🦠🧬🔬Bacterial aggregate in Potomac River water!🦠🧬🔬 DNA staining imaged the fluorescence of ~1,600 bacteria! The diameter is 1,000 um. Aggregates allow bacteria to survive chemical, physical, & biological stress. #FluorescenceFriday #Microscope #Microbiology #Bacteria

🎇🧨🎆Waterworks for the 4th of July!🎆🧨🎇 Fluorescein in water & rhodamine B in isopropanol were dropped into water to visualize miscibility & diffusion. #FluorescenceFriday #SciArt #SciComm #Chemistry #4thofjuly #4thofJuly2026

😮Have you seen the creation of multinucleated cells?😮 I have & now you have! 🚦The sensor is the far-red (smURFP) & near-infrared (IFP2.0) fluorescent ubiquitination-based cell cycle indicator (FUCCI).🚦 #FluorescenceFriday #SciArt #SciComm

🍸I like my martini sublimed, not stirred.🍸 Fluorescein, sulforhodamine B, & dry ice. 🎂🥂🎉Cheers, it's my Birthday!!! 🎉🥂🎂 #FluorescenceFriday #RealTimeChem #SciArt #ChemArt #Chemistry #ChemTwitter

🐚🌊Always have a shell in your pocket & sand in your shoes!🌊🐚 #FluorescenceFriday

🌈Behold my electromagnetic spectrum!🌈 I made the spectrum by pouring 46 bottles of nail polish & fluorescent acrylic paint.💅🎨🖌️ #FluorescenceFriday #SciArt #SciComm

🟢💚Gigantic green fluorescent protein aggregates!💚🟢 I dried GFP slowly to remove the liquid. GFP aggregated and remained fluorescent after a year! The worm-like structures are 50-1,000X larger than a human cell! #FluorescenceFriday #FluorescentProtein #FluorescentProteins #GFP

🎨🖌️🧫🧬🦠Smurfette painted with E. coli expressing EGFP (yellow) or small Ultra-Red Fluorescent Protein (cyan).🦠🧬🧫🖌️🎨 The name smURFP is inspired by the purified protein. #FluorescenceFriday #SciArt #AgarArt #SciComm #FluorescentProtein #FluorescentProteins #smURFP

🌟🐛A fluorescent millipede!🐛🌟 The glowing millipede was found crawling in our building! #FluorescenceFriday #SciArt #Bugs #Insects

💖❤️The birth of a cell!❤️💖 🔬Happy Mother's Day!🔬 The movie shows the small Ultra-Red Fluorescent Protein (smURFP) & the Infrared Fluorescent Protein 2.0 (IFP2.0) far-red & near-infrared FUCCI. www.nature.com/articles/nme...

🌷🌼🌸🌻April showers bring May flowers!🌻🌸🌼🌷 Sarah Cachula painted the flowers using fluorescent paint.🖌️🎨 #FluorescenceFriday #SciArt

🌷🌼🌸🌻April showers bring May flowers! 🌻🌸🌼🌷 I painted the flowers with E. coli expressing EGFP & mTangerine.🖌️🎨 #FluorescenceFriday #SciArt #Bacteria #Microbiology #AgarArt #SciComm 🧬🦠🧫

🦋Monarch butterflies are fluorescent!🦋 Images by Chris Clemens. #FluorescenceFriday #SciComm

💎The fluorescence of petroleum inclusions in quartz crystals!💎 💎Petroleum fluoresces yellow-green under UV light. Many inclusions contain gas bubbles.💎 #FluorescenceFriday #SciComm #Rocks #Crystals

✏️📐🧰Bubble levels are fluorescent!🧰📐 #FluorescenceFriday

🟢The crystal structure of the green fluorescent protein, GFP! 🟢 The chromophore is yellow. The protein rigidizes the chromophore, releasing energy as fluorescence. 🎥I made the movie with UCSF Chimera & 1EMA.pdb. #FluorescenceFriday #FluorescentProtein #GFP #SciComm

🦂The haunting scorpion fluorescence! 🦂 The scorpions are embedded in resin. Fluorescence is produced with ultraviolet light, but most wavelengths produce fluorescence. We use them to test animal and wide-field fluorescence imagers. #FluorescenceFriday #SciComm #SciArt #BioArt

🔹🔷Fluorite Fluorescence!🔷🔹 George Stokes coined "fluorescence" in 1852 after fluorite, which glows blue under UV light. Fluorite is CaF2. Fluorescence is usually caused by yttrium, europium, or samarium impurities. #FluorescenceFriday #RealTimeChem #SciComm

🍀Happy St. Patrick's Day!🍀 This four-leaf clover has always brought me luck! #FluorescenceFriday #SciArt #SciComm #RealTimeChem #ChemArt #Chemistry #ChemTwitter #StPatricksDay

🍀Happy St. Patrick's Day!🍀 My favorite green is this fluorescein! #FluorescenceFriday #SciArt #SciComm #ChemArt #Chemistry #ChemTwitter #StPatricksDay

🔹🔷Crystal blue persuasion!🔷🔹 The brilliant blue fluorescent crystals formed after DNA purification from bacteria & human cells.🧬🦠 #FluorescenceFriday #RealTimeChem #ChemArt #Chemistry #ChemTwitter #SciArt #SciComm

❤️‍🔥The joy of bending light with glass vials! ❤️‍🔥 A UV LED light excited sulforhodamine B. #FluorescenceFriday #SciArt #SciComm #RealTimeChem

💕💘Happy Valentine’s Day! 💘💕 🎉🥂🎊Cheers to a magical night!🎊🥂🎉 #FluorescenceFriday #ValentinesDay #ChemArt #Chemistry #ChemTwitter #Science #SciArt #ScienceTwitter #ScienceValentines

💕💘YOU EXCITE ME! by Nick Uhlig.💘💕 Give them the card they really desire! #FluorescenceFriday #ValentinesDay #ChemArt #Chemistry #ChemTwitter #Science #ScienceValentines #ScienceTwitter

🌹Chemists prefer a fluorescent bouquet!🌹 🧪I excited rhodamine B in different solvents with UV light.🧪 💖Happy Valentine's Day!💖 #FluorescenceFriday #SciArt #ChemArt #Chemistry #ChemTwitter #ValentinesDay

Today, I would like to honor the memory of Roger Y. Tsien, born on February 1, 1952. His legacy lives with all who use his technologies, including calcium sensors, fluorescent proteins, the acetoxymethyl (AM) ester, & many more! #FluorescenceFriday www.nature.com/articles/nme...

Today, I would like to honor the memory of Roger Y. Tsien, born on February 1, 1952. His legacy lives with all who use his technologies, including calcium sensors, fluorescent proteins, the acetoxymethyl (AM) ester, & many more! #FluorescenceFriday www.nature.com/articles/nme...

✨💃Disco Ball!💃✨ A UV laser excites fluorescein, producing green fluorescence. Glitter scatters the light to demonstrate dynamic light scattering (DLS) for measuring particle size. #FluorescenceFriday #RealTimeChem #SciArt #SciComm #ChemArt

🎇🧨🎆Waterworks for the New Year!🎆🧨 I dropped fluorescein in water and rhodamine B in isopropanol into water to visualize miscibility and diffusion. #FluorescenceFriday #SciArt #SciComm #RealTimeChem #Chemistry #ChemTwitter

🎊🥂🎉Happy New Year!🎉🥂🎊 🍸I like my martini sublimed, not stirred. Fluorescein with dry ice.🍸 #SciArt #ChemArt #FluorescenceFriday

💫🧬🧫Fluorescent proteins make the holidays!🧫🧬💫 The Roger Y. Tsien lab (UCSD) made the wreaths with fluorescent proteins!🖌️🎨 #FluorescenceFriday #SciArt #AgarArt #MicrobialArt #BioArt #FluorescentProtein #FluorescentProteins

🎄A Fluorescent, Periodic Table Chemistree!🎄 The tree was dyed with strontium aluminate (SrAl₂O₄), decorated with 118 element ornaments, & topped with a periodic table. Happy Holidays! #FluorescenceFriday #SciArt #OChemistree #ChemisTree

🌟🎄A Fluorescent Chemistree for the Holidays!🎄🌟 🥼The tree is perfect for a day in the lab & a night on the town!💃 #Chemistree #FluorescenceFriday #RealTimeChem #SciArt #ChemArt #SciComm

In these times filled with anxiety, let this glow-in-the-dark fidget spinner soothe you. ߷😌 A UV laser pointer produced phosphorescence. #FluorescenceFriday #SciArt #Phosphorescence

🌞🍂❄️🌸 Behold, the four seasons!🌞🍂❄️🌸 🖌️🎨🪨I painted black rocks with fluorescent paint. UV light produced fluorescence.🖌️🎨🪨 #FluorescenceFriday #RockArt #SciArt

🐴Look at that horse!🐴 I painted the horse's face with E. coli expressing the fluorescent protein mCherry. 🧬🦠🧫🎠 #FluorescenceFriday #SciArt #Bacteria #Microbiology #AgarArt #SciComm

🌀🌪️A fluorescent cyclone in a beaker!🌪️🌀 Fluorescein fluorescence visualized the stirred liquid. #FluorescenceFriday #RealTimeChem #Chemistry #SciArt #SciComm

🎃Behold FrankenPumpkin!🎃 I filled a flat-bottom flask with chlorophyll extracted from algae.🦠 UV light produced the red fluorescence. Jordan Tanen drew the pumpkin face.🖊️ #FluorescenceFriday #SciArt #SciComm #RealTimeChem #ChemArt #Halloween2025 #Halloween

🎃A fluorescent turmeric jack-o'-lantern!🎃 I filled a flat-bottom flask with turmeric extract. Jordan Tanen drew the face.🖊️ #FluorescenceFriday #SciArt #SciComm #RealTimeChem #ChemArt

🎃Welcome to my fluorescent pumpkin patch!🎃 Jack-O-Lanterns are pipette tips filled with 😈 lucifer yellow, fluorescein, or rhodamine 101.🎃 🌝 #FluorescenceFriday #PipetteArt #SciArt #ChemArt #SciComm #HappyHalloween #Halloween 🎃

🎃💀Boys & girls of every age. Wouldn't you like to see something strange?💀🎃 🖌️🎨I painted Jack Skellington with E. coli expressing the small Ultra-Red Fluorescent Protein (smURFP).🧬🦠🧫 #TheNightmareBeforeChristmas #JackSkellington #SciArt #AgarArt #SciComm

👁️An eye for dye!👁️ Nadine Lo painted the image using malachite green, fluorescein, & sulforhodamine B. 🥽🧪⚗️🖌️🎨 #FluorescenceFriday #SciArt #SciComm #ChemArt #SciComm #HappyHalloween #Halloween

Phosphorescent sand excited by a UV laser pointer. Phosphorescence is from zinc sulfide (ZnS). Phosphorescence lasts longer than fluorescence. #FluorescenceFriday #Phosphorescence

💜💚🧡An optics demonstration!💚💜🧡 I filled bottles with fluorescein & sulforhodamine B. A UV laser pointer excites the dyes to fluoresce. #FluorescenceFriday #Optics #Photonics #Laser

💧◀️💧Diffusion in reverse!💧◀️💧 I added fluorescein & rhodamine B to a water bath under UV illumination. #FluorescenceFriday #SciArt #SciComm #RealTimeChem #Chemistry #Chemtwitter

🌊🧪Look at this Periodic Table beach towel!🧪🌊 😺⚗️Thank you, ThermoFisher Aspire Program!⚗️😺 #AspireMemberProgram #SciArt #SciComm #RealTimeChem #ChemArt #Chemistry #ChemTwitter

🔬🦠Bacterial chemotaxis!🦠🔬 Students imaged bacteria expressing the small Ultra-Red Fluorescent Protein (smURFP) to follow attraction to sugars & repulsion to glycine.🍬 #FluorescenceFriday #Microbiology #Chemotaxis #FluorescentProtein #SciComm

🌊The beautiful fluorescence of a sea anemone!🌊 #FluorescenceFriday #FluorescentProtein #Coral #Sea #Ocean

Today, I would like to honor the memory of Roger Y. Tsien, who died on August 24, 2016. His legacy lives with all who use his technologies, including calcium sensors, fluorescent proteins, the acetoxymethyl (AM) ester, & many more! #FluorescenceFriday www.nature.com/articles/nme...