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William H. Grover

@wgrover.bsky.social

620 followers 470 following 320 posts

Associate Professor of Bioengineering at the University of California, Riverside | loves microfluidics, sensors, and weird computers | hates fake medicines | groverlab.org

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William H. Grover @wgrover.bsky.social · Sep 3

Our latest preprint on medRxiv: Identifying counterfeit medications using a $4 optical sensor meant for use in toy robots. 🧪💊🤖

www.medrxiv.org/content/10.1...

Our prototype Disintegration Fingerprinting apparatus. (A) A servo drops a single pill into a water-filled cup atop a magnetic stirrer. The pill begins to disintegrate into particles (B), and an infrared optical sensor on the side of the cup detects the light reflected by individual particles as they pass the sensor (C). As the particles disintegrate and dissolve further, the number of particles detected changes (D). A plot of peak count vs. time (E) serves as a “Disintegration Fingerprint” for this pill.

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Reposted by William H. Grover

Polly Fordyce @pollyfordyce.bsky.social · 1d

Come join us at @stanford-chemh.bsky.social! I feel incredibly lucky to have launched my career here -- it is a fantastic place to do bold interdisciplinary science surrounded by creative & supportive colleagues. Applications are due 10/15/2025 -- DM me if you have questions about the search!

Sarafan ChEM-H @stanford-chemh.bsky.social · Aug 26

Open faculty position!
We're seeking applicants for a tenure-track faculty position at the junior level (Assistant or untenured Associate Professor) with research programs that exist at the interface between molecular science and computation. Apply here: stanford.io/45MF3Qa

Open Faculty Position: Assistant or Associate (Untenured) Professor

Application deadline: 11:55 PM on Wednesday, October 15, 2025

Sarafan ChEM-H is seeking candidates with research programs that exist at the interface between molecular science and computation.

Click the link above to learn more & apply!

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William H. Grover @wgrover.bsky.social · 4d

Looks like you can still find Letraset rub-on chemical structures on eBay; I might need to buy a sheet just to show the young'uns how good they have it with ChemDraw.

Reposted by William H. Grover

Burrito Justice @burritojustice.bsky.social · 7d

quick while the government is shut down let’s all switch to metric

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William H. Grover @wgrover.bsky.social · 12d

Congratulations!!!

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William H. Grover @wgrover.bsky.social · 14d

Yeah somehow I missed this gesture. Glad to know about it - seems like Apple might have been able to make it more discoverable somehow…

William H. Grover @wgrover.bsky.social · 14d

I didn’t know that! Actually it looks like dragging up anywhere on the bottom toolbar brings up the tabs?

Reposted by William H. Grover

Prakash Lab at Stanford @prakashlab.bsky.social · 16d

For last 10 years - we have worked with thousands of organizations around the world helping support them in integrating foldscope programs.

To bring in a new cohort of organizations - we are re-launching “fast and curious” 2025 edition - apply and get a Foldscope trainer and Foldscopes for free!

TeamFoldscope @teamfoldscope.bsky.social · 18d

🔬 Free microscopes + teacher training!

📅 Applications are now open. To apply, visit www.foldscope.com or scan the QR code (video)

✉️ Any questions? Email us at [email protected]

#stem #education #science #teachers #training #free #microscopy #educators #professionaldevelopment #microscope

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William H. Grover @wgrover.bsky.social · 22d

My favorite Robert Redford movie, though lately it feels like a relic from a time long gone.

Still from "All the President's Men" showing Dustin Hoffman and Robert Redford as Carl Bernstein and Bob Woodward investigating the Watergate scandal.

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William H. Grover @wgrover.bsky.social · 26d

❤️❤️❤️ these posters in the Geology building at UC Riverside ❤️❤️❤️

Seriously, why aren't we putting messages like these everywhere? I'd happily chip in some pro-NSF and pro-NIH billboards? 🧪

The internet is the
greatest single scientific innovation of the 20th century
Brought to you by NSF

NSF Funds
Supercomputing
Facilities
Bringing You:
Weather Forecasts
Heat Advisories

NSF and NASA
Maintain GPS
Satelites
Bringing You:
Navigation Apps

NSF Funds
Supercomputing
Facilities
Bringing You:
Surf Forecasts
Severe Weather Alerts

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William H. Grover @wgrover.bsky.social · Sep 6

I've never been to one of these events, so my knowledge of them is based on their depictions in episodes of "Mr. Bean" and "Wallace and Gromit," which I assumed were satires.

But now I'm questioning that assumption...

Gromit measuring his prized marrow (whatever a marrow is?)

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William H. Grover @wgrover.bsky.social · Sep 5

Is this a thing? Because someone I don't know just offered me roast beef:

Reposted by William H. Grover

Siavash Ahrar @siavasha.bsky.social · Sep 5

Happy to share our new pre-print using microfluidics to look into flow response of Hydra.

Figure from the manuscript - demonstrating the system to investigate flow response of Hydra

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William H. Grover @wgrover.bsky.social · Sep 5

Beautiful work! The prospect of adding drugs or other chemical inputs and measuring the resulting effects on the Hydra's response to flow (as you noted in the Discussion) is particularly exciting. Maybe a tool for aquatic toxicity studies?

William H. Grover @wgrover.bsky.social · Sep 3

The fingerprints aren't perfectly unique (we had mismatches for 10% of the pills we tested) and this isn't telling you chemical info like e.g. LIBS would. But for a really cheap way to fingerprint a suspect pill and compare it to a known-good sample, hopefully the technique can be useful.

William H. Grover @wgrover.bsky.social · Sep 3

That's right - we're detecting pill particles as they pass the sensor on the side of the cup, so that's influenced by the rate at which the pill disintegrates, the size of the particles formed, whether or not they eventually dissolve away, etc.

William H. Grover @wgrover.bsky.social · Sep 3

"Disintegration Fingerprinting" converts the disintegration and dissolution of a pill into a digital fingerprint. We used it to test 32 different drug products and found that it correctly identified 90% of these pills. 🧪

Read more at www.medrxiv.org/content/10.1...

Disintegration Fingerprints for three pills (orange, blue, and green) of each of 32 different drug products.

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William H. Grover @wgrover.bsky.social · Sep 3

Our latest preprint on medRxiv: Identifying counterfeit medications using a $4 optical sensor meant for use in toy robots. 🧪💊🤖

www.medrxiv.org/content/10.1...

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William H. Grover @wgrover.bsky.social · Aug 27

😍😍😍 Physical controls instead of touchscreens, and I'm confident it won't try to shove AI down my throat. 😍😍😍

Present & Correct @presentcorrect.bsky.social · Aug 27

Memorette, a 1960s shopping list tablet. www.presentandcorrect.com/blogs/blog/m...

No batteries needed.

A plastic book like structure showing as open, inside is a dark brown interface that has white type. A thorough list of groceries is written and beside each one is a small orange switch that slides to indicate a purchase.

the same item but shot at an angle and close up.

William H. Grover @wgrover.bsky.social · Aug 22

I shudder to think about how many people will read this and ask, “What’s a Rolodex?” or worse yet “What’s a typewriter?”

(btw I’m Team Typewriter)

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William H. Grover @wgrover.bsky.social · Aug 18

"The Weight of a Cell" by Niko McCarty in Asimov Press 🧪

(Includes a project I was involved with back at MIT 15 years ago)

The Weight of a Cell

A single E. coli bacterium weighs about one picogram, 60 million times less than a grain of sand. But how do we know?

www.asimov.press

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William H. Grover @wgrover.bsky.social · Aug 16

Queen Anne Cottage at the LA County Arboretum

William H. Grover @wgrover.bsky.social · Aug 16

Plumeria at LA County Arboretum

Reposted by William H. Grover

Javier Apfeld @javierapfeld.bsky.social · Aug 13

The funds are approved! We're hiring a postdoc to build a CRISPRa toolkit to identify new aging mechanisms in C. elegans.

Email or DM me to find out more. Please share & repost!

a man in a suit has a name tag on his jacket that says dennis

Alt: a man in a suit has a name tag on his jacket that says dennis

media.tenor.com

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Reposted by William H. Grover

ProPublica @propublica.org · Aug 12

NEW: In June, ProPublica reported that the FDA has given more than 20 foreign factories a special pass to send drugs to the U.S. even though they were made at plants the agency had banned.

Today, we’re publishing a list of those exempted drugs.

The FDA Let Substandard Factories Ship These Medications to the U.S.

ProPublica identified more than 150 products that were exempted from import bans since 2013. Our list provides the names of the drugs or ingredients and their manufacturers, many of which are no longe...

www.propublica.org

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William H. Grover @wgrover.bsky.social · Aug 9

You can do the same with the two blue dots ^ (you might need to cock your head to the right a bit) and you'll hopefully see a tall thin rectangle of copy/pasted material.

The copy/pasted regions look "still" or "calm" against the noisy background of un-copied stuff. (3/3)