If you have an ACS member number, please enter it here so we can link this account to your membership. (optional)

ACS values your privacy. By submitting your information, you are gaining access to C&EN and subscribing to our weekly newsletter. We use the information you provide to make your reading experience better, and we will never sell your data to third party members.


Biological Chemistry

Chemistry In Pictures

Chemistry in Pictures: Flower gel

by Brianna Barbu
March 14, 2023


A top-down view of a flask containing clear, colorless gel with an impression of a flower in it.
Credit: Sudeep Samanta

Leftover polyacrylamide gel from an electrophoresis procedure formed this flower shape thanks to some funky monomer diffusion. Sudeep Samanta, a PhD candidate at the Indian Institute of Technology Bombay, noticed the unusual formation as he was disposing of unused gel he had prepared for the experiment. Gel electrophoresis separates molecules such as peptides and nucleic acids by size using an electric current to pull them though a porous gel. Samanta uses the technique regularly in his research. In the experiment that gave rise to this floral arrangement, he used the method to investigate the DNA-cleaving ability of a copper-peptide-ligand conjugate he developed to selectively recognize and break up a type of DNA structure called a G-quadruplex.

Submitted by Sudeep Samanta

Do science. Take pictures. Win money. Enter our photo contest here.

Click here to see more Chemistry in Pictures.


This article was updated on March 14, 2023, to clarify that the Indian Institute of Technology branch that Sudeep Samanta works at is the Indian Institute of Technology Bombay.


This article has been sent to the following recipient:

Chemistry matters. Join us to get the news you need.