scholarly journals The glass transition and relaxation behavior of bulk water and a possible relation to confined water

2010 ◽  
Vol 132 (1) ◽  
pp. 014508 ◽  
Author(s):  
Jan Swenson ◽  
José Teixeira
Keyword(s):  
Glass Transition ◽  
Bulk Water ◽  
Relaxation Behavior ◽  
Confined Water

Why is there no clear glass transition of confined water?

2013 ◽  
Vol 424 ◽  
pp. 20-25 ◽  
Author(s):  
Jan Swenson ◽  
Khalid Elamin ◽  
Helén Jansson ◽  
Shigeharu Kittaka
Keyword(s):  
Glass Transition ◽  
Confined Water ◽  
Clear Glass

scholarly journals Water confined in solutions of biological relevance

2020 ◽  
Vol 92 (10) ◽  
pp. 1563-1574
Author(s):  
Marie-Claire Bellissent-Funel
Keyword(s):  
Aqueous Solutions ◽  
Bulk Water ◽  
Biological Macromolecules ◽  
Organic Solutes ◽  
Confined Water ◽  
The Past ◽  
Structure And Dynamics ◽  
Biological Relevance ◽  
The Stability

AbstractIn many relevant situations, water is not in its bulk form but instead attached to some substrates or filling some cavities. We shall call water in the latter environment confined water as opposed to bulk water. It is known that the confined water is essential for the stability and the function of biological macromolecules. In this paper, we provide a review of the experimental and computational advances over the past decades concerning the understanding of the structure and dynamics of water confined in aqueous solutions of biological relevance. Examples involving water in solution of organic solutes (cryoprotectants such as dimethylsulfoxide (DMSO), sugars such as trehalose) are provided.

scholarly journals Anomalously low dielectric constant of confined water

Science ◽  
2018 ◽  
Vol 360 (6395) ◽  
pp. 1339-1342 ◽  
Author(s):  
L. Fumagalli ◽  
A. Esfandiar ◽  
R. Fabregas ◽  
S. Hu ◽  
P. Ares ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Bulk Water ◽  
Dead Layer ◽  
Low Dielectric Constant ◽  
Interfacial Water ◽  
Confined Water ◽  
Low Dielectric ◽  
Out Of Plane ◽  
Atomically Flat ◽  
Rotational Freedom

The dielectric constant ε of interfacial water has been predicted to be smaller than that of bulk water (ε ≈ 80) because the rotational freedom of water dipoles is expected to decrease near surfaces, yet experimental evidence is lacking. We report local capacitance measurements for water confined between two atomically flat walls separated by various distances down to 1 nanometer. Our experiments reveal the presence of an interfacial layer with vanishingly small polarization such that its out-of-plane ε is only ~2. The electrically dead layer is found to be two to three molecules thick. These results provide much-needed feedback for theories describing water-mediated surface interactions and the behavior of interfacial water, and show a way to investigate the dielectric properties of other fluids and solids under extreme confinement.

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