May 8, 2020

Paper published May 8, 2020

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Fluid commonly flows in response to an external pressure gradient. However, when a tunnel-containing hydrogel is immersed in water, spontaneous flow occurs through the tunnel without any pressure gradient. We confirmed this flow in a wide range of...

January 31, 2020

Paper published January 31, 2020

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A fourth phase of water, labeled exclusion-zone or “EZ,” extends from hydrophilic surfaces. Salient features include exclusion of colloidal and molecular solutes, and characteristic light absorbance at 270 nm. In cell systems, EZ water interf...

December 7, 2019

Paper published December 6th, 2019

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One of the characteristics of aqueous interfaces is their negative charge, whose origin is still a subject of scientific debate. In this work, we provide spectroscopic evidence that bicarbonate anions, from dissolution of atmospheric CO2, c...

September 17, 2019

Paper published September 17, 2019

link to journal; full text (PDF)

While water evaporation and condensation are of fundamental importance to our environment, many features remain under investigation. In this study, we explored the water-condensation circle (WCC) formed on the inner surface of Petri dish li...

July 31, 2019

Paper published July 31, 2018

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Silk sericin is a globular protein whose resistance against fouling is important for applications in biomaterials and water-purification membranes. Here it is shown how sericin generates a water-exclusion zone that may facilitate antifouling beh...

July 31, 2018

Paper published July 31, 2018

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It is now well-confirmed that hydrophilic surfaces including those within the cell generate structural changes in water. This interfacial water is ordered and acquires features different from the bulk. Amongst those features is the exclusion of...

July 12, 2018

Paper published July 11, 2018

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Flow of electrical current through water is expected to increase water temperature. We passed low-frequency alternating electric current through distilled, deionized water using platinum electrodes and found, instead, a diminution of temperature...

May 8, 2018

Paper published May 8, 2018

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When droplets of purified water (1–5 ll) were cooled from the bottom, they slowly and continuously supercooled before releasing latent heat as a transient burst of infra-red (IR) radiation. In order to determine the role of this IR emission, a thi...

April 18, 2018

Paper published July 11, 2018

link to journalfull text (PDF) 

Earlier studies have reported the formation of an exclusion zone devoid of microspheres at the interface of water with a hydrophilic surface such as Nafion® or the hydrophilic ceramic powder. We now report the formation of a ‘three-dimensional...

June 13, 2017

Dr. Pollack interviewed by Dr. Keesha Ewers.  Approximately 55 minutes.

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February 1, 2020

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Gerald H. Pollack, PhD

Professor of Bioengineering - Box 355061

University of Washington

Seattle, WA 98195

ghp@u.washington.edu

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