Lewis MacKenzie
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lemackz.bsky.social
Lewis MacKenzie
@lemackz.bsky.social
Upconversion nanoparticles, optical biosensors, chiral spectroscopy, scicomm, blood oxygen | bass player | uranium glass collector

Group website: www.mackenzie-lab.org

he/him | Glasgow | Expect typos
Pinned
The UK's first dedicated #upconversion spectrometer is now up and running in my research group - high upconversion sensitivity detection, lifetime and quantum yield* capabilities. Please get in touch if you are interested in collaborating!

*Full upconversion QY coming later 2026
Reposted by Lewis MacKenzie
Great aurora visible in Dwingeloo yesterday!
January 20, 2026 at 10:08 AM
Reposted by Lewis MacKenzie
More aurora tonight at Loch Calder, far north of Scotland
January 19, 2026 at 11:16 PM
Excitation map of victorian (1890s) Davidson of Gateshead pearline uranium glass. Sweet-spots for fluorescence are 325 nm and 410 nm, emission peaking at 532 nm. #uraniumglass
January 19, 2026 at 5:46 PM
Fellow #lanthanide botherers, don't miss the new data on lanthanide transition and spectra published late 2025. This work superceeds the old experiments and has very nice creative-common licenced figures! #chemsky

www.nature.com/articles/s41...
Electronic energy levels and optical spectra of trivalent lanthanide ions in water – Ce(III), Pr(III), Nd(III), Sm(III), Eu(III), Gd(III), Tb(III), Dy(III), Ho(III), Er(III), Tm(III), and Yb(III) - Na...
Dieke diagrams have formed the basis for describing the electronic structure of f-block ions, but experimental methods have improved since their development. Here, the authors use experimental data to...
www.nature.com
January 19, 2026 at 1:04 PM
Just checked my Facebook 'memories' from 2011. I'm moaning about being rejected from a science communication PhD program because I didn't have a humanities background 🤦

Anyway, here's my paper on science podcasts that's been cited 164 times 😉

royalsocietypublishing.org/rsos/article...
Science podcasts: analysis of global production and output from 2004 to 2018
Abstract. Since 2004, podcasts have emerged as a decentralized medium for science communication to the global public. However, to date, there have been no
royalsocietypublishing.org
January 14, 2026 at 4:52 PM
Cool new fourier framework mapping the 3D chirality of supramolecular systems - from nanoparticles to DNA and proteins! #Chemsky #Chirality

www.biorxiv.org/content/10.6...
January 12, 2026 at 5:34 PM
Why are nanoparticles cool? Reason #9874: you can make them "wear" cancer cell membranes to evade the immune system and deliver drugs to those nasty cancer cells! #UCNPs #upconversion

pubs.acs.org/doi/full/10....
Biomimetic Upconverting Nanoplatforms for Glioblastoma Bioimaging and Targeted Therapy
Glioblastoma (GB) is an aggressive and fast-progressing brain tumor with high recurrence rates and poor patient survival. Its resistance to conventional treatments and limited therapeutic options highlight the urgent need for innovative strategies to improve outcomes. In this scenario, we present a multifunctional biomimetic nanoplatform designed for targeted therapy and bioimaging of GB. The system comprises core–shell upconverting nanoparticles (UCNPs) coated with a mesoporous silica (UCNP@mSiO2), loaded with the chemotherapeutic agent temozolomide (TMZ), and cloaked with U251 GB cell membranes (BUCNP:TMZ). The mesoporous silica shell enhances stability and drug-loading capacity, while the membrane coating improves colloidal stability, immune evasion, and homotypic targeting. The UCNP core enables real-time near-infrared (NIR) imaging under 980 nm excitation. BUCNP:TMZ exhibits an average diameter of approximately 80 nm, a TMZ encapsulation efficiency of 58.5%, and drug complete release after 4 h at pH 5.5. Cellular internalization studies demonstrated preferential uptake of BUCNP:TMZ in homologous U251 GB cells compared to nonparental U87 and nonmalignant HDFn cells. Cell-viability assays showed a concentration-dependent cytotoxic response, with BUCNP:TMZ reducing U251 viability by over 50% at 50 μg mL–1, while showing minimal toxicity toward HDFn fibroblasts. This multifunctional nanoplatform integrates targeted delivery, NIR bioimaging, and sustained drug release into a single construct, offering a promising approach for GB theranostics.
pubs.acs.org
January 12, 2026 at 4:58 PM
Upconversion nanoparticles are as tough as nails - you can even use them to tag explosives, as set out in this paper by the group of Hirsch! #UCNPs #upconversion

pubs.acs.org/doi/full/10....
January 12, 2026 at 4:38 PM
Reposted by Lewis MacKenzie
In happier news, it's been a great week for learning strange new things about the universe. A few highlights:

The Rubin Observatory opened its eyes & immediately discovered 1900 asteroids, including the fastest-spinning large asteroid (once every 1.88 minutes!). 🧪🔭

noirlab.edu/public/news/...
January 11, 2026 at 12:31 AM
Reposted by Lewis MacKenzie
The @realmsunknown.bsky.social subgenre for this week is endings! Good ones, bad ones, surprise ones!

Talk to me about your most memorable endings in sci fi and fantasy.
January 10, 2026 at 5:52 AM
Reposted by Lewis MacKenzie
Funded #PhD opportunity in my group at University of Strathclyde, Glasgow, starting October 2026. The funding covers UK tuition fees and stipend. Applicants must be eligible for UK student status.

www.findaphd.com/phds/project...
Accessible Synthesis of Lanthanide-Doped Upconversion Nanoparticles at University of Strathclyde on FindAPhD.com
PhD Project - Accessible Synthesis of Lanthanide-Doped Upconversion Nanoparticles at University of Strathclyde, listed on FindAPhD.com
www.findaphd.com
January 6, 2026 at 2:39 PM
Funded #PhD opportunity in my group at University of Strathclyde, Glasgow, starting October 2026. The funding covers UK tuition fees and stipend. Applicants must be eligible for UK student status.

www.findaphd.com/phds/project...
Accessible Synthesis of Lanthanide-Doped Upconversion Nanoparticles at University of Strathclyde on FindAPhD.com
PhD Project - Accessible Synthesis of Lanthanide-Doped Upconversion Nanoparticles at University of Strathclyde, listed on FindAPhD.com
www.findaphd.com
January 6, 2026 at 2:39 PM
The Royal Society Netwton International fellowship for non-UK early career researchers opens soon.

If anyone in the world of #upconversion is interested, please let me know because I can host.

royalsociety.org/grants/newton-international/
Newton International Fellowships | Royal Society
This fellowship is for non-UK scientists who are at an early stage of their research career and wish to conduct research in the UK.
royalsociety.org
January 5, 2026 at 4:49 PM
Interesting to see fairly efficient 660 nm (red) to 380 nm (UV) photonic upconversion in #UCNPs. I wonder if it will work in water?

pubs.acs.org/doi/full/10....
Efficient Ultraviolet and Violet Upconversion Emissions in Highly Er3+-Doped Nanoparticles under 660 nm Excitation
Ultraviolet- and violet-emitting upconversion nanoparticles (UCNPs) are promising for applications in photobiology, photochemistry, solid-state lasing, and energy storage. However, their use has been ...
pubs.acs.org
January 5, 2026 at 4:03 PM
The UK's first dedicated #upconversion spectrometer is now up and running in my research group - high upconversion sensitivity detection, lifetime and quantum yield* capabilities. Please get in touch if you are interested in collaborating!

*Full upconversion QY coming later 2026
January 5, 2026 at 4:02 PM
First day back in office, to find out I got a peer-review invitation on *Christmas Day* and that the request has been withdrawn because I didn't reply soon enough....
January 5, 2026 at 10:57 AM
A beautiful example of Victorian 'pearline' uranium glass, made by Davidson of Gateshead in England. This is the 'Lady Chippendale' pattern, circa 1890s. #uraniumglass
January 2, 2026 at 12:55 PM
Just realized that an analogy for quantum superfluorescence in #upconversion nanoparticles is a like bag of microwave popcorn where every kernel pops nearly simultaneously, instead of individually over minutes! 🍿

#ucnps #photonics #chemsky
January 2, 2026 at 12:00 PM
I've upgraded one of my uranium glass cabinets with USB powered UV spotlights #uraniumglass #fluoresence
December 27, 2025 at 3:28 PM
New fluorescent demigorgon just dropped
Felt a little festive at the microscope this morning for #FluorescenceFriday 🎄

Here’s the nervous system of a juvenile sea star ⭐️

Green = acetylated tubulin, red = nuclei

Happy holidays!
December 24, 2025 at 12:59 PM
Reposted by Lewis MacKenzie
@realmsunknown.bsky.social deep dive this week is Christmas!

Sci fi and fantasy that has Christmas themes or anti Christmas themes! Tell me your faves.
December 23, 2025 at 12:19 AM
Reposted by Lewis MacKenzie
This is rad. 🧪
Take a journey through time down a new NSF COLDEX ice core borehole just completed by the team in #Antarctica!

If you’re at #AGU25 stop by the COLDEX booth in the Exhibit Hall to talk to COLDEX team members from across the 15-institution center funded by NSF! @agu.org Follow us on IG @ coldex_stc
December 15, 2025 at 2:37 AM
Big scenes in the Stranger Things finale when it turns out the big bad was Maxwell's Demon
Maxwell's Demon was born OTD in 1867 in a letter to Peter Guthrie Tait. M called it only a “finite being.”

Lord Kelvin named it a “demon,” presumably referring to its apparent unearthly power to (locally and temporarily) violate the second law of thermodynamics.

🦫🦋 #HistSTM #philsci 🧪
December 12, 2025 at 10:48 AM
Reposted by Lewis MacKenzie
The @realmsunknown.bsky.social guest for this week is @joznorris.bsky.social! The subgenre deep dive will be Choose Your Own Adventure.

Give us your recommendations, whether it’s books, games, tv, movies or “other”!
November 28, 2025 at 10:05 PM