James Gilchrist (Gilchrist Lab)
@gilchristlab.bsky.social
Laboratory for Particle Mixing and Self-Organization, Lehigh University: particles, fluids, self-assembly, rheology, coatings. #InclusionMatters. he/him.
https://www.gilchristlab.info, https://www.linkedin.com/in/jamesgilchristphd
https://www.gilchristlab.info, https://www.linkedin.com/in/jamesgilchristphd
Pinned
Gilchrist Laboratory
November 4th, 2024: TABOOS launched to the ISS!
Thermophoresis in quiescent non-Newtonian fluids for bioseparations It's out of this world!!! (learn more here)
www.gilchristlab.info
The easiest “hello world” I can think of is dropping a link to my website here.
www.gilchristlab.info
www.gilchristlab.info
In Harry Potter, when Voldemort attacks Hogwarts, the faculty didn’t have a dozen meetings to argue what to do. They knew just what to do.
So do you.
So do you.
a man in a suit is standing in the dirt with a light coming out of his mouth .
ALT: a man in a suit is standing in the dirt with a light coming out of his mouth .
media.tenor.com
February 22, 2025 at 10:21 PM
In Harry Potter, when Voldemort attacks Hogwarts, the faculty didn’t have a dozen meetings to argue what to do. They knew just what to do.
So do you.
So do you.
Largest magnitude alumni “gifts” to Yale:
$250M - Johnson
$160M - Bass
$100M - Broad Foundation
($180M/yr) - Vance and NIH
Just the facts here.
$250M - Johnson
$160M - Bass
$100M - Broad Foundation
($180M/yr) - Vance and NIH
Just the facts here.
February 16, 2025 at 3:51 AM
Largest magnitude alumni “gifts” to Yale:
$250M - Johnson
$160M - Bass
$100M - Broad Foundation
($180M/yr) - Vance and NIH
Just the facts here.
$250M - Johnson
$160M - Bass
$100M - Broad Foundation
($180M/yr) - Vance and NIH
Just the facts here.
Through our careers as scientists, there have been and will be several challenges that arise. How we weather challenges and persevere is more important than the short-term losses.
Contact your professional network and reach out to support each other. We are in this together.
Contact your professional network and reach out to support each other. We are in this together.
February 10, 2025 at 4:28 PM
Through our careers as scientists, there have been and will be several challenges that arise. How we weather challenges and persevere is more important than the short-term losses.
Contact your professional network and reach out to support each other. We are in this together.
Contact your professional network and reach out to support each other. We are in this together.
Kudos to the Grammys this year. Seriously talented folks.
(I have a 16 yo daughter, so I actually know some of the winners this year!)
(I have a 16 yo daughter, so I actually know some of the winners this year!)
February 3, 2025 at 2:51 AM
Kudos to the Grammys this year. Seriously talented folks.
(I have a 16 yo daughter, so I actually know some of the winners this year!)
(I have a 16 yo daughter, so I actually know some of the winners this year!)
Got vaccinated today (tetanus and shingles). Modern medicine.
Just search "pictures of tetanus and shingles victims" and you won't hesitate to get yours.
Just search "pictures of tetanus and shingles victims" and you won't hesitate to get yours.
January 31, 2025 at 6:41 PM
Got vaccinated today (tetanus and shingles). Modern medicine.
Just search "pictures of tetanus and shingles victims" and you won't hesitate to get yours.
Just search "pictures of tetanus and shingles victims" and you won't hesitate to get yours.
Proud of my minor part of a nice collaboration with the Reichmanis Group @lehighengineers.bsky.social on how to optimize QD-LEDs from potential roll-to-roll processes.
Congrats to graduate student Yiman Xu for leading the effort and engaging me on this cool project!
pubs.acs.org/doi/10.1021/...
Congrats to graduate student Yiman Xu for leading the effort and engaging me on this cool project!
pubs.acs.org/doi/10.1021/...
Landau–Levich Scaling for Optimization of Quantum Dot Layer Morphology and Thickness in Quantum-Dot Light-Emitting Diodes
Quantum dot (QD) light-emitting diodes (QLEDs) are promising candidates for next-generation displays because of their high efficiency, brightness, broad color gamut, and solution-processability. Large-scale solution-processing of electroluminescent QLEDs poses significant challenges, particularly concerning the precise control of the active layer’s thickness and uniformity. These obstacles directly impact charge transport, leading to current leakage and reduced overall efficiency. Blade-coating is a prevalent and scalable solution processing technique known for its speed and minimal waste. Additionally, it allows for continuous “roll-to-roll” processing, making it highly adaptable in various applications. In this study, we demonstrate the precise control of blade speed in the Landau–Levich regime to create a uniform QD emission layer, using a commercial CdSe/ZnS QD as a representative example. QDs assemble into different morphologies on glass and the underlying layers of the QLED device due to variations in interaction energy. The QD film thickness can be modified from monolayer to multilayer by adjusting blade speed, which can be predicted by fitting the Landau–Levich–Derjaguin theory. The optimal speed at 7 mm/s results in a QD film with a surface coverage of around 163% and low roughness (1.57 nm mean square height). The QLED external quantum efficiency (EQE) of approximately 1.5% was achieved using commercially available CdSe/ZnS QDs with low photoluminescence quantum yield (PLQY), and an EQE of around 7% has been obtained using lab-made InP/ZnSe/ZnS QDs having a solution PLQY of 74%. All-blade-coated CdSe-QLEDs are further demonstrated by adopting the optimized speed for the QD layer. This method demonstrates significant potential for developing low-cost, reproducible, and scalable QLED technologies with uniform emission characteristics and low-waste production.
pubs.acs.org
January 29, 2025 at 9:59 PM
Proud of my minor part of a nice collaboration with the Reichmanis Group @lehighengineers.bsky.social on how to optimize QD-LEDs from potential roll-to-roll processes.
Congrats to graduate student Yiman Xu for leading the effort and engaging me on this cool project!
pubs.acs.org/doi/10.1021/...
Congrats to graduate student Yiman Xu for leading the effort and engaging me on this cool project!
pubs.acs.org/doi/10.1021/...
Just putting this here:
January 29, 2025 at 7:39 PM
Just putting this here:
Reposted by James Gilchrist (Gilchrist Lab)
The Future of Rheology Seminar Series invites abstract submissions to present in this prestigious virtual series which highlights research from students, postdocs, and professionals advancing rheology. Speakers have the opportunity to present at the 2026 Annual Meeting for a chance to win prizes!
January 27, 2025 at 6:51 PM
The Future of Rheology Seminar Series invites abstract submissions to present in this prestigious virtual series which highlights research from students, postdocs, and professionals advancing rheology. Speakers have the opportunity to present at the 2026 Annual Meeting for a chance to win prizes!
The Justice40 initiative was just suspended within the Department of Energy. Here is a map of communities it served to enhance energy and water access:
www.energy.gov/sites/defaul...
www.energy.gov/sites/defaul...
January 27, 2025 at 5:59 PM
The Justice40 initiative was just suspended within the Department of Energy. Here is a map of communities it served to enhance energy and water access:
www.energy.gov/sites/defaul...
www.energy.gov/sites/defaul...
Clearly the time to avoid lines at the Costco gas pumps is during the Eagles playoff games.
a philadelphia eagles logo with the words " it 's a win " below it
ALT: a philadelphia eagles logo with the words " it 's a win " below it
media.tenor.com
January 26, 2025 at 11:25 PM
Clearly the time to avoid lines at the Costco gas pumps is during the Eagles playoff games.
Celebrating the end of winter break skiing in Steamboat, CO! See you at the start of Spring 2025 semester next week!
@lehighengineers.bsky.social
@lehighengineers.bsky.social
January 17, 2025 at 4:55 PM
Celebrating the end of winter break skiing in Steamboat, CO! See you at the start of Spring 2025 semester next week!
@lehighengineers.bsky.social
@lehighengineers.bsky.social
Reposted by James Gilchrist (Gilchrist Lab)
The Internet is so good for stuff like mutual aid and keep people informed amid crisis. Like, when I feel despair--and these days I often do--it's a small encouragement to be reminded that when we are proximal to suffering, we are capable of extraordinary generosity.
January 11, 2025 at 4:18 PM
The Internet is so good for stuff like mutual aid and keep people informed amid crisis. Like, when I feel despair--and these days I often do--it's a small encouragement to be reminded that when we are proximal to suffering, we are capable of extraordinary generosity.
End of Semester:
Pulling hair out trying to balance research deadlines, grading, committee meetings and wondering why I do this to myself.
Week before semester starts:
Sure, I'll sign up for everything that looks interesting!
Pulling hair out trying to balance research deadlines, grading, committee meetings and wondering why I do this to myself.
Week before semester starts:
Sure, I'll sign up for everything that looks interesting!
January 10, 2025 at 2:29 PM
End of Semester:
Pulling hair out trying to balance research deadlines, grading, committee meetings and wondering why I do this to myself.
Week before semester starts:
Sure, I'll sign up for everything that looks interesting!
Pulling hair out trying to balance research deadlines, grading, committee meetings and wondering why I do this to myself.
Week before semester starts:
Sure, I'll sign up for everything that looks interesting!
“The benefits extend far beyond just a bigger paycheck, creating positive effects that can last throughout your career and life.”
www.forbes.com/sites/chrism...
www.forbes.com/sites/chrism...
New Research Reveals True Value Of College Education
Research shows higher ed offers broader financial and social gains than just bigger paychecks. However, results vary widely by field and institution.
www.forbes.com
December 30, 2024 at 10:05 AM
“The benefits extend far beyond just a bigger paycheck, creating positive effects that can last throughout your career and life.”
www.forbes.com/sites/chrism...
www.forbes.com/sites/chrism...
A nice summary of the current academic climate (mostly focused on Ivy-plus schools that have been under fire).
time.com/7203960/what...
time.com/7203960/what...
What Critics Get Wrong About the Ivy League
Higher education must address the ideological orthodoxy of political correctness.
time.com
December 29, 2024 at 4:04 PM
A nice summary of the current academic climate (mostly focused on Ivy-plus schools that have been under fire).
time.com/7203960/what...
time.com/7203960/what...
Joshua Tree, CA.
Crazy beautiful!
Crazy beautiful!
December 28, 2024 at 6:55 PM
Joshua Tree, CA.
Crazy beautiful!
Crazy beautiful!
Happy Holidays and Merry Christmas to all who celebrate!
December 25, 2024 at 5:14 PM
Happy Holidays and Merry Christmas to all who celebrate!
One of my favorite mathematical tools.
Some of you might enjoy my lectures on "asymptotics and perturbation methods". youtube.com/playlist?lis...
These are ingenious methods for approximating the solutions to integrals and differential equations by exploiting the presence of a small or large parameter in the problem.
These are ingenious methods for approximating the solutions to integrals and differential equations by exploiting the presence of a small or large parameter in the problem.
Asymptotics and perturbation methods - Prof. Steven Strogatz - YouTube
This is the playlist for an applied math course on asymptotics and perturbation methods, offered by Prof. Steven Strogatz at Cornell University in Spring 202...
youtube.com
December 22, 2024 at 9:47 PM
One of my favorite mathematical tools.
Reposted by James Gilchrist (Gilchrist Lab)
Interviewer: can you explain this gap in your resume?
Chemical engineer: It can be made dimensionless by scaling it by dividing a characteristic length squared divided by diffusion (L^2/D) OR multiplying it by the reaction rate and dividing by a characteristic concentration (k/C).
Chemical engineer: It can be made dimensionless by scaling it by dividing a characteristic length squared divided by diffusion (L^2/D) OR multiplying it by the reaction rate and dividing by a characteristic concentration (k/C).
Interviewer: can you explain this gap in your resume?
Chemical engineer: van der Waals forces.
Chemical engineer: van der Waals forces.
Interviewer: can you explain this gap in your resume?
Graphic designer: white space is beautiful.
Graphic designer: white space is beautiful.
December 22, 2024 at 12:54 PM
Interviewer: can you explain this gap in your resume?
Chemical engineer: It can be made dimensionless by scaling it by dividing a characteristic length squared divided by diffusion (L^2/D) OR multiplying it by the reaction rate and dividing by a characteristic concentration (k/C).
Chemical engineer: It can be made dimensionless by scaling it by dividing a characteristic length squared divided by diffusion (L^2/D) OR multiplying it by the reaction rate and dividing by a characteristic concentration (k/C).
We all have our versions of these. This one is a beauty!
Lunch for mentoring or simple collegiality has never been discouraged. In fact, I tell junior faculty they can text or call -anytime- they have a “weird” question when navigating academia. No judgement, only honest answers.
Lunch for mentoring or simple collegiality has never been discouraged. In fact, I tell junior faculty they can text or call -anytime- they have a “weird” question when navigating academia. No judgement, only honest answers.
The holiday season is a time for trotting out old favorites. Y'all voted on which old favorite I should trot out when I hit 5k followers and you chose: the story of when I was told I couldn't have lunch with junior colleagues. So here we go! I call this little ditty "Lunch Is Illegal."
December 22, 2024 at 12:45 PM
We all have our versions of these. This one is a beauty!
Lunch for mentoring or simple collegiality has never been discouraged. In fact, I tell junior faculty they can text or call -anytime- they have a “weird” question when navigating academia. No judgement, only honest answers.
Lunch for mentoring or simple collegiality has never been discouraged. In fact, I tell junior faculty they can text or call -anytime- they have a “weird” question when navigating academia. No judgement, only honest answers.
Seen
December 19, 2024 at 9:18 PM
Seen
Sick kiddos
Dead car battery
Grades due in 2 days.
Tis’ the season…
Dead car battery
Grades due in 2 days.
Tis’ the season…
a young boy is writing on a piece of paper with the words so many papers written on it
ALT: a young boy is writing on a piece of paper with the words so many papers written on it
media.tenor.com
December 19, 2024 at 1:50 PM
Sick kiddos
Dead car battery
Grades due in 2 days.
Tis’ the season…
Dead car battery
Grades due in 2 days.
Tis’ the season…
All I want for Xmas…
December 18, 2024 at 1:20 AM
All I want for Xmas…