One of the 1st things I did @molecularfndry after COVID shutdown was to look into telepresence robots, from @DoubleRobotics & @OhmniLabs. Basically iPads on wheels; via web browser, you roll up to someone in lab and talk! Who won the battle of the telepresence bots? Read on!
We looked at the @DoubleRobotics Double 3 & @OhmniLabs Supercam (old name). We couldn't find any other reasonable competitors. All other options were, out of stock, DIY kits not fit for deployment, or expensive stuff for hospitals. (2/6)
In March 2020, the Ohmni was $2000 (the cost of a laptop). Double3 was 2x the price, fittingly. We wanted to use these telepresence robots initially for remote monitoring (when no one was in lab) and later for hybrid/remote work, like User training. (3/6)
Disclosure: No one was compensated in any way for me to say any of this and views are entirely my own! (4/6)
@DoubleRobotics took 3+ months to ship, due to international supply chain issues. @OhmniLabs took 1 month (they 3D print most of their robots in the Bay Area). Both companies prioritized medical customers.
What do you do with nanocrystals that just can't relax (vibrationally)?
Check our our new paper in @angew_chem on lanthanide-doped potassium lead halide nanocrystals with ultra-low phonon energies and nonlinear, photon-avalanche-like emission: doi.org/10.1002/anie.2…
(1/n) 🧵
Why do we care about the energy/frequency of the phonons in nanocrystals? Phonon emission is one of the main nonradiative relaxation pathways for excited states in nanocrystals, esp. lanthanide-doped ones. Lower phonon E means exponentially less likely vibr. relaxation. (2/n)
We synthesized for the first time Ln-doped KPb2Cl5 and KPb2Br5 nanocrystals and showed that they had some of the lowest observed phonon energies in nanocrystals. (3/n)
Practicing a conference talk, defense, or job talk?
As the saying goes, "Practice doesn't make perfect, perfect practice makes perfect."
Here are 10 #ProTips for practicing talks: 🧵
The short version:
1.Don't practice talks straight through. Target small chunks.
2.Incorporate feedback. Practice until you get it right
3.Make practice harder than the real thing
4.Practice transitions between slides/ideas
6.Practice relaxing!
7.Practice timing!
8.Simulate the practice environment
9.Finalize slide edits 24 h before your talk
10.Practice questions!
Quite a few people ask me about buying large automated systems and other high value equipment ($250k - $millions). Here's a thread with my top 10 tips for large equipment purchases:
Here's the summary if you don't like reading: 1. Do a live demo 2. Talk to current users 3. Build relationships with vendors early. Find people you trust. 4. Don't try to make everyone happy. 5. Before talking to vendors, write an RFP w/ acceptance tests
6. Never tell the vendor your budget 7. Only negotiate with decision makers 8. Only pay $$$ when you are totally happy. Don't pay up front. 9. Learn how to read a contact. Structure your contract to avoid problems down the road. 10. Budget for facilities reno & service contracts