An 18‐membered‐ring boron oxide (18MR‐B2O3) is predicted with 1:1 ratio of [BO3] triangles and [B3O6] boroxol rings. Its van der Waals stackings, AA and AB, satisfy all the stringent criteria for deep‐ultraviolet nonlinear optical (DUV NLO) materials, exhibiting short second harmonic generation (SHG) phase‐matching (PM) wavelength and large SHG response.
Abstract
Deep‐ultraviolet nonlinear optical (DUV NLO) materials are attracting increasing attention because of their structural diversity and complexity. Using the two‐dimensional (2D) crystal structure prediction method combined with the first‐principles calculations, here we propose layered 18‐membered‐ring (18MR) boron oxide B2O3 polymorphs as high‐performance NLO materials. 18MR‐B2O3 with the AA and AB stackings are potential DUV NLO materials. The superior performing 18MR‐B2O3AB has an unprecedentedly high second harmonic generation coefficient of 1.63 pm V−1, the largest among the DUV NLO materials, three times larger than that of the advanced DUV NLO material KBe2BO3F2 and comparable to that of β‐BaB2O4. Its unusually large birefringence of 0.196 at 400 nm guarantees the phase‐matching wavelength λPM to reach this material's extreme absorption edge of ≈154 nm.
https://ift.tt/31foyLC
The plot thickened.
So I head down to the library to see if they had a copy for my 10 year old daughter. The librarian said that my description rang a bell but she wasn’t sure if it was there or not
OK guys, got way bigger of a response than I typically did a long time ago. Unexpected and keep posting. I am closing the giveaway at this time so I can get to bed. Feel free to leave comments and possibly still get tipped. I just can't stay awake any longer LoL It's been a long week.
We'll Do another one soon,
Regards,
Cow_Bell
P.S. Edit: Thank you all for commenting! You've really shown how much the Dogecoin community has grown over the years and how big of a force it is to be reckoned with. I've had tip threads that would only garner 10's to a hundred people in the past. This outpouring of comments shows just what's happening. Sorry to anyone that didn't receive a tip beyond last night. I was CTRL+V mashing for about 1.5 hours last night. It about makes you delirious looking at usernames after a while, trying to remember if they've already left a top-level comment. It's crazy, I've not even had time to read through all the comments yet, especially with a busy holiday weekend and all. Needless to say, 99% of the energy in this thread was positive. Even the people that didn't get tipped. Thank you all for joining and keep an eye out for another tip thread. I wish you all a happy holiday season and new year!!!
If you want to register, know your balance, or withdrawal the Dogecoin, follow this link index - sodogetip (reddit.com) , click on whichever thing you want to know, and press send when it brings up the dialog to send the bot that particular message. You will receive a response quickly typically.
Hello folks!
I made an Ultraviolet Grasslands character sheet for online play (using the book's SEACAT rules).
It's made with Google Sheets (fully custmizable, editable in real time, independent by any VTT) and it's both in English and Italian.
I hope you like it!
You can grab it here for free (or if you'd like, you can support me with a donation) 👇
https://dismaster-frane.itch.io/uvg-seacat-online-character-sheet
A preview:
https://preview.redd.it/82ekdspu6oa81.jpg?width=1776&format=pjpg&auto=webp&s=ee824776a137d17c45e1628ee76748d583fe4e05
Chalcogen anions possess high polarizability leading to strong SHG response, but their high energy levels prevent us from pushing the optical windows into UV regions. The anion-directed band gap engineering associated with O/S anion order yields the novel UV nonlinear optical oxysulfide La3Ga3Ge2S3O10 with an exceptionally large band gap of 4.70 eV. The oxysulfide exhibits phase matching behaviors with SHG intensity twice that of KH2PO4.
Abstract
Chalcogenide-containing compounds have been widely studied as infrared nonlinear optical (NLO) materials. However, they have never been applied in the ultraviolet (UV) region owing to the high energy levels of chalcogen anions, leading to band gap narrowing. We report the synthesis of a new UV NLO oxysulfide La3Ga3Ge2S3O10 with an exceptionally wide band gap of 4.70 eV due to from the unique anion-ordered frameworks comprising 1D 1∞[(Ga3/5Ge2/5)3S3O3] triangular tubes and 0D (Ga3/5Ge2/5)2O7 dimers of corner-sharing (Ga/Ge)S2O2 and (Ga/Ge)O4 tetrahedra, respectively. Second harmonic generation (SHG) measurements revealed that La3Ga3Ge2S3O10 was phase matchable with twice the SHG response of KH2PO4. The results of theoretical calculations suggest that the strong SHG response is mainly attributable to the S-3p and O-2p orbitals in the occupied states. The anion-directed band-gap engineering may give insights into the application of NLO oxychalcogenides in the UV regions.
https://ift.tt/3iO2X61
So I purchased a bottle of Ultraviolet Man by Paco Rabanne, which I just LOVE, and I'd like to put a little bit of fragrance in a decant. Does somebody know if it's possible to remove the plastic cover from the bottle? It looks like it is, but I can't see the whole mechanism and I really don't want to break the amazing bottle in the process and then not being able to take the fragrance.
I'll leave a link just in case you don't realize what fragrance I'm talking about! https://www.fragrantica.es/perfume/Paco-Rabanne/Ultraviolet-521.html
Thank you for your help!
As title says. I am sick to death of the use of rape within novels simply as a plot device. In my opinion it is probably one of the most heinous acts that any person could commit yet there's a really disturbing trend of it just being thrown in to show how dark or mature a novel is. It's actually becoming cliche, which is something I shouldn't say but it's true.
The Outlander series is one of the worst examples of this.
This is not to say it can't be used ever but it is really getting overused by female and male writers alike. It makes me roll my eyes at how childish and immature these writers are, because 9/10 they're thinking that, "wow this is shocking" rather than actually considering the act itself in a respectful manner to real life victims.
Just had to get this off my chest. Is anybody noticing this trend and sick of it?
EDIT:
Thanks for rewards but assuming they're like Gold/Silver awards and you have to pay for them, you'd be better off supporting a sexual assault charity instead in your local area or country. Searching off Google here's one in my home country of the UK and one in the United States:
UK
https://www.victimsupport.org.uk/get-involved/donate/
USA:
https://www.rainn.org/
An 18‐membered‐ring boron oxide (18MR‐B2O3) is predicted with 1:1 ratio of [BO3] triangles and [B3O6] boroxol rings. Its van der Waals stackings, AA and AB, satisfy all the stringent criteria for deep‐ultraviolet nonlinear optical (DUV NLO) materials, exhibiting short second harmonic generation (SHG) phase‐matching (PM) wavelength and large SHG response.
Abstract
Deep‐ultraviolet nonlinear optical (DUV NLO) materials are attracting increasing attention because of their structural diversity and complexity. Using the two‐dimensional (2D) crystal structure prediction method combined with the first‐principles calculations, here we propose layered 18‐membered‐ring (18MR) boron oxide B2O3 polymorphs as high‐performance NLO materials. 18MR‐B2O3 with the AA and AB stackings are potential DUV NLO materials. The superior performing 18MR‐B2O3AB has an unprecedentedly high second harmonic generation coefficient of 1.63 pm V−1, the largest among the DUV NLO materials, three times larger than that of the advanced DUV NLO material KBe2BO3F2 and comparable to that of β‐BaB2O4. Its unusually large birefringence of 0.196 at 400 nm guarantees the phase‐matching wavelength λPM to reach this material's extreme absorption edge of ≈154 nm.
https://ift.tt/31foyLC
Deep‐ultraviolet nonlinear optical (DUV NLO) materials and their predictions are attracting increasing attention because of their structural diversity and complexity. Using the two‐dimensional (2D) crystal structure prediction method combined with the first‐principles calculations, here we discovered new van der Waals (VDW) layered 18‐membered‐ring (18MR) boron oxide B 2 O 3 polymorphs as high‐performance NLO materials. 18MR‑B 2 O 3 with the AA and AB stackings are potential DUV NLO materials. The superior performing AB stacking results in an unprecedentedly high second harmonic generation coefficient of 1.63 pm/V, the largest among the NLO materials with a DUV absorption edge and being three times larger than that of the advanced DUV NLO material KBe 2 BO 3 F 2 and comparable to that of β‑BaB 2 O 4 . The AB stacking’s unusually large birefringence of 0.196 at 400 nm guarantees the phase‐matching wavelength λ PM to reach this material’s extreme absorption edge of ~154 nm. The performance can be tuned by varying the layer stackings in 18MR‑B 2 O 3 , which provides an efficient approach for further enhancement. We predict that excellent NLO properties of VDW crystals can be explored in 2D and 3D with promising possibilities.
https://ift.tt/3uv8EtV
So I headed down to the library to see if they had a copy. The librarian said that my description rang a bell but she wasn’t sure if it was there or not.
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