Doshisha University Archives

Spontaneous pattern formation in a three-phase system (PEG+DEX+gelatin) within a PEG-coated glass capillary. The compositions of the PEG/DEX/gelatin are (i) 4.2 wt %/3.3 wt %/5.0 wt %; (ii) 3.9 wt %/3.1 wt %/4.7 wt %; (iii) 3.6 wt %/2.9 wt %/4.3 wt %. The red, green, and black (no fluorescence) regions correspond to the DEX- (labeled with TRITC-dextran), gelatin- (labeled with FITC-I) and PEG-rich phases, respectively. White dashed lines indicate the position of the inner glass wall. (a) Snapshots of the solution inside the capillary (inner diameter: 140 μm, 280 μm) at the different times. (b) Spatiotemporal plot of (a). (c) Macroscopic phase separation of the PEG/DEX/gelatin solution in bulk. The composition of the PEG/DEX/gelatin is 4.2 wt %/3.3 wt %/5.0 wt %. Upper: Before centrifugation (at 60 °C in the incubator and for 20 min after mixing the solution); Lower: After centrifugation for 1 min (3000 rpm). The top, middle, and bottom phases correspond to the PEG-, gelatin-, and DEX-rich phases, respectively. The right panels show the fluorescence microscopy of the top (PEG-rich) phase on the glass slide. -- ACS/Doshisha University

Biochemistry & Organic Chemistry, Biophysics, Nanotechnology & SynBio, Origin & Evolution of Life, Press Release

Self-emergence Of Stational Periodic Arrangement Of Dual Microdroplets Through Quasi One-dimensional Confinement

by Keith CowingMarch 20, 2024

Polymer systems composed of multiple components can spontaneously induce emulsion or microdroplets by mechanical mixing, as an intermediate state of macroscopic phase separation.

Doshisha University

Self-emergence Of Stational Periodic Arrangement Of Dual Microdroplets Through Quasi One-dimensional Confinement

NASA Establishes Mars Forward Operational Risk and Contamination Evaluation (M-FORCE) Tiger Team to Shape Mars Planetary Protection Protocols

Opportunity to Contribute to NASA DARES Community White Paper on Phototrophic Biosignatures

The Search For Life Elsewhere: Avoiding Hype and Fostering Public Understanding

Panchromatic Spectra of Nearby Low-mass and Sun-like Stars with Directly Imageable Habitable Zones

Alfred: A Flexible, User-Friendly Python Package for Exoplanet Confirmation