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John Martin Kolinski

Publications associées (28)

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Lift-Off Instability During the Impact of a Drop on a Solid Surface

John Martin Kolinski

We directly measure the rapid spreading dynamics succeeding the impact of a droplet of fluid on a solid, dry surface. Upon impact, the air separating the liquid from the solid surface fails to drain and wetting is delayed as the liquid rapidly spreads outw ...

2014

Air mediated dynamics of droplet impact on a smooth, solid surface

John Martin Kolinski

Before a falling drop can contact a solid surface, it must displace the air beneath it. Recent calculations and experiments show that as the drop approaches the surface, the air fails to drain, and instead compresses. As the air compresses, the pressure in ...

2014

Skating on a Film of Air: Drops Impacting on a Surface

John Martin Kolinski

The commonly accepted description of drops impacting on a surface typically ignores the essential role of the air that is trapped between the impacting drop and the surface. Here we describe a new imaging modality that is sensitive to the behavior right at ...

American Physical Society2012

Droplet impact is ubiquitous in our everyday experience; yet many mysteries associated with the phenomenon remain, including the role played by air during the impact process. When a liquid meets a solid surface in an atmosphere, it must drain the air benea ...

2012

Splashing or not

John Martin Kolinski

The splashing of a droplet when impacting a solid surface is common to our everyday experience as well as to industrial applications that require controlled deposition of liquid mass. Still the mechanism for splashing is not well understood. A recent study ...

2011

Droplet impact and the dynamics of rapidly moving contact lines

John Martin Kolinski

When a~~liquid drop approaches a flat solid surface, the air~~beneath it is compressed,~~flattening the bottom of the drop and~~forcing initial contact to occur in a~~ring-shape, trapping a pocket~~of air in its center as two wetting fronts~~rapidly expand both~~o ...

2011

The Dynamics of Drop Impact

John Martin Kolinski

There are many aspects of the dynamics of liquids wetting solid surfaces that are not fully understood. One such aspect is what happens at the first instance of contact. We study the dynamics of a partially wetting fluid drop as it approaches a solid surfa ...

2010

Shape and Motion of a Ruck in a Rug

John Martin Kolinski

The motion of a ruck in a rug is used as an analogy to explain the role of dislocations in crystalline solids. We take literally one side of this analogy and study the shape and motion of a bump, wrinkle or ruck in a thin sheet in partial contact with a ro ...

American Physical Society2009