Aravinda D Kar

6526327, Feb 25, 2003

Dec 7, 2000

09/731993

Aravinda Kar - Orlando FL
Srikanth Sankaranarayanan - Orlando FL
Franz-Josef Kahlen - Orlando FL

University of Central Florida - Orlando FL

B23K 2600

700119, 700 98, 700118, 700120, 700159, 700166, 2191216

A one-step rapid manufacturing process is used to create three dimensional prototyping parts. Material such as metal, ceramics and the like powder, and wire, and the like, is delivered to a laser beam-material interaction region where it is melted and deposited on a substrate. The melted and deposited material is placed on a XYZ workstation. Three dimensional parts are created by moving the XYZ workstation relative to the laser beam while simultaneously feeding powdered alloys, first in the XY and then in the Z plane. Beam shaping focusing optics can be used to tailor the intensity distribution of the laser beam to the requirements of the deposition layers, and can be used to create parts with desired mechanical or thermodynamic properties. Additional beam splitting and recombining optics can be used to allow powder to be fed at a perpendicular angle to the substrate.

6732562, May 11, 2004

May 8, 2001

09/851517

Nathaniel R. Quick - Lake Mary FL
Aravinda Kar - Oviedo FL
Yonggang Li - Orlando FL
Raymond R. McNeice - Debary FL

University of Central Florida - Orlando FL

B21D 3716

723421, 72 38, 72279, 72286, 723425, 723426, 7234294

An apparatus and method is disclosed for drawing continuous metallic wire having a first diameter to a metallic fiber having a reduced second diameter. A feed mechanism moves the wire at a first linear velocity. A laser beam heats a region of the wire to an elevated temperature. A draw mechanism draws the heated wire at a second and greater linear velocity for providing a drawn metallic fiber having the reduced second diameter.

7013695, Mar 21, 2006

Apr 20, 2004

10/828711

Nathaniel R. Quick - Lake Mary FL, US
Aravinda Kar - Oviedo FL, US
Yonggang Li - Orlando FL, US
Raymond R. McNeice - Debary FL, US

B21D 37/16

723425, 72286, 72288, 723421, 72364, 72378, 72 38

An apparatus and method is disclosed for drawing continuous metallic wire having a first diameter to a metallic fiber having a reduced second diameter. A feed mechanism moves the wire at a first linear velocity. A laser beam heats a region of the wire to an elevated temperature. A draw mechanism draws the heated wire at a second and greater linear velocity for providing a drawn metallic fiber having the reduced second diameter.

7237422, Jul 3, 2007

Nov 1, 2005

11/264877

Nathaniel R. Quick - Lake Mary FL, US
Aravinda Kar - Oviedo FL, US
Yonggang Li - Orlando FL, US
Raymond R. McNeice - Debary FL, US

University of Central Florida - Orlando FL

B21D 37/16

7234294, 72 38, 72364, 72378

An apparatus and method is disclosed for drawing continuous metallic wire having a first diameter to a metallic fiber having a reduced second diameter. A feed mechanism moves the wire at a first linear velocity. A laser beam heats a region of the wire to an elevated temperature. A draw mechanism draws the heated wire at a second and greater linear velocity for providing a drawn metallic fiber having the reduced second diameter.

7419887, Sep 2, 2008

Jul 26, 2005

11/189266

Nathaniel R. Quick - Lake Mary FL, US
Aravinda Kar - Oviedo FL, US

H01L 21/20
H01L 21/36

438479, 438478, 438485, 438487, 438535, 257E23095, 977700, 977712, 977773, 977786

An apparatus and method is disclosed for forming a nano structure on a substrate with nano particles. The nano particles are deposited through a nano size pore onto the substrate. A laser beam is directed through a concentrator to focus a nano size laser beam onto the deposited nano particles on the substrate. The apparatus and method is suitable for fabricating patterned conductors, semiconductors and insulators on semiconductor wafers of a nano scale line width by direct nanoscale deposition of materials.

7603883, Oct 20, 2009

Jun 25, 2007

11/821640

Nathaniel R. Quick - Lake Mary FL, US
Aravinda Kar - Oviedo FL, US
Yonggang Li - Orlando FL, US
Raymond R. McNeice - Debary FL, US

University of Central Florida - Orlando FL

B21B 45/00

72 46, 72286, 723421, 723425, 72700

An apparatus and method is disclosed for drawing continuous metallic wire having a first diameter to a metallic fiber having a reduced second diameter. A feed mechanism moves the wire at a first linear velocity. A laser beam heats a region of the wire to an elevated temperature. A draw mechanism draws the heated wire at a second and greater linear velocity for providing a drawn metallic fiber having the reduced second diameter.

7630147, Dec 8, 2009

Feb 16, 2007

11/675819

Aravinda Kar - Oviedo FL, US
Chong Zhang - Orlando FL, US
Nathaniel R. Quick - Lake Mary FL, US

University of Central Florida Research Foundation, Inc. - Orlando FL

G02B 13/18

359716, 359708

Apparatus, systems, methods and devices of an optical system for producing a laser beam having pitchfork profile. The system includes a laser source providing an input Gaussian beam, refractive optical lenses for converting the input Gaussian beam into a super Gaussian beam. A focusing lens focuses the super Gaussian beam, where by diffraction effect after the focusing lens, the beam profile near a focal spot is a pitchfork shaped beam. In an embodiment, the refractive optical lenses are plano-aspheric lenses. The pitchfork shaped beam is produced by passing the input Gaussian beam through plano-aspheric lenses to produce the super Gaussian output beam, and passing the super Gaussian output beam through a focusing lens to produce the output beam having a pitchfork profile. In an embodiment, the pitchfork shaped beam is applied to laser microvias drilling in electronic packaging to produce residue free holes at reduced production cost with simplified procedures.

7691731, Apr 6, 2010

Mar 15, 2007

11/686572

Sachin M. Bet - Orlando FL, US
Aravinda Kar - Oviedo FL, US

University of Central Florida Research Foundation, Inc. - Orlando FL

H01L 21/20
H01L 21/36

438479, 438478, 257E21174

A method of forming crystalline semiconducting layers on low melting or low softening point substrates includes the steps of providing an aqueous solution medium including a plurality of semiconductor nanoparticles dispersed therein having a median size less than 10 nm, and applying the solution medium to at least one region of a substrate to be coated. The substrate has a melting or softening point of