We used this enhanced absorption as a tool to optically detect ammonia at near-to-room temperatures (100 C) which is unusual for oxide-based sensors.
This is so exciting because it opens up new possibilities in optical sensing of hazardous gases!
@dellagasperalab.bsky.social
Professor and research group leader in #chemistry and #nanoscience based at RMIT University in Melbourne, Australia. #nanomaterials & coatings for #optoelectronics, #sensing & #energy generation
We used this enhanced absorption as a tool to optically detect ammonia at near-to-room temperatures (100 C) which is unusual for oxide-based sensors.
This is so exciting because it opens up new possibilities in optical sensing of hazardous gases!
Here we used TiO2 and Au nanocrystals and assembled them into coatings of precise thickness and surface coverage, obtaining structures that when deposited on a mirror, were able to absorb broadly in the visible an near infrared, with a peak absorption of light of 95% at 530 nm.
28.05.2025 23:52 โ ๐ 0 ๐ 0 ๐ฌ 1 ๐ 0They are able to absorb a large fraction of visible light, with a reduced thickness. The most adopted structure is a bottom metal mirror, an oxide spacer, and an outer layer of Au nanoparticles, which Daniel Gomez pioneered using vacuum-based depositions - see here:
pubs.acs.org/doi/10.1021/...
In this work, we present the fabrication of #plasmonic super absorbers using wet chemical methods, and their use as optical gas sensors. Super absorbers are nanostructures based on a mirror-spacer-nanoparticle architecture, and they function through optical interference and field localization.
28.05.2025 23:52 โ ๐ 0 ๐ 0 ๐ฌ 1 ๐ 0๐จ New paper alert!๐จ
Plasmonic Super Absorbers used as optical gas sensors
pubs.acs.org/doi/full/10....
Great collaboration with Daniel Gomez and Alex Martucci, led by Michele Rigon during his visit to Melbourne
#chemsky๐งช
#ozchem #nanotechnology #Chemistry #nanomaterials #RMIT
A short ๐งตbelow๐๐
And it's finally out!!
Read it here:
pubs.acs.org/doi/full/10....
#chemsky๐งช
#ozchem #nanotechnology #Chemistry #nanomaterials #RMIT
Finally, we showcase the role of annealing temperature and atmosphere, achieving record photoelectrochemical performance for water oxidation.
This is very exciting, and we are now exploring doping and heterostructure formation, so heads up, more studies on this material are coming out soon!
First, we present a simple synthesis for CuWO4, highlighting the role that water plays in the complexation of metal ions within the precursor solution.
Then we discovered that Cu exhibits an unusually high oxidation state in CuWO4 (higher than +2), compensated with a reduced tungsten valency.
๐จNew paper out in #ChemRxiv๐จ
Copper Tungstate (CuWO4) thin films can split water very effectively under sunlight!
Great work by PhD student Kanishk, and many contributors from within and outside the group!
Check it out! ๐
doi.org/10.26434/che...
#ozchem #chemsky ๐งช
Short thread๐งต below๐๐
Table from page 25 of the proposed restructure of ARC grants. Back text on white background, with the table delineated by a dark blue header row and alternating light and very light blue rows.
The ARC Board has proposed a major shake-up of the National Competitive Grants Program โถ๏ธ www.arc.gov.au/engage-us/co...
I've only skimmed so far, but they propose reducing 13 grant schemes to 6, with intent & scope in the table๐
Submissions are being accepted in response until 13 April. Get to it!
Hi Australian Researchers. I have a plan. Let's thank the amazing @arc-tracker.bsky.social for a decade of selfless work by nominating them for a Eureka Prize (Leadership in science). Are you with me? If so, repost this. Please also reply and state your support for this quest. We can do this people.
04.02.2025 06:12 โ ๐ 76 ๐ 48 ๐ฌ 8 ๐ 4Thank you!
11.12.2024 20:08 โ ๐ 0 ๐ 0 ๐ฌ 0 ๐ 0post a PERFECT album from the 90s that isn't Nirvana or Pearl Jam
11.12.2024 09:59 โ ๐ 1 ๐ 0 ๐ฌ 1 ๐ 0What a way to wrap up the year! 2 #ARC #DP EoI submitted yesterday and a #research #award today! Time to crack open a cold one!
11.12.2024 05:31 โ ๐ 0 ๐ 0 ๐ฌ 0 ๐ 0Thank you!
29.11.2024 22:52 โ ๐ 1 ๐ 0 ๐ฌ 0 ๐ 0You don't need to be a rocket scientist or a brain surgeon to see why Bluesky is the place to be.
But welcome scientists, thank you for joining us! ๐
Could you please add me to this list? thank you! ๐
28.11.2024 21:59 โ ๐ 0 ๐ 0 ๐ฌ 1 ๐ 0Hi, I would love to be added to this list!
28.11.2024 21:57 โ ๐ 1 ๐ 0 ๐ฌ 0 ๐ 0Hi there, I am quite new here, but I am a chemist and I'd love to join the community! This is me:
www.rmit.edu.au/contact/staf...
www.linkedin.com/in/enricodel...
These optimal conditions allowed to increase the hematite thickness to improve light absorption, without affecting negatively charge transport across the material.
This study sets clear guidelines for producing high performance Fe2O3 photoanodes for sustainable #green #hydrogen production
In this work we present a simple, water based method to deposit phase-pure hematite Fe2O3 coatings for water oxidation.
Lead author Triet discovered a strong interplay between dopants and annealing conditions, finding an optimal combination to achieve high performance. ๐ฒ
๐จNew paper out in #ChemRxiv ๐จ
Mammoth study on the role of doping and annealing for Fe2O3 photoanodes for #water #splitting. Short thread๐งต below๐๐
#ozchem #nanotechnology #Chemistry #nanomaterials #RMIT
chemrxiv.org/engage/chemr...
Good luck everyone!
25.11.2024 01:01 โ ๐ 0 ๐ 0 ๐ฌ 0 ๐ 0Thanks Kevin!
21.11.2024 19:02 โ ๐ 0 ๐ 0 ๐ฌ 0 ๐ 0Hi everyone here on Bluesky! What better way to start my feed than to share the news that I have been promoted to full professor effective 1 January 2025!! A massive THANK YOU to my group, my colleagues and my collaborators who supported me along the way, and to the reviewers for their endorsement!
19.11.2024 02:23 โ ๐ 9 ๐ 1 ๐ฌ 1 ๐ 0I just made the transition here, could you add me to the list? Thanks!
18.11.2024 23:31 โ ๐ 1 ๐ 0 ๐ฌ 0 ๐ 0