Patents by Inventor Joel L. Plawsky
Joel L. Plawsky 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).
-
Patent number: 11958020Abstract: A method of assessing a membrane, including calculating fluid dynamic characteristics of at least one of a membrane and a material to be passed through the membrane, where the material comprises particles; obtaining characteristic of at least one force acting on the particles of the material to be passed through the membrane due to the interaction between the particles and the membrane, the at least one force being an intermolecular force; combining the calculated fluid dynamic characteristic and the obtained characteristics to assess the flow of the material through the membrane; and optimizing at least one characteristics of the membrane in relation to the material. The membrane includes a plurality of rows and a plurality of teardrop structures arranged in the plurality of rows. The teardrop structures in each row are arranged at substantially the same angle with respect to an anticipated direction of flow through the membrane.Type: GrantFiled: March 30, 2020Date of Patent: April 16, 2024Assignee: Rensselaer Polytechnic InstituteInventors: Georges Belfort, Joel L. Plawsky, Corey Christopher Woodcock, Mirco Sorci, Dustin J. Andersen
-
Publication number: 20220161199Abstract: A method of assessing a membrane, including calculating fluid dynamic characteristics of at least one of a membrane and a material to be passed through the membrane, where the material comprises particles; obtaining characteristic of at least one force acting on the particles of the material to be passed through the membrane due to the interaction between the particles and the membrane, the at least one force being an intermolecular force; combining the calculated fluid dynamic characteristic and the obtained characteristics to assess the flow of the material through the membrane; and optimizing at least one characteristics of the membrane in relation to the material. The membrane includes a plurality of rows and a plurality of teardrop structures arranged in the plurality of rows. The teardrop structures in each row are arranged at substantially the same angle with respect to an anticipated direction of flow through the membrane.Type: ApplicationFiled: March 30, 2020Publication date: May 26, 2022Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventors: Georges Belfort, Joel L. Plawsky, Corey Christopher Woodcock, Mirco Sorci, Dustin J. Andersen
-
Publication number: 20220156437Abstract: A method of directed evolution for developing a membrane includes using a 3D protocol to simulate particle trajectories and determine the effect of intermolecular forces on particle capture performance during membrane filtration to determine the effectiveness of different candidate membranes in optimizing performance.Type: ApplicationFiled: November 19, 2021Publication date: May 19, 2022Applicant: Rensselaer Polytechnic InstituteInventors: Georges Belfort, Joel L. Plawsky, Mirco Sorci, Chenyu Guan
-
Publication number: 20210311226Abstract: A two dimensional (2D) photonic crystal (PhC) structure includes a substrate and a periodic grating structure formed on the substrate. The periodic grating structure includes a plurality of gratings having a grating period, a. Each pair of adjacent gratings is separated by air. Each grating has a grating width, d, and includes a plurality of alternating layers of a first material and a second material. The first material corresponds to a high index material. The second material corresponds to a low index material. A ratio of a first refractive index of the first material to a second refractive index of the second material is greater than or equal to two. Each first material layer has a first thickness, t1. Each second material layer has a second thickness, t2. The 2D PhC structure has a structure refractive index at or near zero for a range of frequencies.Type: ApplicationFiled: August 1, 2019Publication date: October 7, 2021Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventors: Shizhao Liu, Joel L. Plawsky
-
Patent number: 10912227Abstract: Methods, systems, and assemblies for cooling an electronic component are disclosed. A heat sink assembly includes first and second substrates. The first substrate is in thermal contact with the electronic component. A primary channel is formed in the second surface of the first substrate. The primary channel is configured to direct cooling fluid for cooling the electronic component. An array of primary cooling fluid fins is positioned within the primary channel. The array of primary cooling fluid fins includes upstream solid fins and downstream open fins each having an upstream opening and downstream sidewalls. The secondary channel is formed within the second surface of the second substrate and is configured to direct partially heated cooling fluid away from the electronic component. An array of secondary cooling fluid fins is positioned within the secondary channel downstream. An enclosing layer seals the secondary channel.Type: GrantFiled: October 10, 2019Date of Patent: February 2, 2021Assignee: Rensselaer Polytechnic InstituteInventors: Corey Christopher Woodcock, Joel L. Plawsky, Yoav Peles, Xiangfei Yu
-
Publication number: 20200053913Abstract: Methods, systems, and assemblies for cooling an electronic component are disclosed. A heat sink assembly includes first and second substrates. The first substrate is in thermal contact with the electronic component. A primary channel is formed in the second surface of the first substrate. The primary channel is configured to direct cooling fluid for cooling the electronic component. An array of primary cooling fluid fins is positioned within the primary channel. The array of primary cooling fluid fins includes upstream solid fins and downstream open fins each having an upstream opening and downstream sidewalls. The secondary channel is formed within the second surface of the second substrate and is configured to direct partially heated cooling fluid away from the electronic component. An array of secondary cooling fluid fins is positioned within the secondary channel downstream. An enclosing layer seals the secondary channel.Type: ApplicationFiled: October 10, 2019Publication date: February 13, 2020Applicant: Rensselaer Polytechnic InstituteInventors: Corey Christopher Woodcock, Joel L. Plawsky, Yoav Peles, Xiangfei Yu
-
Patent number: 10492334Abstract: Methods, systems, and assemblies for cooling an electronic component are disclosed. A heat sink assembly includes first and second substrates. The first substrate is in thermal contact with the electronic component. A primary channel is formed in the second surface of the first substrate. The primary channel is configured to direct cooling fluid for cooling the electronic component. An array of primary cooling fluid fins is positioned within the primary channel. The array of primary cooling fluid fins includes upstream solid fins and downstream open fins each having an upstream opening and downstream sidewalls. The secondary channel is formed within the second surface of the second substrate and is configured to direct partially heated cooling fluid away from the electronic component. An array of secondary cooling fluid fins is positioned within the secondary channel downstream. An enclosing layer seals the secondary channel.Type: GrantFiled: January 12, 2018Date of Patent: November 26, 2019Assignee: Rensselaer Polytechnic InstituteInventors: Corey Christopher Woodcock, Joel L. Plawsky, Yoav Peles, Xiangfei Yu
-
Publication number: 20180199469Abstract: Methods, systems, and assemblies for cooling an electronic component are disclosed. A heat sink assembly includes first and second substrates. The first substrate is in thermal contact with the electronic component. A primary channel is formed in the second surface of the first substrate. The primary channel is configured to direct cooling fluid for cooling the electronic component. An array of primary cooling fluid fins is positioned within the primary channel. The array of primary cooling fluid fins includes upstream solid fins and downstream open fins each having an upstream opening and downstream sidewalls. The secondary channel is formed within the second surface of the second substrate and is configured to direct partially heated cooling fluid away from the electronic component. An array of secondary cooling fluid fins is positioned within the secondary channel downstream. An enclosing layer seals the secondary channel.Type: ApplicationFiled: January 12, 2018Publication date: July 12, 2018Applicant: Rensselaer Polytechnic InstituteInventors: Corey Christopher Woodcock, Joel L. Plawsky, Yoav Peles, Xiangfei Yu
-
Patent number: 8691385Abstract: Methods and apparatus for coating particulate material are provided. The apparatus includes a vessel having a top and a bottom, a vertically extending conduit having an inlet in the vessel and an outlet outside of the vessel, a first fluid inlet in the bottom of the vessel for introducing a transfer fluid, a second fluid inlet in the bottom of the vessel for introducing a coating fluid, and a fluid outlet from the vessel. The method includes steps of agitating a material, contacting the material with a coating material, and drying the coating material to produce a coated material. The invention may be adapted to coat aerogel beads, among other materials. A coated aerogel bead and an aerogel-based insulation material are also disclosed.Type: GrantFiled: July 18, 2012Date of Patent: April 8, 2014Assignee: Rensselaer Polytechnic InstituteInventors: Howard Littman, Joel L. Plawsky, John D. Paccione
-
Patent number: 8685237Abstract: An improved draft tube spout fluid bed (DTSFB) mixing, handling, conveying, and treating apparatus and systems, and methods for operating are provided. The apparatus and systems can accept particulate material and pneumatically or hydraulically conveying the material to mix and/or treat the material. In addition to conveying apparatus, a collection and separation apparatus adapted to receive the conveyed particulate material is also provided. The collection apparatus may include an impaction plate against which the conveyed material is directed to improve mixing and/or treatment. The improved apparatus are characterized by means of controlling the operation of the pneumatic or hydraulic transfer to enhance the mixing and/or reacting by controlling the flow of fluids, for example, air, into and out of the apparatus. The disclosed apparatus may be used to mix particulate material, for example, mortar; react fluids with particulate material; coat particulate material, or simply convey particulate material.Type: GrantFiled: November 6, 2009Date of Patent: April 1, 2014Assignee: Rensselaer Polytechnic InstituteInventors: Howard Littman, Joel L. Plawsky, John D. Paccione
-
Patent number: 8557336Abstract: Methods and apparatus for coating particulate material are provided. The apparatus includes a vessel having a top and a bottom, a vertically extending conduit having an inlet in the vessel and an outlet outside of the vessel, a first fluid inlet in the bottom of the vessel for introducing a transfer fluid, a second fluid inlet in the bottom of the vessel for introducing a coating fluid, and a fluid outlet from the vessel. The method includes steps of agitating a material, contacting the material with a coating material, and drying the coating material to produce a coated material. The invention may be adapted to coat aerogel beads, among other materials. A coated aerogel bead and an aerogel-based insulation material are also disclosed.Type: GrantFiled: July 18, 2012Date of Patent: October 15, 2013Assignee: Rensselaer Polytechnic InstituteInventors: Howard Littman, Joel L. Plawsky, John D. Paccione
-
Publication number: 20130017326Abstract: Methods and apparatus for coating particulate material are provided. The apparatus includes a vessel having a top and a bottom, a vertically extending conduit having an inlet in the vessel and an outlet outside of the vessel, a first fluid inlet in the bottom of the vessel for introducing a transfer fluid, a second fluid inlet in the bottom of the vessel for introducing a coating fluid, and a fluid outlet from the vessel. The method includes steps of agitating a material, contacting the material with a coating material, and drying the coating material to produce a coated material. The invention may be adapted to coat aerogel beads, among other materials. A coated aerogel bead and an aerogel-based insulation material are also disclosed.Type: ApplicationFiled: July 18, 2012Publication date: January 17, 2013Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventors: Howard LITTMAN, Joel L. PLAWSKY, John D. PACCIONE
-
Publication number: 20120295115Abstract: Methods and apparatus for coating particulate material are provided. The apparatus includes a vessel having a top and a bottom, a vertically extending conduit having an inlet in the vessel and an outlet outside of the vessel, a first fluid inlet in the bottom of the vessel for introducing a transfer fluid, a second fluid inlet in the bottom of the vessel for introducing a coating fluid, and a fluid outlet from the vessel. The method includes steps of agitating a material, contacting the material with a coating material, and drying the coating material to produce a coated material. The invention may be adapted to coat aerogel beads, among other materials. A coated aerogel bead and an aerogel-based insulation material are also disclosed.Type: ApplicationFiled: July 18, 2012Publication date: November 22, 2012Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventors: Howard LITTMAN, Joel L. PLAWSKY, John D. PACCIONE
-
Patent number: 8235577Abstract: Methods and apparatus for coating particulate material are provided. The apparatus includes a vessel having a top and a bottom, a vertically extending conduit having an inlet in the vessel and an outlet outside of the vessel, a first fluid inlet in the bottom of the vessel for introducing a transfer fluid, a second fluid inlet in the bottom of the vessel for introducing a coating fluid, and a fluid outlet from the vessel. The method includes steps of agitating a material, contacting the material with a coating material, and drying the coating material to produce a coated material. The invention may be adapted to coat aerogel beads, among other materials. A coated aerogel bead and an aerogel-based insulation material are also disclosed.Type: GrantFiled: November 14, 2007Date of Patent: August 7, 2012Assignee: Rensselaer Polytechnic InstituteInventors: Howard Littman, Joel L. Plawsky, John D. Paccione
-
Publication number: 20100051560Abstract: An improved draft tube spout fluid bed (DTSFB) mixing, handling, conveying, and treating apparatus and systems, and methods for operating are provided. The apparatus and systems can accept particulate material and pneumatically or hydraulically conveying the material to mix and/or treat the material. In addition to conveying apparatus, a collection and separation apparatus adapted to receive the conveyed particulate material is also provided. The collection apparatus may include an impaction plate against which the conveyed material is directed to improve mixing and/or treatment. The improved apparatus are characterized by means of controlling the operation of the pneumatic or hydraulic transfer to enhance the mixing and/or reacting by controlling the flow of fluids, for example, air, into and out of the apparatus. The disclosed apparatus may be used to mix particulate material, for example, mortar; react fluids with particulate material; coat particulate material, or simply convey particulate material.Type: ApplicationFiled: November 6, 2009Publication date: March 4, 2010Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventors: Howard LITTMAN, Joel L. PLAWSKY, John D. PACCIONE
-
Patent number: 7621668Abstract: An improved draft tube spout fluid bed (DTSFB) mixing, handling, conveying, and treating apparatus and systems, and methods for operating are provided. The apparatus and systems can accept particulate material and pneumatically or hydraulically conveying the material to mix and/or treat the material. In addition to conveying apparatus, a collection and separation apparatus adapted to receive the conveyed particulate material is also provided. The collection apparatus may include an impaction plate against which the conveyed material is directed to improve mixing and/or treatment. The improved apparatus are characterized by means of controlling the operation of the pneumatic or hydraulic transfer to enhance the mixing and/or reacting by controlling the flow of fluids, for example, air, into and out of the apparatus. The disclosed apparatus may be used to mix particulate material, for example, mortar; react fluids with particulate material; coat particulate material, or simply convey particulate material.Type: GrantFiled: December 5, 2006Date of Patent: November 24, 2009Assignee: Rensselaer Polytechnic InstituteInventors: Howard Littman, Joel L. Plawsky, John D. Paccione
-
Publication number: 20080130399Abstract: An improved draft tube spout fluid bed (DTSFB) mixing, handling, conveying, and treating apparatus and systems, and methods for operating are provided. The apparatus and systems can accept particulate material and pneumatically or hydraulically conveying the material to mix and/or treat the material. In addition to conveying apparatus, a collection and separation apparatus adapted to receive the conveyed particulate material is also provided. The collection apparatus may include an impaction plate against which the conveyed material is directed to improve mixing and/or treatment. The improved apparatus are characterized by means of controlling the operation of the pneumatic or hydraulic transfer to enhance the mixing and/or reacting by controlling the flow of fluids, for example, air, into and out of the apparatus. The disclosed apparatus may be used to mix particulate material, for example, mortar; react fluids with particulate material; coat particulate material, or simply convey particulate material.Type: ApplicationFiled: December 5, 2006Publication date: June 5, 2008Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventors: Howard Littman, Joel L. Plawsky, John D. Paccione
-
Publication number: 20080113197Abstract: Methods and apparatus for coating particulate material are provided. The apparatus includes a vessel having a top and a bottom, a vertically extending conduit having an inlet in the vessel and an outlet outside of the vessel, a first fluid inlet in the bottom of the vessel for introducing a transfer fluid, a second fluid inlet in the bottom of the vessel for introducing a coating fluid, and a fluid outlet from the vessel. The method includes steps of agitating a material, contacting the material with a coating material, and drying the coating material to produce a coated material. The invention may be adapted to coat aerogel beads, among other materials. A coated aerogel bead and an aerogel-based insulation material are also disclosed.Type: ApplicationFiled: November 14, 2007Publication date: May 15, 2008Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventors: Howard Littman, Joel L. Plawsky, John D. Paccione
-
Patent number: 4662749Abstract: A system for the simultaneous measurement of the size and velocities of bubbles or drops in a multiphase process environment wherein light passing through a Ronchi grating is projected onto a measurement volume within the multiphase process stream by a coherent fiber optic bundle and a gradient index imaging lens. Drops or bubbles passing through the measurement volume reflect or refract light which is sensed by velocity and size sensor fiber optic bundles disposed opposite the imaging lens and the sensed signal is coupled to signal processing means which convert the light signal to electrical signals and the appropriate size velocity measurments are made using one or more of the visibility techniques, phase lag techniques or transit time techniques.Type: GrantFiled: November 8, 1985Date of Patent: May 5, 1987Assignee: Massachusetts Institute of TechnologyInventors: T. Alan Hatton, Joel L. Plawsky