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posted by janrinok on Monday June 20, @07:13AM   Printer-friendly [Skip to comment(s)]
from the it's-only-wafer-thin dept.

Atomically thin semiconductors for nanophotonics:

Atomically thin semiconductors such as molybdenum disulfide and tungsten disulfide are promising materials for nanoscale photonic devices. These approximately 2D semiconductors support so-called excitons, which are bound electron-hole pairs, that can align vertically along the thin plane of the materials.

Excitons are bound electron-hole pairs that can interact with electrical charges, spins, and phonons. This range of interactions indicates that excitons could herald a new wave of devices based on nanoscale photonics and optoelectronics.

For his Ph.D. thesis, Rasmus Godiksen investigated the exciton behavior in atomically thin semiconductors, focusing on emitted light, by exploring the potential of excitons in ultra-thin semiconductors such as molybdenum disulfide (MoS2) and tungsten disulfide (WS2). The semiconductors are so thin that can be approximated as 2D materials. So, in effect, Godiksen studied excitons in 2D materials.

First, Godiksen and his collaborators showed that the 2D excitons are very sensitive to their nanoscopic environment. Using photoluminescence (PL) imaging techniques, they measured fluorescence fluctuations due to charge transfer to the semiconductor. Such fluctuations are spatially correlated over tens of micrometers in WS2 monolayers on metal films.

Due to charge fluctuations from trap states (which are states that trap excited carriers such as electrons, holes, and excitons), they follow power-law statistics with simultaneous changes in emission intensity, lifetime, and exciton-trion ratios. Power-law statistics is an indicator of trapping and de-trapping of excitons, so this provides evidence of trapped states.

Excitons in WS2 also have a degree of freedom with regard to valleys, which couples spin polarization to momentum direction. Valleys in the band structure can be explored using circularly polarized light. Exciting or detecting an exciton in one valley can be used in information technologies, for example.

[...] Single-photon sources are interesting for quantum computing, molecular sensors could increase sensitivity down to the single molecule level, and valleytronic devices could pave the way for a new generation of electronic devices based on valley polarization.

Reference:
Godiksen, R. H. (2022). Atomically Thin Semiconductors For Nanophotonics. Ph.D. Thesis. Eindhoven University of Technology.


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(1)
  • (Score: 0) by Anonymous Coward on Monday June 20, @08:24AM (2 children)

    by Anonymous Coward on Monday June 20, @08:24AM (#1254550)

    Are they in any relation with the excessive-pleasure machine?

    • (Score: 0) by Anonymous Coward on Monday June 20, @11:19AM (1 child)

      by Anonymous Coward on Monday June 20, @11:19AM (#1254570)

      Before you get a Hardon,
      Maybe the slepton is a better candidate for promiscuous activity.
      https://en.wikipedia.org/wiki/Slepton [wikipedia.org]

      • (Score: 0) by Anonymous Coward on Monday June 20, @12:14PM

        by Anonymous Coward on Monday June 20, @12:14PM (#1254587)

        Before you get a Hardon,

        Yeah, yeah, I still remember, before that I need a blue pill or two.

  • (Score: 0) by Anonymous Coward on Monday June 20, @10:41AM (2 children)

    by Anonymous Coward on Monday June 20, @10:41AM (#1254564)

    10, 20, 30?

    Seems like an endless stream of ~promising~ tech always just around the corner but never actually materializing.

    Well its sure to get funding anyway.

    • (Score: 2) by HiThere on Monday June 20, @12:39PM

      by HiThere (866) on Monday June 20, @12:39PM (#1254588) Journal

      If you think none of it ever materializes, you've got a short time horizon. It does usually take awhile, however, and only some of it is ever important. But at the beginning you can't tell which part.

      --
      Javascript is what you use to allow unknown third parties to run software you have no idea about on your computer.
    • (Score: 2) by Freeman on Monday June 20, @05:31PM

      by Freeman (732) on Monday June 20, @05:31PM (#1254682) Journal

      I watched the evolution of nano-crystal displays play out. I.E. Quantum Dot Displays, MicoLEDs, etc. are more or less using similar technology as the nanocrystal display technology that was pie in the sky over a decade ago.

      https://www.technologyreview.com/2006/05/01/100953/nanocrystal-displays/ [technologyreview.com]

      Still would like one, but still too cheap to buy one.

      --
      Forced Microsoft Account for Windows Login → Switch to Linux.
  • (Score: 0) by Anonymous Coward on Monday June 20, @11:25AM

    by Anonymous Coward on Monday June 20, @11:25AM (#1254572)

    I'll match your Exciton and raise the anté with a broken Cooper pair.

  • (Score: -1, Offtopic) by Anonymous Coward on Monday June 20, @12:03PM

    by Anonymous Coward on Monday June 20, @12:03PM (#1254583)

    quasiparticle family?

    A Manic Kin.

  • (Score: -1, Spam) by Anonymous Coward on Tuesday June 21, @06:33PM

    by Anonymous Coward on Tuesday June 21, @06:33PM (#1254984)

    Guess what Dalek? YOU LOSE, hosts work vs. Symbiote C2 server(s) per this line from a MUCH better article than the one used here from bradley13 per "configuration in the binary that used the git[.]bancodobrasil[.]dev domain as its C2 server" from https://www.intezer.com/blog/research/new-linux-threat-symbiote/ [intezer.com] (INTEZER's now owned by Microsoft iirc as well).

    & did I block that in my original posts here https://soylentnews.org/comments.pl?noupdate=1&sid=49835&page=1&cid=1253504#commentwrap [soylentnews.org] on this BOGUS sockpuppet upmodding yourselves shithole website (which also noted FIREWALLS are invaluable here too, per wildcards (or even IP address use, URL domain/subdomain too in many as well)?

    YES I DID! I was correct...

    & YES, hosts work vs. this threat too stupid!

    FACT: hosts files block symbiote C2 servers which is all you really need to do to nullify their communication.

    FACT: Exfiltration isn't possible without orders either.

    FACT: Orders come from C2 servers!

    So YOU LOSE chump... a BETTER ARTICLE than what I used proves it for me!

    * THANKS FOR LOSING TO ME yet again, as always for you... try me again? THIS COMES UP AS PROOF (as well as another I have on YOU regarding using sources where YOU contradict yourself - want quotes of that too? ASK!)

    HOW ESPECIALLY EMBARASSING FOR YOU with your NO-DOUBT self-upmodded by sockpuppet accounts of YOURSELF too - now that YOU have EGG ON YOUR FACE fucko!

    APK

    P.S.=> Do yourself a FAVOR - don't ever, EVER try me ever again OR I WILL MAKE SURE YOU SHIT ON YOURSELF yet again as always, easlly... apk

  • (Score: -1, Spam) by Anonymous Coward on Tuesday June 21, @08:36PM

    by Anonymous Coward on Tuesday June 21, @08:36PM (#1255043)

    Guess what Dalek? YOU LOSE, hosts work vs. Symbiote C2 server(s) per this line from a MUCH better article than the one used here from bradley13 per "configuration in the binary that used the git[.]bancodobrasil[.]dev domain as its C2 server" from https://www.intezer.com/blog/research/new-linux-threat-symbiote/ [intezer.com] (INTEZER's now owned by Microsoft iirc as well).

    & did I block that in my original posts here https://soylentnews.org/comments.pl?noupdate=1&sid=49835&page=1&cid=1253504#commentwrap [soylentnews.org] on this BOGUS sockpuppet upmodding yourselves shithole website (which also noted FIREWALLS are invaluable here too, per wildcards (or even IP address use, URL domain/subdomain too in many as well)?

    YES I DID! I was correct...

    & YES, hosts work vs. this threat too stupid!

    FACT: hosts files block symbiote C2 servers which is all you really need to do to nullify their communication.

    FACT: Exfiltration isn't possible without orders either.

    FACT: Orders come from C2 servers!

    So YOU LOSE chump... a BETTER ARTICLE than what I used proves it for me!

    * THANKS FOR LOSING TO ME yet again, as always for you... try me again? THIS COMES UP AS PROOF (as well as another I have on YOU regarding using sources where YOU contradict yourself - want quotes of that too? ASK!)

    HOW ESPECIALLY EMBARASSING FOR YOU with your NO-DOUBT self-upmodded by sockpuppet accounts of YOURSELF too - now that YOU have EGG ON YOUR FACE fucko!

    APK

    P.S.=> Do yourself a FAVOR - don't ever, EVER try me ever again OR I WILL MAKE SURE YOU SHIT ON YOURSELF yet again as always, easlly... apk

  • (Score: -1, Spam) by Anonymous Coward on Tuesday June 21, @09:10PM

    by Anonymous Coward on Tuesday June 21, @09:10PM (#1255060)

    Guess what Dalek? YOU LOSE, hosts work vs. Symbiote C2 server(s) per this line from a MUCH better article than the one used here from bradley13 per "configuration in the binary that used the git[.]bancodobrasil[.]dev domain as its C2 server" from https://www.intezer.com/blog/research/new-linux-threat-symbiote/ [intezer.com] (INTEZER's now owned by Microsoft iirc as well).

    & did I block that in my original posts here https://soylentnews.org/comments.pl?noupdate=1&sid=49835&page=1&cid=1253504#commentwrap [soylentnews.org] on this BOGUS sockpuppet upmodding yourselves shithole website (which also noted FIREWALLS are invaluable here too, per wildcards (or even IP address use, URL domain/subdomain too in many as well)?

    YES I DID! I was correct...

    & YES, hosts work vs. this threat too stupid!

    FACT: hosts files block symbiote C2 servers which is all you really need to do to nullify their communication.

    FACT: Exfiltration isn't possible without orders either.

    FACT: Orders come from C2 servers!

    So YOU LOSE chump... a BETTER ARTICLE than what I used proves it for me!

    * THANKS FOR LOSING TO ME yet again, as always for you... try me again? THIS COMES UP AS PROOF (as well as another I have on YOU regarding using sources where YOU contradict yourself - want quotes of that too? ASK!)

    HOW ESPECIALLY EMBARASSING FOR YOU with your NO-DOUBT self-upmodded by sockpuppet accounts of YOURSELF too - now that YOU have EGG ON YOUR FACE fucko!

    APK

    P.S.=> Do yourself a FAVOR - don't ever, EVER try me ever again OR I WILL MAKE SURE YOU SHIT ON YOURSELF yet again as always, easlly... apk

  • (Score: -1, Spam) by Anonymous Coward on Tuesday June 21, @11:15PM

    by Anonymous Coward on Tuesday June 21, @11:15PM (#1255113)

    Guess what Dalek? YOU LOSE, hosts work vs. Symbiote C2 server(s) per this line from a MUCH better article than the one used here from bradley13 per "configuration in the binary that used the git[.]bancodobrasil[.]dev domain as its C2 server" from https://www.intezer.com/blog/research/new-linux-threat-symbiote/ [intezer.com] (INTEZER's now owned by Microsoft iirc as well).

    & did I block that in my original posts here https://soylentnews.org/comments.pl?noupdate=1&sid=49835&page=1&cid=1253504#commentwrap [soylentnews.org] on this BOGUS sockpuppet upmodding yourselves shithole website (which also noted FIREWALLS are invaluable here too, per wildcards (or even IP address use, URL domain/subdomain too in many as well)?

    YES I DID! I was correct...

    & YES, hosts work vs. this threat too stupid!

    FACT: hosts files block symbiote C2 servers which is all you really need to do to nullify their communication.

    FACT: Exfiltration isn't possible without orders either.

    FACT: Orders come from C2 servers!

    So YOU LOSE chump... a BETTER ARTICLE than what I used proves it for me!

    * THANKS FOR LOSING TO ME yet again, as always for you... try me again? THIS COMES UP AS PROOF (as well as another I have on YOU regarding using sources where YOU contradict yourself - want quotes of that too? ASK!)

    HOW ESPECIALLY EMBARASSING FOR YOU with your NO-DOUBT self-upmodded by sockpuppet accounts of YOURSELF too - now that YOU have EGG ON YOUR FACE fucko!

    APK

    P.S.=> Do yourself a FAVOR - don't ever, EVER try me ever again OR I WILL MAKE SURE YOU SHIT ON YOURSELF yet again as always, easlly... apk

  • (Score: -1, Spam) by Anonymous Coward on Wednesday June 22, @03:26AM

    by Anonymous Coward on Wednesday June 22, @03:26AM (#1255204)

    Guess what Dalek? YOU LOSE, hosts work vs. Symbiote C2 server(s) per this line from a MUCH better article than the one used here from bradley13 per "configuration in the binary that used the git[.]bancodobrasil[.]dev domain as its C2 server" from https://www.intezer.com/blog/research/new-linux-threat-symbiote/ [intezer.com] (INTEZER's now owned by Microsoft iirc as well).

    & did I block that in my original posts here https://soylentnews.org/comments.pl?noupdate=1&sid=49835&page=1&cid=1253504#commentwrap [soylentnews.org] on this BOGUS sockpuppet upmodding yourselves shithole website (which also noted FIREWALLS are invaluable here too, per wildcards (or even IP address use, URL domain/subdomain too in many as well)?

    YES I DID! I was correct...

    & YES, hosts work vs. this threat too stupid!

    FACT: hosts files block symbiote C2 servers which is all you really need to do to nullify their communication.

    FACT: Exfiltration isn't possible without orders either.

    FACT: Orders come from C2 servers!

    So YOU LOSE chump... a BETTER ARTICLE than what I used proves it for me!

    * THANKS FOR LOSING TO ME yet again, as always for you... try me again? THIS COMES UP AS PROOF (as well as another I have on YOU regarding using sources where YOU contradict yourself - want quotes of that too? ASK!)

    HOW ESPECIALLY EMBARASSING FOR YOU with your NO-DOUBT self-upmodded by sockpuppet accounts of YOURSELF too - now that YOU have EGG ON YOUR FACE fucko!

    APK

    P.S.=> Do yourself a FAVOR - don't ever, EVER try me ever again OR I WILL MAKE SURE YOU SHIT ON YOURSELF yet again as always, easlly... apk

  • (Score: -1, Spam) by Anonymous Coward on Wednesday June 22, @06:50AM

    by Anonymous Coward on Wednesday June 22, @06:50AM (#1255249)

    Guess what Dalek? YOU LOSE, hosts work vs. Symbiote C2 server(s) per this line from a MUCH better article than the one used here from bradley13 per "configuration in the binary that used the git[.]bancodobrasil[.]dev domain as its C2 server" from https://www.intezer.com/blog/research/new-linux-threat-symbiote/ [intezer.com]

    & did I block that in my original posts here https://soylentnews.org/comments.pl?noupdate=1&sid=49835&page=1&cid=1253504#commentwrap [soylentnews.org] on this BOGUS sockpuppet upmodding yourselves shithole website (which also noted FIREWALLS are invaluable here too, per wildcards (or even IP address use, URL domain/subdomain too in many as well))?

    YES I DID! I was correct...

    & YES, hosts work vs. this threat too stupid!

    FACT: hosts files block symbiote C2 servers which is all you really need to do to nullify their communication.

    FACT: Exfiltration isn't possible without orders either.

    FACT: Orders come from C2 servers!

    So YOU LOSE chump... a BETTER ARTICLE than what I used proves it for me!

    * THANKS FOR LOSING TO ME yet again, as always for you... try me again? THIS COMES UP AS PROOF (as well as another I have on YOU regarding using sources where YOU contradict yourself - want quotes of that too? ASK!)

    HOW ESPECIALLY EMBARASSING FOR YOU with your NO-DOUBT self-upmodded by sockpuppet accounts of YOURSELF too - now that YOU have EGG ON YOUR FACE fucko!

    APK

    P.S.=> Do yourself a FAVOR - don't ever, EVER try me ever again OR I WILL MAKE SURE YOU SHIT ON YOURSELF yet again as always, easlly... apk

(1)