Chemical gradients on graphene to drive droplet motion
SC Hernandez, CJC Bennett, CE Junkermeier… - Acs Nano, 2013 - ACS Publications
This work demonstrates the production of a well-controlled, chemical gradient on the surface
of graphene. By inducing a gradient of oxygen functional groups, drops of water and
dimethyl-methylphosphonate (a nerve agent simulant) are “pulled” in the direction of
increasing oxygen content, while fluorine gradients “push” the droplet motion in the direction
of decreasing fluorine content. The direction of motion is broadly attributed to
increasing/decreasing hydrophilicity, which is correlated to high/low adhesion and binding …
of graphene. By inducing a gradient of oxygen functional groups, drops of water and
dimethyl-methylphosphonate (a nerve agent simulant) are “pulled” in the direction of
increasing oxygen content, while fluorine gradients “push” the droplet motion in the direction
of decreasing fluorine content. The direction of motion is broadly attributed to
increasing/decreasing hydrophilicity, which is correlated to high/low adhesion and binding …
[PDF][PDF] Chemical Gradients on Graphene To Drive Droplet Motion
C Sandra, CJC Bennett, CE Junkermeier, SD Tsoi… - 2013 - academia.edu
This work demonstrates the production of a wellcontrolled, chemical gradient on the surface
of graphene. By inducing a gradient of oxygen functional groups, drops of water and
dimethyl-methylphosphonate (a nerve agent simulant) are “pulled” in the direction of
increasing oxygen content, while fluorine gradients “push” the droplet motion in the direction
of decreasing fluorine content. The direction of motion is broadly attributed to
increasing/decreasing hydrophilicity, which is correlated to high/low adhesion and binding …
of graphene. By inducing a gradient of oxygen functional groups, drops of water and
dimethyl-methylphosphonate (a nerve agent simulant) are “pulled” in the direction of
increasing oxygen content, while fluorine gradients “push” the droplet motion in the direction
of decreasing fluorine content. The direction of motion is broadly attributed to
increasing/decreasing hydrophilicity, which is correlated to high/low adhesion and binding …
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