Patents by Inventor Joseph Teran
Joseph Teran has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20240138163Abstract: Methods and compositions for forming perovskite hole transport layers for use in manufacturing photovoltaic devices are described. Embodiments include using a plurality of hole transport materials to produce high-performance HTL contacts to improve performance and stability.Type: ApplicationFiled: February 11, 2022Publication date: April 25, 2024Applicants: First Solar, Inc., Alliance for Sustainable Energy, LLCInventors: Joseph Jonathan Berry, Le Chen, Axel Finn Palmstrom, Tze-Bin Song, Vera Steinmann, Natasha Teran, Aravamuthan Varadarajan, Mengjin Yang, Xueping Yi, Zhibo Zhao, Kai Zhu
-
Publication number: 20240138164Abstract: Photovoltaic devices having contact layers are described herein. Devices, intermediate structures, and methods for making multilayer contacts for perovskite photovoltaic devices are provided. Embodiments include back contacts for N-I-P structures.Type: ApplicationFiled: February 11, 2022Publication date: April 25, 2024Applicants: First Solar, Inc., Alliance for Sustainable Energy, LLCInventors: Joseph Jonathan Berry, Le Chen, Axel Finn Palmstrom, Tze-Bin Song, Vera Steinmann, Natasha Teran, Aravamuthan Varadarajan, Xueping Yi, Zhibo Zhao, Kai Zhu
-
Patent number: 10503845Abstract: The disclosure provides an approach for reducing information loss when transferring from particles to grid and vice versa in a hybrid Lagrangian/Eulerian simulation, while also preserving stability. In one aspect, referred to as the rigid particle-in-cell (RPIC) method, a simulation application stores a sampling of local angular momentum for each particle, helping to preserve the angular momentum that would otherwise be lost in the transfer from grid to particles. In another aspect that is more generally applicable and referred to herein as the rigid and shearing particle-in-cell (RSPIC) method, the simulation application stores, for each particle, a matrix with rotational and shearing information. The RSPIC method effectively reduces dissipation, preserves angular momentum exactly, and prevents instabilities. Further, the RSPIC method is applicable to both incompressible liquids and material point method (MPM) simulations of materials such as solids.Type: GrantFiled: December 28, 2015Date of Patent: December 10, 2019Assignee: Disney Enterprises, Inc.Inventors: Alexey Stomakhin, Joseph Teran
-
Patent number: 10210287Abstract: The disclosure provides an approach for simulating and rendering materials across different states and undergoing phase transitions. In one configuration, a simulation application generates video frames depicting a material phenomenon using an augmented material point method (MPM). Traditional MPM does not handle incompressible materials such as fluids. Techniques disclosed herein augment the MPM with a Chorin-style projection technique to enable simulation of arbitrarily incompressible materials. In one configuration, this is achieved with a marker-and-cell (MAC) grid based MPM solver, a splitting of stress used in the simulation into elastic and dilational parts, a projection-like implicit treatment of the Eulerian evolution of the dilational part of the stress, and particular techniques for rasterizing and updating quantities on the MAC grid. In addition, a heat model may be coupled to the MPM solver, allowing material changes to be driven with temperature and phase changes.Type: GrantFiled: July 3, 2014Date of Patent: February 19, 2019Assignee: Disney Enterprises, Inc.Inventors: Andrew Selle, Joseph Teran, Alexey Stomakhin
-
Patent number: 10019827Abstract: The disclosure provides an approach for simulating and rendering granular materials. A simulation application generates video frames depicting a granular material phenomenon using a strain based elasto-plastic constitutive model integrated with a hybrid Eulerian/Lagrangian material point method (MPM). The elasto-plastic constitutive model includes physical equation(s) which dictate forces that affect the granular material during the simulation. In particular, the constitutive model may include user-controllable parameters defining threshold(s) to start plastic deformation, as well as a hardening parameter which controls how fast the granular material packs under compression. The MPM is a procedure in which particles of the granular material and a background grid are coupled, with the grid being used to assist in computing forces dictated by the physical equation(s) of the elasto-plastic constitutive model.Type: GrantFiled: April 21, 2014Date of Patent: July 10, 2018Assignee: Disney Enterprises, Inc.Inventors: Andrew Selle, Lawrence Chai, Alexey Stomakhin, Joseph Teran
-
Publication number: 20170185701Abstract: The disclosure provides an approach for reducing information loss when transferring from particles to grid and vice versa in a hybrid Lagrangian/Eulerian simulation, while also preserving stability. In one aspect, referred to as the rigid particle-in-cell (RPIC) method, a simulation application stores a sampling of local angular momentum for each particle, helping to preserve the angular momentum that would otherwise be lost in the transfer from grid to particles. In another aspect that is more generally applicable and referred to herein as the rigid and shearing particle-in-cell (RSPIC) method, the simulation application stores, for each particle, a matrix with rotational and shearing information. The RSPIC method effectively reduces dissipation, preserves angular momentum exactly, and prevents instabilities. Further, the RSPIC method is applicable to both incompressible liquids and material point method (MPM) simulations of materials such as solids.Type: ApplicationFiled: December 28, 2015Publication date: June 29, 2017Inventors: Alexey STOMAKHIN, Joseph TERAN
-
Patent number: 9135738Abstract: A novel algorithmic framework is presented for the simulation of hyperelastic soft tissues that drastically improves each aspect discussed above compared to existing techniques. The approach is robust to large deformation (even inverted configurations) and extremely stable by virtue of careful treatment of linearization. Additionally, a new multigrid approach is presented to efficiently support hundreds of thousands of degrees of freedom (rather than the few thousands typical of existing techniques) in a production environment. Furthermore, these performance and robustness improvements are guaranteed in the presence of both collision and quasistatic/implicit time stepping techniques. The result is a significant advance in the applicability of hyperelastic simulation to skeleton driven character skinning.Type: GrantFiled: December 20, 2011Date of Patent: September 15, 2015Assignee: DISNEY ENTERPRISES, INC.Inventors: Rasmus Tamstorf, Andrew Selle, Aleka McAdams, Eftychios Sifakis, Joseph Teran
-
Publication number: 20150187116Abstract: The disclosure provides an approach for simulating and rendering granular materials. A simulation application generates video frames depicting a granular material phenomenon using a strain based elasto-plastic constitutive model integrated with a hybrid Eulerian/Lagrangian material point method (MPM). The elasto-plastic constitutive model includes physical equation(s) which dictate forces that affect the granular material during the simulation. In particular, the constitutive model may include user-controllable parameters defining threshold(s) to start plastic deformation, as well as a hardening parameter which controls how fast the granular material packs under compression. The MPM is a procedure in which particles of the granular material and a background grid are coupled, with the grid being used to assist in computing forces dictated by the physical equation(s) of the elasto-plastic constitutive model.Type: ApplicationFiled: April 21, 2014Publication date: July 2, 2015Applicant: Disney Enterprises, Inc.Inventors: Alexey STOMAKHIN, Lawrence CHAI, Andrew SELLE, Joseph TERAN
-
Publication number: 20150186565Abstract: The disclosure provides an approach for simulating and rendering materials across different states and undergoing phase transitions. In one configuration, a simulation application generates video frames depicting a material phenomenon using an augmented material point method (MPM). Traditional MPM does not handle incompressible materials such as fluids. Techniques disclosed herein augment the MPM with a Chorin-style projection technique to enable simulation of arbitrarily incompressible materials. In one configuration, this is achieved with a marker-and-cell (MAC) grid based MPM solver, a splitting of stress used in the simulation into elastic and dilational parts, a projection-like implicit treatment of the Eulerian evolution of the dilational part of the stress, and particular techniques for rasterizing and updating quantities on the MAC grid. In addition, a heat model may be coupled to the MPM solver, allowing material changes to be driven with temperature and phase changes.Type: ApplicationFiled: July 3, 2014Publication date: July 2, 2015Inventors: Alexey STOMAKHIN, Joseph TERAN, Andrew SELLE
-
Patent number: 8803887Abstract: A computer graphic system and methods for simulating hair is provided. In accordance with aspects of the disclosure a method for hybrid hair simulation using a computer graphics system is provided. The method includes generating a plurality of modeled hair strands using a processor of the computer graphics system. Each hair strand includes a plurality of particles and a plurality of spring members coupled in between the plurality of particles. The method also includes determining a first position and a first velocity for each particle in the plurality of modeled hair strands using the processor and coarsely modeling movement of the plurality of modeled hair strands with a continuum fluid solver. Self-collisions of the plurality of modeled hair strands are computed with a discrete collision model using the processor.Type: GrantFiled: January 15, 2010Date of Patent: August 12, 2014Assignee: Disney Enterprises, Inc.Inventors: Aleka McAdams, Andrew Selle, Kelly Ward, Eftychios Sifakis, Joseph Teran
-
Publication number: 20120281019Abstract: A novel algorithmic framework is presented for the simulation of hyperelastic soft tissues that drastically improves each aspect discussed above compared to existing techniques. The approach is robust to large deformation (even inverted configurations) and extremely stable by virtue of careful treatment of linearization. Additionally, a new multigrid approach is presented to efficiently support hundreds of thousands of degrees of freedom (rather than the few thousands typical of existing techniques) in a production environment. Furthermore, these performance and robustness improvements are guaranteed in the presence of both collision and quasistatic/implicit time stepping techniques. The result is a significant advance in the applicability of hyperelastic simulation to skeleton driven character skinning.Type: ApplicationFiled: December 20, 2011Publication date: November 8, 2012Applicant: Disney Enterprises, Inc.Inventors: Rasmus Tamstorf, Andrew Selle, Aleka McAdams, Eftychios Sifakis, Joseph Teran
-
Publication number: 20100277475Abstract: A computer graphic system and methods for simulating hair is provided. In accordance with aspects of the disclosure a method for hybrid hair simulation using a computer graphics system is provided. The method includes generating a plurality of modeled hair strands using a processor of the computer graphics system. Each hair strand includes a plurality of particles and a plurality of spring members coupled in between the plurality of particles. The method also includes determining a first position and a first velocity for each particle in the plurality of modeled hair strands using the processor and coarsely modeling movement of the plurality of modeled hair strands with a continuum fluid solver. Self-collisions of the plurality of modeled hair strands are computed with a discrete collision model using the processor.Type: ApplicationFiled: January 15, 2010Publication date: November 4, 2010Applicant: Disney Enterprises, Inc.Inventors: Aleka McAdams, Andrew Selle, Kelly Ward, Eftychios Sifakis, Joseph Teran