3m Innovative Properties Company

Craig R Sykora

Richard John Pokorny

Robert J DeVoe

Brian J Gates

Dean Faklis

Catherine A Leatherdale

Przemyslaw Pawel Markowicz

Robert T Krasa

Douglas Scott Dunn

Lijun Zu

Jeffrey M Florczak

Todd A Ballen

Dora M Paolucci

Wayne Francis Varner

Sarah L Hagen

Mikhail L Pekurovsky

Craig R Schardt

Steven D Solomonson

Mark T Anderson

Nestor O Farmiga

Robert F Kamrath

Dennis Earl Ferguson

Roger W Barton

Elisa M Cross

Anthony M Renstrom

Mitchell A F Johnson

Michelle Lund Toy

Franklyn L Frederickson

Andrew Murnan

Jeremy K Larsen

Donald T Landin

David C Raithel

James Robert Onstott

Andrew C Anderson

Robert J Devoe

Matthew R C Atkinson

Serge Wetzels

Junjun Wu

Kim C Sachs, Jr

Alessandra O Chiareli

Jonathan C Dilley

Lawrence J Donalds

Astghik Poladyan

Adrian H Cook

Anthony D Deutsch

Steven C Reed

Andrew J Murnan

Nester O Farmiga

Floor pad

Trapezoidal structured abrasive article

Floor scrubbing pad

An exposure system includes a light source emitting a beam along an optical axis that is capable of inducing a multi-photon reaction in a resin. The exposure system further includes a resin undergoing multiphoton reaction, as well as an automated system including a monitor that measures at least one property of the beam selected from power, pulse length, shape, divergence, or position in a plane normal to the optical axis. The monitor generates at least one signal indicative of the property of the beam, and a sub-system adjusts the beam in response to the signal from the monitor.

Multi-photon exposure system

A process for making a microneedle array master comprises: (a) providing a photoreactive composition, the photoreactive composition comprising: (1) at least one reactive species that is capable of undergoing an acid- or radical-initiated chemical reaction, and (2) at least one multiphoton photoinitiator system; and (b) imagewise exposing at least a portion of the composition to light sufficient to cause simultaneous absorption of at least two photons, thereby inducing at least one acid- or radical-initiated chemical reaction where the composition is exposed to the light, the imagewise exposing being carried out in a pattern that is effective to define at least the surface of a plurality of microneedles. The microneedles may be solid and the outer surface of the microneedles may be characterized by at least one concave area. The master may be used to fabricate a tool for replication.

Process for making microneedles, microneedle arrays, masters, and replication tools

A method includes scanning a radiation beam with respect to a multi-photon curable photoreactive composition. The radiation beam includes a power sufficient to at least partially cure a volume of the multiphoton curable photoreactive composition. The method further includes modifying a characteristic of the radiation beam as the radiation beam is scanned.

Method for making structures with improved edge definition

A system comprising a substrate having thereon a multiphoton curable photoreactive composition, a light source that emits a light beam comprising a plurality of wavelengths onto at least one region of the composition on the substrate, and a detector that detects a portion of light reflected from the composition to obtain a location signal with respect to the substrate, wherein the location signal is based at least on a wavelength of the reflected light.

Chromatic confocal sensor

A process for making a microlens array or a microlens array masterform comprises

Process for making microlens arrays and masterforms

A method including providing a substrate having thereon a layer including a multiphoton polymerizable composition, applying a light beam to at least one region of the layer, wherein the light beam cures or initiates cure of the multiphoton curable photoreactive composition; and processing a portion of the light beam reflected off the substrate to obtain a location signal of an interface between the layer and the substrate at each region.

Method and apparatus for processing multiphoton curable photoreactive compositions

An optical waveguide comprises a core, an inner cladding laterally surrounding the core, and an outer cladding laterally surrounding the inner cladding, wherein the core, inner cladding, and outer cladding have a depressed well configuration. The waveguide operates in three or more wavelength bands, wherein a first wavelength band is centered at about 1300 nm, and wherein a second wavelength band is centered at about 1625 nm. The waveguide has bend losses that are less than or equal to 0.7 dB/turn when measured on a 10 mm radius bend at 1625 nm.

Triple-band bend tolerant optical waveguide

An optical waveguide comprises a core, an inner cladding laterally surrounding the core, and an outer cladding laterally surrounding the inner cladding, wherein the core, inner cladding, and outer cladding have a depressed well configuration. The waveguide operates in three or more wavelength bands, wherein a first wavelength band is centered at about 1300 nm, and wherein a second wavelength band is centered at about 1625 nm. The waveguide has bend losses that are less than or equal to 1.0 dB/turn when measured on a 5 mm radius bend at 1625 nm and bend losses that are less than or equal to 1.5 dB/turn when measured on a 5 mm radius bend at 1650 nm.

An optical waveguide, such as an optical fiber, including a core having a refractive index nand a radius r; an inner cladding laterally surrounding the core, the inner cladding having a refractive index nand an outer radius of r; an outer cladding laterally surrounding the inner cladding, the outer cladding having a refractive index n; and a narrow depressed well, wherein n&#x3e;n&#x3e;n. The range of the ratio of the inner, depressed-well clad radius, r, to core radius, r, varies from about 2.4 to 3.0. The waveguide has a +&#x394; of about 0.0014 to 0.0021, a &#x2212;&#x394; of about &#x2212;0.0021 to &#x2212;0.0034, and a &#x394;of about 0.0043 to 0.0049.

Dual-band bend tolerant optical waveguide

A fusion splice including a first optical fiber having a first MFD and a first MFD expansion rate. The splice further includes a second fiber having a second MFD and a second MFD expansion rate, wherein the second MFD is lower than the first MFD. The second fiber comprises a core, a cladding radially surrounding the core, and a zone of high-concentration of fluorine between the core and the cladding. The rate of MFD expansion of the first fiber is less than the rate of MFD expansion of the second fiber during the fusion splicing operation.

Optical fiber fusion splice having a controlled mode field diameter expansion match

Growing community of inventors

New Richmond, WI, United States of America

Craig R Sykora