.

    https://en.wikipedia.org/wiki/Wood%27s_glass


    I've got a-a very old hand held one that runs off batteries. It's got
    what looks like a 4" fluorescent tube , without the coating . It was probably used for detecting forged bank notes .

    A bit like this ,but not-a LED

    <https://www.philately2019.co.uk/store/portable-uv-hand-lamp-l80-to-deter mine-fluorescence-4-watt-longwave>

    They were common for detecting fake stamps, banknotes, passports and car documents. If they don't have the right fluorescence then they are not produced using the right paper. I have one still in working condition.

    Different minerals fluoresce differently under soft or hard UV.

    A more interesting trick which has been developed for agriculture poly
    tunnels is a nano dot material that is transparent to visible light but downconverts blue to UV photons into red light wavelengths suitable for photosynthesis. Additional yields of 5-10% and less thermal stress in polytunnels has been reported in early trials.

    https://farmingfuturefood.com/red-light-growers-delight-startups-spray-on-product-transforms-uv-in-greenhouses-to-improve-crop-performance/

    They claim 47% yield increase there - I'm sceptical about that...
    10% improvement seems quite plausible though.
    --
    Martin Brown

    --- Synchronet 3.22a-Linux NewsLink 1.2