Patents by Inventor Aditya Rajagopal

Aditya Rajagopal 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: 8883645
    Abstract: Methods for fabrication of nanopillar field effect transistors are described. These transistors can have high height-to-width aspect ratios and be CMOS compatible. Silicon nitride may be used as a masking material. These transistors have a variety of applications, for example they can be used for molecular sensing if the nanopillar has a functionalized layer contacted to the gate electrode. The functional layer can bind molecules, causing an electrical signal in the transistor.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: November 11, 2014
    Assignee: California Institute of Technology
    Inventors: Chieh-Feng Chang, Aditya Rajagopal, Axel Scherer
  • Patent number: 8841712
    Abstract: A field effect nano-pillar transistor has a pillar shaped gate element incorporating a biomimitec portion that provides various advantages over prior art devices. The small size of the nano-pillar transistor allows for advantageous insertion into cellular membranes, and the biomimitec character of the gate element operates as an advantageous interface for sensing small amplitude voltages such as transmembrane cell potentials. The nano-pillar transistor can be used in various embodiments to stimulate cells, to measure cell response, or to perform a combination of both actions.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: September 23, 2014
    Assignee: California Institute of Technology
    Inventors: Aditya Rajagopal, Axel Scherer, Michael D. Henry, Sameer Walavalkar, Thomas A. Tombrello, Andrew P. Homyk
  • Patent number: 8838394
    Abstract: This disclosure provides methods, systems, compositions, and kits for the multiplexed detection of a plurality of analytes in a sample. In some examples, this disclosure provides methods, systems, compositions, and kits wherein multiple analytes may be detected in a single sample volume by acquiring a cumulative measurement or measurements of at least one quantifiable component of a signal. In some cases, additional components of a signal, or additional signals (or components thereof) are also quantified. Each signal or component of a signal may be used to construct a coding scheme which can then be used to determine the presence or absence of any analyte.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: September 16, 2014
    Assignee: California Institute of Technology
    Inventors: Emil Kartalov, Aditya Rajagopal, Axel Scherer
  • Patent number: 8787752
    Abstract: The present disclosure describes an optically powered transducer with a photovoltaic collector. An optical fiber power delivery method and system and a free space power delivery method are also provided. A fabrication process for making an optically powered transducer is further described, together with an implantable transducer system based on optical power delivery.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: July 22, 2014
    Assignee: California Institute of Technology
    Inventors: Axel Scherer, Aditya Rajagopal, Seheon Kim, Andrew P. Homyk
  • Patent number: 8707545
    Abstract: A printed circuit board structure is coated with an encapsulant within which microfluidic channels have been formed. The microfluidic channels are formed by soldering fluidic connections to metal traces on a surface of the printed circuit board structure prior to encapsulation. The metal traces are removed by etching after encapsulation to form microchannels within the encapsulant.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: April 29, 2014
    Assignee: California Institute of Technology
    Inventors: Samson Chen, Aditya Rajagopal, Axel Scherer
  • Publication number: 20130327645
    Abstract: Methods and devices for sequencing nucleic acids are disclosed herein. Devices are also provided herein for measuring DNA with nano-pores sized to allow DNA to pass through the nano-pore. The capacitance can be measured for the DNA molecule passing through the nano-pore. The capacitance measurements can be correlated to determine the sequence of base pairs passing through the nano-pore to sequence the DNA.
    Type: Application
    Filed: August 14, 2013
    Publication date: December 12, 2013
    Applicant: California Institute of Technology
    Inventors: Sameer Walavalkar, Axel Scherer, Thomas A. Tombrello, Aditya Rajagopal, Andrew P. Homyk, Erika Garcia
  • Publication number: 20130323716
    Abstract: This disclosure provides methods, systems, compositions, and kits for the multiplexed detection of a plurality of analytes in a sample. In some examples, this disclosure provides methods, systems, compositions, and kits wherein multiple analytes may be detected in a single sample volume by acquiring a cumulative measurement or measurements of at least one quantifiable component of a signal. In some cases, additional components of a signal, or additional signals (or components thereof) are also quantified. Each signal or component of a signal may be used to construct a coding scheme which can then be used to determine the presence or absence of any analyte.
    Type: Application
    Filed: February 1, 2013
    Publication date: December 5, 2013
    Applicant: California Institute of Technology
    Inventors: Emil Kartalov, Aditya Rajagopal, Axel Scherer
  • Patent number: 8574513
    Abstract: A printed circuit board structure is coated with an encapsulant within which microfluidic channels have been formed. The microfluidic channels are formed by soldering fluidic connections to metal traces on a surface of the printed circuit board structure prior to encapsulation. The metal traces are removed by etching after encapsulation to form microchannels within the encapsulant.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: November 5, 2013
    Assignee: California Institute of Technology
    Inventors: Samson Chen, Aditya Rajagopal, Axel Scherer
  • Patent number: 8535512
    Abstract: Methods and devices for sequencing nucleic acids are disclosed herein. Devices are also provided herein for measuring DNA with nano-pores sized to allow DNA to pass through the nano-pore. The capacitance can be measured for the DNA molecule passing through the nano-pore. The capacitance measurements can be correlated to determine the sequence of base pairs passing through the nano-pore to sequence the DNA.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: September 17, 2013
    Assignee: California Institute of Technology
    Inventors: Sameer Walavalkar, Axel Scherer, Thomas A. Tombrello, Aditya Rajagopal, Andrew P. Homyk, Erika Garcia
  • Patent number: 8506863
    Abstract: A method for adhering two layers of materials is described. An additional layer of material deposited on one of the layers is used. The additional layer of material is perforated and undercut by etching away one of the layers thereby generating anchor shaped holes. The other layer is then deposited on the additional layer filling the anchor shaped holes therefore, providing adhesion.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: August 13, 2013
    Assignee: California Institute of Technology
    Inventors: Axel Scherer, Aditya Rajagopal
  • Patent number: 8496889
    Abstract: A microfluidic device for separating emulsion solution into separate particles by passing the emulsion solution through a passive filter. The separated particles can then be sorted into separate chambers through active filtering.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: July 30, 2013
    Assignee: California Institute of Technology
    Inventors: Aditya Rajagopal, Michael Woods
  • Patent number: 8414785
    Abstract: Methods for fabrication of microfluidic systems on printed circuit boards (PCB) are described. The PCB contains layers of insulating material and a layer or layers of metal buried within layers of insulating material. The metal layers are etched away, leaving fully enclosed microfluidic channels buried within the layers of insulating material.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: April 9, 2013
    Assignee: California Institute of Technology
    Inventors: Christopher I. Walker, Aditya Rajagopal, Axel Scherer
  • Patent number: 8356763
    Abstract: Methods and arrangements to lyse a biological sample are described. The arrangements comprise a lysis tube containing the sample, one or more electromagnets generating a magnetic field, and one or more permanent magnets inside the lysis tube. The permanent magnets move and lyse the sample when a magnetic field is generated by the electromagnets.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: January 22, 2013
    Assignee: California Institute of Technology
    Inventors: Aditya Rajagopal, Axel Scherer, Mladen Barbic
  • Patent number: 8241547
    Abstract: A method for adhering two layers of materials is described. An additional layer of material deposited on one of the layers is used. The additional layer of material is perforated and undercut by etching away one of the layers thereby generating anchor shaped holes. The other layer is then deposited on the additional layer filling the anchor shaped holes therefore, providing adhesion.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: August 14, 2012
    Assignee: California Institute of Technology
    Inventors: Axel Scherer, Aditya Rajagopal
  • Patent number: 8201765
    Abstract: Methods and arrangements to lyse a biological sample are described. The arrangements comprise a lysis tube containing the sample, one or more electromagnets generating a magnetic field, and one or more permanent magnets inside the lysis tube. The permanent magnets move and lyse the sample when a magnetic field is generated by the electromagnets.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: June 19, 2012
    Assignee: California Institute of Technology
    Inventors: Aditya Rajagopal, Axel Scherer, Mladen Barbic
  • Publication number: 20120118739
    Abstract: Methods and devices for sequencing nucleic acids are disclosed herein. Devices are also provided herein for measuring DNA with nano-pores sized to allow DNA to pass through the nano-pore. The capacitance can be measured for the DNA molecule passing through the nano-pore. The capacitance measurements can be correlated to determine the sequence of base pairs passing through the nano-pore to sequence the DNA.
    Type: Application
    Filed: September 29, 2011
    Publication date: May 17, 2012
    Inventors: Sameer Walavalkar, Axel Scherer, Thomas A. Tombrello, Aditya Rajagopal, Andrew P. Homyk, Erika Garcia
  • Publication number: 20120080361
    Abstract: Methods and devices for isolating and sorting nanoparticles are disclosed herein. Nanopores of a desired size can be formed in silicon dioxide membranes and used as filters to separate nanoparticles. Devices are also provided herein for sorting nanoparticles with multiple filters having various sized nanopores.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 5, 2012
    Inventors: Sameer Walavalkar, Aditya Rajagopal, Axel Scherer, Thomas A. Tombrello
  • Publication number: 20110044694
    Abstract: The present disclosure describes an optically powered transducer with a photovoltaic collector. An optical fiber power delivery method and system and a free space power delivery method are also provided. A fabrication process for making an optically powered transducer is further described, together with an implantable transducer system based on optical power delivery.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 24, 2011
    Inventors: Axel Scherer, Aditya Rajagopal, Seheon Kim, Andrew P. Homyk
  • Publication number: 20100309112
    Abstract: Pixel devices, comprising ink particles differing in electrical charge, mass and/or shape contained within a fluidic structure, and related arrays methods and systems.
    Type: Application
    Filed: June 8, 2010
    Publication date: December 9, 2010
    Inventors: Aditya Rajagopal, Christopher I. Walker, Saurabh Vyawahare, Axel Scherer, Thomas A. Tombrello
  • Publication number: 20100126653
    Abstract: A method for adhering two layers of materials is described. An additional layer of material deposited on one of the layers is used. The additional layer of material is perforated and undercut by etching away one of the layers thereby generating anchor shaped holes. The other layer is then deposited on the additional layer filling the anchor shaped holes therefore, providing adhesion.
    Type: Application
    Filed: October 1, 2009
    Publication date: May 27, 2010
    Inventors: Axel Scherer, Aditya Rajagopal