Anil Yuksel

US Patent:

20180065186, Mar 8, 2018

Filed:

Mar 31, 2017

Appl. No.:

15/475794

Inventors:

- Austin TX, US
Nilabh Kumar Roy - Austin TX, US
Anil Yuksel - Austin TX, US
Chee Seng Foong - Austin TX, US

International Classification:

B22F 7/02
H01L 23/00
B33Y 30/00
B33Y 50/02
B33Y 80/00
B22F 3/105
B23K 1/00
H01L 21/48
H01L 21/56
H01L 21/67
H01L 23/31
H01L 23/498
B33Y 10/00
B23K 101/36
H01L 23/544
B22F 1/00
H01L 21/683

Abstract:

A microscale selective laser sintering (μ-SLS) that improves the minimum feature-size resolution of metal additively manufactured parts by up to two orders of magnitude, while still maintaining the throughput of traditional additive manufacturing processes. The microscale selective laser sintering includes, in some embodiments, ultra-fast lasers, a micro-mirror based optical system, nanoscale powders, and a precision spreader mechanism. The micro-SLS system is capable of achieving build rates of at least 1 cm/hr while achieving a feature-size resolution of approximately 1 μm. In some embodiments, the exemplified systems and methods facilitate a direct write, microscale selective laser sintering μ-SLS system that is configured to write 3D metal structures having features sizes down to approximately 1 μm scale on rigid or flexible substrates. The exemplified systems and methods may operate on a variety of material including, for example, polymers, dielectrics, semiconductors, and metals.

US Patent:

20170282247, Oct 5, 2017

Filed:

Mar 31, 2017

Appl. No.:

15/475807

Inventors:

- Austin TX, US
Anil Yuksel - Austin TX, US
Nilabh Kumar Roy - Austin TX, US

International Classification:

B22F 3/105
B33Y 50/02
G06F 17/50
B33Y 10/00

Abstract:

Exemplified microscale selective laser sintering (μ-SLS or micro-SLS) systems and methods facilitate modeling of the nanoparticle powder bed by simulating the interactions between particles during the powder spreading operation. In particular, the exemplified methods and system use multiscale modeling techniques to accurately predict the formation and mechanical/electrical properties of parts produced by selective laser sintering of powder beds. Discrete element modeling is used for nanoscale particle interactions by implementing the different forces dominant at nanoscale. A heat transfer analysis is used to predict the sintering of individual particles in the powder beds in order to build up a complete structural model of the parts that are being produced by the SLS process.