Paul S. Weiss
@pswnano.bsky.social
Nanoscience, science, engineering, medicine, science communication, science policy, travel
UCLA prof, husband, father, all comments are my own
UCLA prof, husband, father, all comments are my own
We developed a mineral (ZnO) #sunscreen that reduces white cast, described in bit.ly/ZnOTet25 ACS Materials Letters @pubs.acs.org & bit.ly/ZnOtetUCLA by @uclahealth.org & bit.ly/WH26sun by Women's Health Magazine.
Led by AJ Addae, collaborating with Profs. Justin Caram & Yogendra Kumar Mishra
Led by AJ Addae, collaborating with Profs. Justin Caram & Yogendra Kumar Mishra
Flame-Synthesized Zinc Oxide Tetrapods for Photoprotection in Sunscreen Formulations
ZnO nanoparticles are widely used in sunscreen formulations due to their strong light absorption in the ultraviolet (UV) and ease of synthesis. Here, we explore flame-synthesized tetrapod-shaped zinc ...
bit.ly
February 9, 2026 at 4:15 PM
We developed a mineral (ZnO) #sunscreen that reduces white cast, described in bit.ly/ZnOTet25 ACS Materials Letters @pubs.acs.org & bit.ly/ZnOtetUCLA by @uclahealth.org & bit.ly/WH26sun by Women's Health Magazine.
Led by AJ Addae, collaborating with Profs. Justin Caram & Yogendra Kumar Mishra
Led by AJ Addae, collaborating with Profs. Justin Caram & Yogendra Kumar Mishra
Reposted by Paul S. Weiss
UCLA researchers (@pswnano.bsky.social @cnsiatucla.bsky.social @uclacb.bsky.social) developed a mineral sunscreen that reduces the white cast of zinc oxide by reshaping it into microscopic tetrapods—maintaining strong UV protection + better matching natural skin tones ☀️
cnsi.ucla.edu/february-3-2...
cnsi.ucla.edu/february-3-2...
February 3, 2026 | Mineral sunscreen that reduces white cast developed by UCLA researchers - California NanoSystems Institute
UCLA researchers have developed a mineral sunscreen formulation that significantly reduces the white, chalky cast that keeps many people from wearing sun protection daily. For decades, dermatologists ...
cnsi.ucla.edu
February 5, 2026 at 9:37 PM
UCLA researchers (@pswnano.bsky.social @cnsiatucla.bsky.social @uclacb.bsky.social) developed a mineral sunscreen that reduces the white cast of zinc oxide by reshaping it into microscopic tetrapods—maintaining strong UV protection + better matching natural skin tones ☀️
cnsi.ucla.edu/february-3-2...
cnsi.ucla.edu/february-3-2...
We are looking forward to having Prof. Nasim Annabi @uclasamueli.bsky.social give today's @uclacb.bsky.social Physical Chemistry Seminar
January 12, 2026 at 6:31 PM
We are looking forward to having Prof. Nasim Annabi @uclasamueli.bsky.social give today's @uclacb.bsky.social Physical Chemistry Seminar
October 20, 2025 at 2:45 AM
Congratulations to our friend & former @uclacb.bsky.social colleague Prof. Omar Yaghi on winning the @nobelprize.bsky.social in chemistry for his groundbreaking #nano work on MOFs
October 8, 2025 at 7:22 PM
Congratulations to our friend & former @uclacb.bsky.social colleague Prof. Omar Yaghi on winning the @nobelprize.bsky.social in chemistry for his groundbreaking #nano work on MOFs
Reposted by Paul S. Weiss
UCLA spinout Entropic Biosciences, co-founded by
@pswnano.bsky.social & alum Amir Nasajpour (PhD ’23), awarded $200K from BARDA/BTI VANGUARD to develop a high-throughput 3D skin model. www.chemistry.ucla.edu/news/ucla-sp...
@pswnano.bsky.social & alum Amir Nasajpour (PhD ’23), awarded $200K from BARDA/BTI VANGUARD to develop a high-throughput 3D skin model. www.chemistry.ucla.edu/news/ucla-sp...
August 27, 2025 at 3:26 PM
UCLA spinout Entropic Biosciences, co-founded by
@pswnano.bsky.social & alum Amir Nasajpour (PhD ’23), awarded $200K from BARDA/BTI VANGUARD to develop a high-throughput 3D skin model. www.chemistry.ucla.edu/news/ucla-sp...
@pswnano.bsky.social & alum Amir Nasajpour (PhD ’23), awarded $200K from BARDA/BTI VANGUARD to develop a high-throughput 3D skin model. www.chemistry.ucla.edu/news/ucla-sp...
@uclacb.bsky.social PhD student AJ Addae will be speaking this morning at an @acs.org meeting Presidential event #cosmetics #chemistry #nano @ucla.edu Room 140B
August 18, 2025 at 1:07 PM
@uclacb.bsky.social PhD student AJ Addae will be speaking this morning at an @acs.org meeting Presidential event #cosmetics #chemistry #nano @ucla.edu Room 140B
Reposted by Paul S. Weiss
Congratulations to Prof. Paul S. Weiss (@pswnano.bsky.social), who has been elected a Fellow of the European Academy of Sciences – Materials Science Division! www.chemistry.ucla.edu/news/paul-s-...
August 1, 2025 at 9:24 PM
Congratulations to Prof. Paul S. Weiss (@pswnano.bsky.social), who has been elected a Fellow of the European Academy of Sciences – Materials Science Division! www.chemistry.ucla.edu/news/paul-s-...
Coming up shortly, a discussion of and roundtable of\n the impact of the National #Nanotechnology Initiative as part of the quadrennial review #nano #NNI bit.ly/NNI25w
July 17, 2025 at 4:38 PM
Coming up shortly, a discussion of and roundtable of\n the impact of the National #Nanotechnology Initiative as part of the quadrennial review #nano #NNI bit.ly/NNI25w
I’ll be speaking at @nyutandon.bsky.social engineering on Tuesday & @nyu.edu chemistry on Wednesday #nano
July 7, 2025 at 9:52 AM
I’ll be speaking at @nyutandon.bsky.social engineering on Tuesday & @nyu.edu chemistry on Wednesday #nano
I will be giving a plenary talk Monday morning at bit.ly/TCW25 #TechConnect in Austin - see you there!
June 8, 2025 at 3:51 PM
I will be giving a plenary talk Monday morning at bit.ly/TCW25 #TechConnect in Austin - see you there!
We are hosting Prof. Jungwon Park @seoulnatluniv.bsky.social today @uclacb.bsky.social - sharing his pioneering work in liquid-phase electron microscopy #nano
June 2, 2025 at 11:13 PM
We are hosting Prof. Jungwon Park @seoulnatluniv.bsky.social today @uclacb.bsky.social - sharing his pioneering work in liquid-phase electron microscopy #nano
We have Prof. Khalid Salaita @emoryuniversity.bsky.social speaking in biophysics today @ucla.edu on the mechanobiology of immune cells #nano
May 23, 2025 at 11:19 PM
We have Prof. Khalid Salaita @emoryuniversity.bsky.social speaking in biophysics today @ucla.edu on the mechanobiology of immune cells #nano
Chris Chang @christhechang.bsky.social @princeton.edu is giving our student-invited chemistry seminar @uclacb.bsky.social @ucla.edu
May 14, 2025 at 11:10 PM
Chris Chang @christhechang.bsky.social @princeton.edu is giving our student-invited chemistry seminar @uclacb.bsky.social @ucla.edu
Here is an exciting new paper on 3D printing in vivo with ultrasound with @pswnano.bsky.social group alumna Prof. Elham Davoodi, now @utah.edu, from her work at @caltech.edu with @weigaolab.bsky.social bit.ly/InVsound3D @science.org
Imaging-guided deep tissue in vivo sound printing
Three-dimensional printing offers promise for patient-specific implants and therapies but is often limited by the need for invasive surgical procedures. To address this, we developed an imaging-guided...
bit.ly
May 8, 2025 at 6:16 PM
Here is an exciting new paper on 3D printing in vivo with ultrasound with @pswnano.bsky.social group alumna Prof. Elham Davoodi, now @utah.edu, from her work at @caltech.edu with @weigaolab.bsky.social bit.ly/InVsound3D @science.org
Prof. Andrea Liu @upenn.edu returns to @uclacb.bsky.social to give our physical chemistry seminar
May 5, 2025 at 11:13 PM
Prof. Andrea Liu @upenn.edu returns to @uclacb.bsky.social to give our physical chemistry seminar
We are celebrating Prof. Naomi Halas @riceuniversity.bsky.social with a symposium @upenn.edu in honor her Franklin Institute Medal in chemistry #nano
April 30, 2025 at 1:21 PM
We are celebrating Prof. Naomi Halas @riceuniversity.bsky.social with a symposium @upenn.edu in honor her Franklin Institute Medal in chemistry #nano
I am looking forward to giving the chemistry seminar tomorrow (Monday) afternoon @tulaneu.bsky.social in New Orleans and visiting @tulanemedicine.bsky.social & Tony Hu on Tuesday! #nano
April 27, 2025 at 7:33 PM
I am looking forward to giving the chemistry seminar tomorrow (Monday) afternoon @tulaneu.bsky.social in New Orleans and visiting @tulanemedicine.bsky.social & Tony Hu on Tuesday! #nano
AJ, Jennifer, & Michelle presenting our group poster at the UCLA Microbiome Center Symposium @cnsiatucla.bsky.social
April 24, 2025 at 10:03 PM
AJ, Jennifer, & Michelle presenting our group poster at the UCLA Microbiome Center Symposium @cnsiatucla.bsky.social
I will be speaking this afternoon at the MRS @materials-mrs.bsky.social meeting in Seattle on our collaborations in Africa and the developing world #nano #materials #albinism #SCD
April 7, 2025 at 9:06 PM
I will be speaking this afternoon at the MRS @materials-mrs.bsky.social meeting in Seattle on our collaborations in Africa and the developing world #nano #materials #albinism #SCD
I am looking forward to giving the Mitsch Lectures at & visiting Hamline University today (Thursday) & tomorrow - bit.ly/Mitsch25
March 27, 2025 at 2:57 PM
I am looking forward to giving the Mitsch Lectures at & visiting Hamline University today (Thursday) & tomorrow - bit.ly/Mitsch25
I will give my final talk of this @acs.org meeting today (Wednesday) on cage-molecule self-assembly & precise building blocks in Pacific 24 of the San Diego Marriot #nano
Don't miss AJ Addae's talk on a novel ZnO tetrapod-based sunscreen on Thursday @ 8:50 AM in Marina G, also @ San Diego Marriot
Don't miss AJ Addae's talk on a novel ZnO tetrapod-based sunscreen on Thursday @ 8:50 AM in Marina G, also @ San Diego Marriot
March 26, 2025 at 3:25 PM
I will be speaking this afternoon at the @acs.org meeting in San Diego in a symposium celebrating Tom Mallouk, chair of the @upenn.bsky.social chemistry department & my former colleague @pennstatechemistry.bsky.social #nano - SDCC 28A, 4:20 PM
March 25, 2025 at 9:12 PM
I will be speaking this afternoon at the @acs.org meeting in San Diego in a symposium celebrating Tom Mallouk, chair of the @upenn.bsky.social chemistry department & my former colleague @pennstatechemistry.bsky.social #nano - SDCC 28A, 4:20 PM
See you at the spring @acs.org meeting in San Diego, starting early this morning! Here are our @uclacb.bsky.social, @uclasamueli.bsky.social, @cnsiatucla.bsky.social group presentations on nanoscience, chemistry, physics, materials, chirality, sustainability, & skincare
March 23, 2025 at 3:25 PM
See you at the spring @acs.org meeting in San Diego, starting early this morning! Here are our @uclacb.bsky.social, @uclasamueli.bsky.social, @cnsiatucla.bsky.social group presentations on nanoscience, chemistry, physics, materials, chirality, sustainability, & skincare