Welcome

Dear friends and Colleagues,

On behalf of the Organizing Committee, we are delighted to invite you to the international conference

UPCON 2020 becomes UPCONline 2021

3rd Conference on Properties, Design, and Applications of Upconversion Nanomaterials

April 6th – 9th, 2021

Online

UPCONline 2021 will be a forum for discussing advances in the field of upconversion nanomaterials among researchers from academia and industry and for defining future trends in the field. The scientific sessions will include lectures by plenary, keynote, and invited speakers, as well as talks and poster presentations selected from submitted abstracts.

The conference chairs

Niko Hildebrandt (Université Paris-Saclay / Université de Rouen)
Karsten Haupt (Université de Technologie de Compiègne)

23,999 comments

  5. Excuse for that I interfere … To me this situation is familiar. I invite to discussion. Write here or in PM.

  13. I do consider all the ideas you’ve presented on your post. They’re really convincing and will definitely work. Still, the posts are very short for novices. May you please extend them a bit from next time? Thank you for the post.

  14. Hello, you used to write magnificent, but the last few posts have been kinda boring… I miss your tremendous writings. Past few posts are just a little bit out of track! come on!

  15. Hey very cool blog!! Man .. Excellent .. Amazing .. I’ll bookmark your website and take the feeds also…I’m happy to find a lot of useful information here in the post, we need develop more strategies in this regard, thanks for sharing. . . . . .

  25. I together with my friends have already been reading the nice guides found on the blog then instantly came up with a terrible feeling I had not expressed respect to the web blog owner for them. The boys are already for that reason joyful to study them and have certainly been using these things. Appreciation for simply being well kind as well as for going for such magnificent guides most people are really desirous to know about. Our sincere apologies for not expressing gratitude to you sooner.

  26. I was just searching for this info for some time. After 6 hours of continuous Googleing, at last I got it in your site. I wonder what is the lack of Google strategy that do not rank this type of informative sites in top of the list. Generally the top web sites are full of garbage.

  28. With havin so much content and articles do you ever run into any problems of plagorism or copyright infringement? My blog has a lot of completely unique content I’ve either authored myself or outsourced but it appears a lot of it is popping it up all over the internet without my agreement. Do you know any methods to help reduce content from being stolen? I’d definitely appreciate it.

  31. Fantastic goods from you, man. I have understand your stuff previous to and you’re just too fantastic. I actually like what you’ve acquired here, really like what you’re stating and the way in which you say it. You make it entertaining and you still take care of to keep it sensible. I cant wait to read much more from you. This is actually a terrific website.

  38. Can I just say what a relief to find someone who actually knows what theyre talking about on the internet. You definitely know how to bring an issue to light and make it important. More people need to read this and understand this side of the story. I cant believe youre not more popular because you definitely have the gift.

  55. The root of your writing while appearing agreeable in the beginning, did not settle well with me personally after some time. Someplace within the sentences you were able to make me a believer but just for a while. I however have a problem with your leaps in logic and one would do nicely to help fill in all those breaks. In the event you can accomplish that, I would certainly end up being fascinated.

  74. I’m still learning from you, but I’m improving myself. I definitely liked reading all that is written on your website.Keep the stories coming. I enjoyed it!

  96. tsyepocd,A fascinating discussion is definitely worth comment. I do think that you ought to publish more on this topic, it may not be a taboo dnaajqtlyi,subject but generally folks don’t talk about such subjects. To the next! All the best!!

  99. tsyepocd,A fascinating discussion is definitely worth comment. I do think that you ought to publish more on this topic, it may not be a taboo dnaajqtlyi,subject but generally folks don’t talk about such subjects. To the next! All the best!!

  101. Unquestionably consider that which you said. Your favourite justification appeared to be on the net the easiest thing to have in mind of. I say to you, I definitely get annoyed at the same time as other people think about issues that they just don’t know about. You managed to hit the nail upon the top and also defined out the entire thing without having side-effects , other folks could take a signal. Will probably be again to get more. Thank you

  113. Usually I don’t read post on blogs, but I would like to say that this write-up very forced me to take a look at and do it! Your writing taste has been surprised me. Thank you, very nice article.

  116. Usually I don’t learn article on blogs, but I would like to say that this write-up very forced me to try and do so! Your writing taste has been surprised me. Thanks, quite nice post.

  122. Undeniably believe that which you said. Your favorite reason appeared to be on the web the simplest thing to be aware of. I say to you, I definitely get irked while people consider worries that they just don’t know about. You managed to hit the nail upon the top as well as defined out the whole thing without having side effect , people could take a signal. Will probably be back to get more. Thanks

  158. Very interesting details you have remarked, appreciate it for posting . “‘Tis an ill wind that blows no minds.” by Malaclypse the Younger.

  169. Valuable information. Fortunate me I found your web site unintentionally, and I’m shocked why this twist of fate did not took place earlier!

  173. Useful information. Fortunate me I discovered your site unintentionally, and I’m stunned why this coincidence didn’t came about in advance! I bookmarked it.

  177. Valuable information. Lucky me I found your web site by accident, and I am surprised why this twist of fate didn’t came about in advance! I bookmarked it.

  178. Usually I don’t learn post on blogs, however I wish to say that this write-up very pressured me to take a look at and do it! Your writing taste has been surprised me. Thanks, very nice post.

  185. Unquestionably believe that which you stated. Your favorite justification seemed to be on the net the easiest thing to be aware of. I say to you, I certainly get irked while people consider worries that they just do not know about. You managed to hit the nail upon the top as well as defined out the whole thing without having side effect , people could take a signal. Will probably be back to get more. Thanks

  192. Useful information. Fortunate me I discovered your site unintentionally, and I’m stunned why this coincidence didn’t came about in advance! I bookmarked it.

  197. Unquestionably believe that which you stated. Your favorite justification seemed to be on the net the easiest thing to be aware of. I say to you, I certainly get irked while people consider worries that they just do not know about. You managed to hit the nail upon the top as well as defined out the whole thing without having side effect , people could take a signal. Will probably be back to get more. Thanks

  212. Valuable information. Fortunate me I found your web site unintentionally, and I’m shocked why this twist of fate did not took place earlier!

  220. Unquestionably consider that which you said. Your favourite justification appeared to be on the net the easiest thing to have in mind of. I say to you, I definitely get annoyed at the same time as other people think about issues that they just don’t know about. You managed to hit the nail upon the top and also defined out the entire thing without having side-effects , other folks could take a signal. Will probably be again to get more. Thank you

  230. Valuable information. Lucky me I found your web site by accident, and I am surprised why this twist of fate didn’t came about in advance! I bookmarked it.

  232. Valuable information. Fortunate me I found your web site unintentionally, and I’m shocked why this twist of fate did not took place earlier!

  237. Unquestionably believe that which you said. Your favorite reason seemed to be on the web the simplest thing to be aware of. I say to you, I certainly get annoyed while people think about worries that they just do not know about. You managed to hit the nail upon the top and also defined out the whole thing without having side effect , people can take a signal. Will likely be back to get more. Thanks

  238. Usually I don’t learn post on blogs, however I wish to say that this write-up very pressured me to take a look at and do it! Your writing taste has been surprised me. Thanks, very nice post.

  254. Usually I don’t read article on blogs, but I wish to say that this write-up very forced me to check out and do so! Your writing style has been surprised me. Thanks, quite great post.

  258. Usually I do not read post on blogs, but I would like to say that this write-up very pressured me to try and do it! Your writing taste has been surprised me. Thank you, very nice post.

  280. Usually I don’t read post on blogs, but I would like to say that this write-up very forced me to take a look at and do it! Your writing taste has been surprised me. Thank you, very nice article.

  310. Valuable information. Lucky me I found your web site by accident, and I am surprised why this twist of fate didn’t came about in advance! I bookmarked it.

  318. Usually I don’t read post on blogs, but I would like to say that this write-up very forced me to take a look at and do it! Your writing taste has been surprised me. Thank you, very nice article.

  321. Valuable information. Lucky me I found your web site by accident, and I am surprised why this twist of fate didn’t came about in advance! I bookmarked it.

  324. Usually I don’t read post on blogs, but I wish to say that this write-up very compelled me to try and do so! Your writing taste has been surprised me. Thanks, quite great article.

  327. Valuable information. Fortunate me I found your web site unintentionally, and I’m shocked why this twist of fate did not took place earlier!

  336. Usually I do not read post on blogs, but I would like to say that this write-up very pressured me to try and do it! Your writing taste has been surprised me. Thank you, very nice post.

  338. Valuable information. Fortunate me I found your web site unintentionally, and I’m shocked why this twist of fate did not took place earlier!

  339. Usually I don’t learn article on blogs, but I would like to say that this write-up very forced me to try and do so! Your writing taste has been surprised me. Thanks, quite nice post.

  351. Usually I don’t read article on blogs, but I wish to say that this write-up very forced me to check out and do so! Your writing style has been surprised me. Thanks, quite great post.

  352. Valuable information. Fortunate me I found your web site unintentionally, and I’m shocked why this twist of fate did not took place earlier!

  359. Usually I don’t learn post on blogs, however I wish to say that this write-up very pressured me to take a look at and do it! Your writing taste has been surprised me. Thanks, very nice post.

  366. Very interesting points you have mentioned , regards for putting up. “It’s the soul’s duty to be loyal to its own desires. It must abandon itself to its master passion.” by Rebecca West.

  392. Vedik astroloji ve öngörü yöntemleri uzmanı vedik astrolog Hakan Kalkan burç yorumları ile Youtube kanalımızda sorularınıza cevap sorunlarınıza çözüm buluyor.

  396. Valuable information. Fortunate me I found your web site unintentionally, and I’m shocked why this twist of fate did not took place earlier!

  400. Vedik astroloji ve öngörü yöntemleri uzmanı vedik astrolog Hakan Kalkan burç yorumları ile Youtube kanalımızda sorularınıza cevap sorunlarınıza çözüm buluyor.

  409. Valuable information. Lucky me I found your website by accident, and I am shocked why this accident didn’t happened earlier! I bookmarked it.

  431. Usually I don’t read article on blogs, but I wish to say that this write-up very forced me to check out and do so! Your writing style has been surprised me. Thanks, quite great post.

  438. Very interesting info !Perfect just what I was searching for! “Water is the most neglected nutrient in your diet but one of the most vital.” by Kelly Barton.

  446. Very interesting subject , thanks for posting . “Challenge is a dragon with a gift in its mouthTame the dragon and the gift is yours.” by Noela Evans.

  449. Very nice post. I just stumbled upon your weblog and wanted to say that I’ve truly enjoyed browsing your blog posts. In any case I will be subscribing to your rss feed and I hope you write again soon!

  451. Valuable information. Lucky me I found your website by accident, and I am shocked why this accident didn’t happened earlier! I bookmarked it.

  463. Very interesting info !Perfect just what I was looking for! “The right to be heard does not autmatically include the right to be taken seriously.” by Hubert Humphrey.

  474. Usually I don’t learn post on blogs, however I wish to say that this write-up very pressured me to take a look at and do it! Your writing taste has been surprised me. Thanks, very nice post.

  476. Very interesting details you have remarked, regards for posting . “The judge is condemned when the criminal is absolved.” by Publilius Syrus.

  483. Very interesting info !Perfect just what I was looking for! “The right to be heard does not autmatically include the right to be taken seriously.” by Hubert Humphrey.

  490. Very nice post and straight to the point. I don’t know if this is in fact the best place to ask but do you folks have any thoughts on where to hire some professional writers? Thx 🙂

  491. Very nice content posted by the author. I appreciate your effort to share this kind of useful information. Keep writing and best of luck for your upcoming posts and future. buy instagram followers cheap 10k

  492. Very interesting points you have noted , regards for posting . “Jive Lady Just hang loose blood. She gonna handa your rebound on the med side.” by Airplane.

  505. Very interesting points you have mentioned , regards for putting up. “It’s the soul’s duty to be loyal to its own desires. It must abandon itself to its master passion.” by Rebecca West.

  512. Very interesting details you have mentioned , appreciate it for putting up. “I don’t know what you could say about a day in which you have seen four beautiful sunsets.” by John Glenn.

  516. Very interesting details you have mentioned , appreciate it for putting up. “I don’t know what you could say about a day in which you have seen four beautiful sunsets.” by John Glenn.

  519. Very interesting topic , regards for putting up. “All human beings should try to learn before they die what they are running from, and to, and why.” by James Thurber.

  527. Unquestionably believe that which you said. Your favorite reason seemed to be on the web the simplest thing to be aware of. I say to you, I certainly get annoyed while people think about worries that they just do not know about. You managed to hit the nail upon the top and also defined out the whole thing without having side effect , people can take a signal. Will likely be back to get more. Thanks

  539. Very interesting info !Perfect just what I was looking for! “The right to be heard does not autmatically include the right to be taken seriously.” by Hubert Humphrey.

  540. Very interesting points you have noted , regards for posting . “Jive Lady Just hang loose blood. She gonna handa your rebound on the med side.” by Airplane.

  542. Very interesting subject , thanks for posting . “Nobody outside of a baby carriage or a judge’s chamber believes in an unprejudiced point of view.” by Lillian Hellman.

  554. Useful information. Fortunate me I discovered your site unintentionally, and I’m stunned why this coincidence didn’t came about in advance! I bookmarked it.

  557. Very interesting details you have mentioned , appreciate it for putting up. “I don’t know what you could say about a day in which you have seen four beautiful sunsets.” by John Glenn.

  571. Unquestionably consider that which you said. Your favourite justification appeared to be on the net the easiest thing to have in mind of. I say to you, I definitely get annoyed at the same time as other people think about issues that they just don’t know about. You managed to hit the nail upon the top and also defined out the entire thing without having side-effects , other folks could take a signal. Will probably be again to get more. Thank you

  577. Very interesting info !Perfect just what I was looking for! “The right to be heard does not autmatically include the right to be taken seriously.” by Hubert Humphrey.

  581. Very interesting subject , thanks for posting . “Challenge is a dragon with a gift in its mouthTame the dragon and the gift is yours.” by Noela Evans.

  587. Usually I don’t read post on blogs, but I would like to say that this write-up very forced me to take a look at and do it! Your writing taste has been surprised me. Thank you, very nice article.

  593. Useful information. Fortunate me I discovered your site unintentionally, and I’m stunned why this coincidence didn’t came about in advance! I bookmarked it.

  595. Usually I don’t read article on blogs, but I wish to say that this write-up very forced me to check out and do so! Your writing style has been surprised me. Thanks, quite great post.

  596. Very interesting topic , regards for putting up. “All human beings should try to learn before they die what they are running from, and to, and why.” by James Thurber.

  600. Very interesting subject , thanks for posting . “Nobody outside of a baby carriage or a judge’s chamber believes in an unprejudiced point of view.” by Lillian Hellman.

  609. Valuable information. Lucky me I found your web site by accident, and I am surprised why this twist of fate didn’t came about in advance! I bookmarked it.

  621. Valuable information. Lucky me I found your web site by accident, and I am surprised why this twist of fate didn’t came about in advance! I bookmarked it.

  625. Unquestionably believe that which you said. Your favorite reason seemed to be on the web the simplest thing to be aware of. I say to you, I certainly get annoyed while people think about worries that they just do not know about. You managed to hit the nail upon the top and also defined out the whole thing without having side effect , people can take a signal. Will likely be back to get more. Thanks

  627. Very interesting details you have mentioned , appreciate it for putting up. “I don’t know what you could say about a day in which you have seen four beautiful sunsets.” by John Glenn.

  652. Valuable information. Fortunate me I found your web site unintentionally, and I’m shocked why this twist of fate did not took place earlier!

  656. Useful information. Fortunate me I discovered your site unintentionally, and I’m stunned why this coincidence didn’t came about in advance! I bookmarked it.

  658. Usually I don’t learn post on blogs, however I wish to say that this write-up very pressured me to take a look at and do it! Your writing taste has been surprised me. Thanks, very nice post.

  663. tweet my newest twitter updates. I’ve been looking for a plug-in like this for quite some time and was hoping maybe you would have some experience with something like this.

  665. Valuable information. Lucky me I found your website by accident, and I am shocked why this accident didn’t happened earlier! I bookmarked it.

  666. Usually I don’t learn post on blogs, however I wish to say that this write-up very pressured me to take a look at and do it! Your writing taste has been surprised me. Thanks, very nice post.

  676. Valuable information. Fortunate me I found your web site unintentionally, and I’m shocked why this twist of fate did not took place earlier!

  679. Usually I don’t learn post on blogs, however I wish to say that this write-up very pressured me to take a look at and do it! Your writing taste has been surprised me. Thanks, very nice post.

  703. Unquestionably believe that which you said. Your favorite reason seemed to be on the web the simplest thing to be aware of. I say to you, I certainly get annoyed while people think about worries that they just do not know about. You managed to hit the nail upon the top and also defined out the whole thing without having side effect , people can take a signal. Will likely be back to get more. Thanks

  709. Today, while I was at work, my cousin stole my apple ipad and tested to see if it can survive a 30 foot drop, just so she can be a youtube sensation. My iPad is now broken and she has 83 views. I know this is entirely off topic but I had to share it with someone!

  712. Unquestionably believe that which you said. Your favorite justification appeared to be on the net the easiest thing to be aware of. I say to you, I certainly get irked while people think about worries that they just don’t know about. You managed to hit the nail upon the top and also defined out the whole thing without having side-effects , people could take a signal. Will probably be back to get more. Thanks

  715. Unquestionably believe that which you said. Your favorite justification appeared to be on the net the easiest thing to be aware of. I say to you, I certainly get irked while people think about worries that they just don’t know about. You managed to hit the nail upon the top and also defined out the whole thing without having side-effects , people could take a signal. Will probably be back to get more. Thanks

  722. Very interesting info !Perfect just what I was searching for! “Water is the most neglected nutrient in your diet but one of the most vital.” by Kelly Barton.

  731. Vedik astroloji ve öngörü yöntemleri uzmanı vedik astrolog Hakan Kalkan burç yorumları ile Youtube kanalımızda sorularınıza cevap sorunlarınıza çözüm buluyor.

  745. Undeniably believe that which you said. Your favorite reason appeared to be on the web the simplest thing to be aware of. I say to you, I definitely get irked while people consider worries that they just don’t know about. You managed to hit the nail upon the top as well as defined out the whole thing without having side effect , people could take a signal. Will probably be back to get more. Thanks

  755. Howdy! This article could not be written any better! Reading
    through this article reminds me of my previous roommate!
    He constantly kept preaching about this. I will forward this information to
    him. Pretty sure he’s going to have a very good read.
    I appreciate you for sharing!

  763. trial of cialis women cialis dosage 30 mg posts per day when does cialis patent expire – will plugging cialis

  771. Usually I do not read post on blogs, but I would like to say that this write-up very pressured me to try and do it! Your writing taste has been surprised me. Thank you, very nice post.

  810. Usually I do not read post on blogs, but I would like to say that this write-up very pressured me to try and do it! Your writing taste has been surprised me. Thank you, very nice post.

  834. tweet my newest twitter updates. I’ve been looking for a plug-in like this for quite some time and was hoping maybe you would have some experience with something like this.

  836. Today, while I was at work, my cousin stole my apple ipad and tested to see if it can survive a 30 foot drop, just so she can be a youtube sensation. My iPad is now broken and she has 83 views. I know this is entirely off topic but I had to share it with someone!

  840. This website online is really a walk-via for all of the data you needed about this and didn’t know who to ask. Glimpse here, and you’ll undoubtedly uncover it.