Physician physicist | Postdoc @SantiagoLab | BioE PhD @PrakashLab @Stanford | MD @ NTU | ultrafast biophysics | fluid mechanics | microbiology
Stanford, CA
Joined February 2020
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Humbled and grateful to receive this award. Many thanks to Prof. Juan Santiago's guidance in this work.
#JFM Emerging Scholar Best Paper 2023: cup.org/3Z37Xcv
Read one of the papers chosen as an honourable mention 'Taylor dispersion in arbitrarily shaped axisymmetric channels.'
by Runner-up: Ray Chang
ALT Certificate background in blue with text that reads 'Runner-up Honorable Mention, Emerging Scholar Best Paper Prize.'
This approach also allows us to solve the inverse problem analytically for the first time. In the video, you are seeing a channel that can keep the axial variance of solute zone constant as it travels through the channel. The channel shape is solved by an ODE
In this work, we thus reduced the partial differential equation governing solute dispersion into two coupled ordinary differential equations that can be solved for the mean position and solute zone width based on channel geometry.
Despite its importance, there was no analytical work towards Taylor dispersion in an arbitrarily shaped axisymmetric channel. This hindered our ability to design channels that can give rise to desired spatial distribution of solute zone variance.
In this work, We studied the Taylor dispersion in arbitrarily shaped axisymmetric channels, a solute dispersion phenomenon crucial for the design of microfluidic chips and drug delivery system.
a very exciting combination of fluid mechanics + thermodynamics, and how physical approach can help infer evolutionary adaptations. Very great work @QingZha82204335
I am thrilled to share our new work: "Frozen Flow - Gliding Motility of Diatoms in the Ice"! ❄️ Check it out here: biorxiv.org/content/10.1101/…
#ice #glidingmotility #microbiology #diatoms #extremebiology
Ray Chang retweeted
Deep sea phytoplankton observed ballooning to 6x their size in order to float to the surface to capture sunlight.
@CurrentBiology
Learn more: cell.com/current-biology/ful…
@Planktonico @ManuPra18599785 @PrakashLab
ALT One big and one little Pyrocystis noctiluca CREDIT Prakash lab Stanford University
Ray Chang retweeted
Free scientific illustrations for biologists! 😍
@NIH has released a library of 500+ free scientific illustrations to create figures, presentations, and illustrations!
all freely available in the public domain.
Retweet and spread the message!
bioart.niaid.nih.gov/
Ray Chang retweeted
Check self-deployable, adaptive robots (arxiv.org/abs/2410.02974) based on Contracting-Cord Particle Jamming (doi.org/10.1039/D4MH00584H). These robots hold potential for exploration in remote, complex areas. Accepted to ISRR2024.
#softrobotics #AdaptiveRobotics #ParticleJamming
Ray Chang retweeted
Invited talks by Michael Shelley (@Michael80429772) and Senthil Arumugam (@dopaminator). Session organizers: @koslovergroup, @ajay_gopinathan, @RayChang0612. Submit abstracts to session #04.01.04:
summit.aps.org/attend/sortin…
Ray Chang retweeted
Interested in how cells transport signals and material among their own compartments or to other cells? Join us at the 2025 APS March Meeting Focus Session on Intra- and inter-cellular transport! Abstracts due Oct 25.
Ray Chang retweeted
Most birds use a funny running style: grounded running. It's a paradox: GR costs more energy than normal running, but animals usually minimize costs.
Do birds waste energy? We resolve this with a model of the emu (the best bird).
1st PhD chapter, out in @ScienceAdvances
1/17
Ray Chang retweeted
What if you could deliver molecular tools directly into oocytes without microinjection? In our new paper, online today @Dev_journal (doi.org/10.1242/dev.202857), we introduce VitelloTag, a new cargo delivery tool to enable injection-free genome editing. 👇Read on for a short 🧵
Ray Chang retweeted
Congrats to all the Prakazoans who celebrated today with doctoral degrees. @Eliott_Flaum @RayChang0612 Anton Molina Jerome Nowak @hongquan_li
Since I could not do the formal hooding ceremony, we ended up doing a hooding on Kilo Moana (first graduation on a boat I am told)
Ray Chang retweeted
The tiny predator Lacrymaria olor owes its shape-shifting ability to an “origami-like” cellular architecture, a new Science study finds. The results offer a glimpse into geometrical control of behavior in single cells.
Learn more in this week's issue: scim.ag/7eu
Ray Chang retweeted
Thrilled to announce that I will be joining the faculty of Polymer Science and Engineering at the University of Massachusetts Amherst in 2025 @UMassAmherst! And SO grateful for the many friendships/future collabs that budded (across many universities!) this interview season. 1/11
It has been an amazing 5 years with you @PrakashLab! Hard to summarize what I learned from you -- from science to curiosity and your commitment to society. The story goes on. Praise the Lord!
(1/2) Congrats Dr. Dr. Ray Chang @RayChang0612 (not a typo, he is also a MD) - spectacular thesis defense from the lab on “ultrafast cellular biophysics”.. the breadth of ideas and discoveries (a new non-dimensional number and scaling law, discovery of topological damping..
Ray Chang retweeted
Our new paper in @elife: Fluid mechanics of luminal transport in actively contracting endoplasmic reticulum doi.org/10.7554/eLife.93518.…
Purely theory/simulation-based exploration of (im)possible ways to generate mixing currents inside the ER network
Ray Chang retweeted
Commonly used parametric and non-parametric statistical tests!
Image credits: Unknown
@AcademicChatter @OpenAcademics @PhDVoice @PhDfriends #Statistics
