Northwestern University

James L Hedrick, Iii

Chad A Mirkin

David Alan Walker

Keith Andrew Brown

Methods and apparatus comprising a dewetting phase and a polymerization liquid that are immiscible, and can be used for the formation of three-dimensional objects, wherein the method does not require a dead zone. Additionally, methods and apparatus that employ an optically transparent cooling apparatus to mitigate heat generated during the fabrication process, and the use of a mobile phase to provide a shearing interface to reduce interfacial adhesive forces.

Method for the fabrication of three-dimensional objects and apparatus for same

Methods and apparatus comprising a dewetting material and a polymerization liquid that are immiscible and dewetting, and can be used for the formation of three-dimensional objects, wherein the method does not require a dead zone. Additionally, methods and apparatus that employ the use of a flowing dewetting material to provide a shearing interface to reduce interfacial adhesive forces.

Rapid, large volume, dead layer-free 3D printing

Disclosed herein are methods of using a fluoro oil mask to prepare a beam pen lithography pen array.

Liquid masks for microfabrication processes

The disclosure provides a method of inking a polymer pen lithography tip array ('PPL tip array'), including applying an ink composition to a PPL tip array using at least two spray applicators to deposit the ink as a non-uniform ink layer. The disclosure further provides a method of depositing at least two ink compositions on PPL tip array, including applying a first ink to a first defined area using a first spray applicator, and applying a second ink to a second defined area using a second spray applicator. The disclosure further provides a method of scaling a linear ink composition gradient provided by at least two spray applicators to a PPL tip array having a length, L, including positioning the spray applicators at a distance of about 5.0 L to about 8.0 L relative to the surface of the PPL tip array, positioning the spray applicators at a distance of about 0.5 L to about 3.0 L relative to each other, and applying an ink composition.

Gradient spray coating polymer pen arrays

Provided here are hard transparent polymer pen arrays, methods of printing indicia using the same, and methods of preparing the same.

Growing community of inventors

Evanston, IL, United States of America

James L Hedrick, Iii