Nanoink, Inc.

Wisconsin Alumni Research Foundation

Nanolnk, Inc.

Bjoern Rosner

Hua Zhang

Joseph S Fragala

Sylvain Cruchon-Dupeyrat

Raymond Roger Shile

Cedric Loiret-Bernal

Daniel Warren Van Der Weide

Linette Demers

Michael R Nelson

John Edward Bussan

Ray Eby

Bo He

Stamps and methods of making stamps for applications in anti-counterfeiting and authentication. The stamps are relatively small in size and feature nanoscale and microscale identification regions and features. High throughput manufacturing and high resolution methods are used to make the stamps including electron beam lithography and optical lithography. Anti-fouling coatings can be applied.

Stamps with micrometer-and nanometer-scale features and methods of fabrication thereof

Improved methods, devices, compositions, and systems are provided for concealing information on articles in commerce, such as pharmaceuticals, to improve detection of counterfeits. Embodiments are provided where Moir&#xe9; patterns on article surfaces are detectable using a revealing layer only when the surfaces are illuminated at or near particular angles. Embodiments incorporating revealing layers into detection systems, such as microscopes, are also provided. A method comprising: providing at least one pharmaceutical composition which comprises at least one surface which comprises at least one area which is adapted to provide a Moir&#xe9; base layer; illuminating the area at an angle; imaging the illuminated area with a Moir&#xe9; revealing layer to generate a Moir&#xe9; pattern. Such embodiments provide an additional layer of security over previous methods of detecting counterfeit articles.

Moir&#xe9; pattern generated by angular illumination of surfaces

Methods for providing pharmaceutical compositions and objects with identification regions and identification features which are difficult to detect. Microlithography, nanolithography, and stamping methods are used. The identification features can be positive protrusions or negative indentations with respect to the surface. The identification regions can comprise bar codes and holograms. DPN printing or other lithographies such as electron beam lithography, optical lithography, or nanoimprint lithography can be used to prepare stamps, which are then used to prepare the identification features. Redundant patterns can be formed. The invention is useful for counterfeit prevention. An apparatus for stamping the identification features is also described.

Identification features

Stamps with micrometer- and nanometer-scale features and methods of fabrication thereof

Frequency translation of microelectromechanical vibration signals such as a tip vibration signal in a scanning force microscopy system expands the versatility of existing control systems and enables new signal processing techniques. The vibration signal such as the cantilever probe tip vibration signal of a scanning force microscopy is frequency converted to a lower or higher frequency signal that is utilized to provide a control signal.

Heterodyne feedback system for scanning force microscopy and the like

Growing community of inventors

Chicago, IL, United States of America

Bjoern Rosner