Patents by Inventor Amar Basu
Amar Basu 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).
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Patent number: 8944084Abstract: In a method of moving droplets, local heat is applied to a surface portion of a droplet for an amount of time sufficient to create a Marangoni flow in the droplet. Droplets are suspended in an emulsion in a carrier liquid on a substrate. A laser beam is used to move one of the droplets. the droplet consists of a first substance and a carrier liquid consists of a second substance that is not mixable with the first substance. The droplet is placed in the carrier liquid, and the mixture is emulsified. The emulsified mixture is placed on a substrate. Then the local heat is applied to the surface of the droplet. The first substance may include oil and the second substance may include water.Type: GrantFiled: June 4, 2012Date of Patent: February 3, 2015Assignee: Wayne State UniversityInventors: Amar Basu, Gopakumar Kamalakshakurup
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Publication number: 20140150887Abstract: In a method of moving droplets, local heat is applied to a surface portion of a droplet for an amount of time sufficient to create a Marangoni flow in the droplet. Droplets are suspended in an emulsion in a carrier liquid on a substrate. A laser beam is used to move one of the droplets. the droplet consists of a first substance and a carrier liquid consists of a second substance that is not mixable with the first substance. The droplet is placed in the carrier liquid, and the mixture is emulsified. The emulsified mixture is placed on a substrate. Then the local heat is applied to the surface of the droplet. The first substance may include oil and the second substance may include water.Type: ApplicationFiled: June 4, 2012Publication date: June 5, 2014Applicant: WAYNE STATE UNIVERSITYInventors: Amar Basu, Gopakumar Kamalakshakurup
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Patent number: 8394625Abstract: This invention generally relates to an integrated ‘lab-on-a-Pipette’™ which will provide sample-to-answer single cell genetic diagnosis for preimplantation genetic diagnosis (PGD) and other forms of single cell analysis (SCA). SCA is a quickly growing field with substantial impact in prenatal testing, cancer biopsies, diabetes, stem cell research, and our overall understanding of heterogeneity in biology. However, single cell genetic analysis is challenging, inaccurate, and in many cases impossible, due to the small amount of sample (5 pg), and difficulties in handling small sample volumes (50-100 pL). The ‘lab-on-a-pipette’ device integrates a microaspiration tip with microfluidic analysis components to conduct in-situ, real-time single cell genetic diagnosis in a single device. The microaspiration tip extracts and encapsulate a cell into an ultra-low volume plug (˜300 pL).Type: GrantFiled: May 2, 2011Date of Patent: March 12, 2013Inventors: Angelo Gaitas, Amar Basu
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Patent number: 8192809Abstract: The present invention is a method for localized chemical vapor deposition (CVD) for localized growing for example for carbon nanotubes (CNT), nanowires, and oxidation using a heated tip or an array of heated tips to locally heat the area of interest. As the tips moved, material such as CNTs grows in the direction of movement. The Scanning Probe Growth (SPG) or nanoCVD technique has similarities to the CVD growth; however it allows for controlled synthesis and direction and eliminates the need for masks.Type: GrantFiled: May 11, 2009Date of Patent: June 5, 2012Assignee: Picocal, IncInventors: Angelo Gaitas, Bhaskar Mitra, Amar Basu, Weibin Zhu
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Publication number: 20110269121Abstract: This invention generally relates to an integrated ‘Lab-on-a-Pipette™’ which will provide sample-to-answer single cell genetic diagnosis for preimplantation genetic diagnosis (PGD) and other forms of single cell analysis (SCA). SCA is a quickly growing field with substantial impact in prenatal testing, cancer biopsies, diabetes, stem cell research, and our overall understanding of heterogeneity in biology. However, single cell genetic analysis is challenging, inaccurate, and in many cases impossible, due to the small amount of sample (5 pg), and difficulties in handling small sample volumes (50-100 pL). The ‘lab-on-a-pipette’ device integrates a microaspiration tip with microfluidic analysis components to conduct in-situ, real-time single cell genetic diagnosis in a single device. The microaspiration tip extracts and encapsulate a cell into an ultra-low volume plug (˜300 pL).Type: ApplicationFiled: May 2, 2011Publication date: November 3, 2011Inventors: Angelo Gaitas, Amar Basu
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Publication number: 20100055349Abstract: The present invention is a method for localized chemical vapor deposition (CVD) for localized growing for example for carbon nanotubes (CNT), nanowires, and oxidation using a heated tip or an array of heated tips to locally heat the area of interest. As the tips moved, material such as CNTs grows in the direction of movement. The Scanning Probe Growth (SPG) or nanoCVD technique has similarities to the CVD growth; however it allows for controlled synthesis and direction and eliminates the need for masks.Type: ApplicationFiled: May 11, 2009Publication date: March 4, 2010Inventors: Angelo Gaitas, Bhaskar Mitra, Amar Basu, Weibin Zhu
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Publication number: 20070205837Abstract: In various embodiments, the invention provides a clock generator and/or a timing and frequency reference, with multiple operating modes, such power conservation, clock, reference, and pulsed modes. The various apparatus embodiments include a resonator adapted to provide a first signal having a resonant frequency; an amplifier; a temperature compensator adapted to modify the resonant frequency in response to temperature; and a process variation compensator adapted to modify the resonant frequency in response to fabrication process variation. In addition, the various embodiments may also include a frequency divider adapted to divide the first signal having the resonant frequency into a plurality of second signals having a corresponding plurality of frequencies substantially equal to or lower than the resonant frequency; and a frequency selector adapted to provide an output signal from the plurality of second signals.Type: ApplicationFiled: April 28, 2007Publication date: September 6, 2007Applicant: Mobius Microsystems, Inc.Inventors: Michael McCorquodale, Scott Pernia, Amar Basu
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Patent number: 7073938Abstract: A relatively simple and inexpensive micromachined arrayed thermal probe apparatus, system for thermal scanning a sample in a contact mode and cantilevered reference probe for use therein can be used for a variety of microscopy and microcalorimetry applications ranging from the monitoring of processes in semiconductor manufacturing to the characterization of nano-scale materials, imaging of biological cells, and even data storage. Probes are designed to have very high thermal isolation and high mechanical compliance, providing advantages in both performance and ease of operation. In particular, an array of probes can be used for high throughput contact mode scanning of soft samples without mechanical feedback, and can, therefore, be used in wide arrays for high-speed measurements over large sample surfaces. The probes are preferably manufactured by a photolithographic fabrication process, which permits large numbers of probes to be made in a uniform and reproducible manner at low cost.Type: GrantFiled: January 19, 2004Date of Patent: July 11, 2006Assignee: The Regents of the University of MichiganInventors: Yogesh B. Gianchandani, Shamus P. McNamara, Joohyung Lee, Amar Basu
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Publication number: 20060071718Abstract: Exemplary embodiments of the invention provide a system, method and apparatus for frequency calibration of a free-running, harmonic oscillator. A reference oscillator provides a reference frequency. An exemplary system comprises the harmonic oscillator, a frequency divider, a comparator, and a reactance modulator. The oscillator comprises a plurality of switchable reactance modules and a coefficient register, and provides an oscillation signal having an oscillation frequency. The frequency divider provides an output frequency as a fraction of the oscillation frequency. The comparator compares the output and reference frequencies and provides a comparison signal when the output frequency is not substantially equal to the reference frequency.Type: ApplicationFiled: September 20, 2005Publication date: April 6, 2006Applicant: Mobius Microsystems, Inc.Inventors: Michael McCorquodale, Scott Pernia, Sundus Kubba, Amar Basu
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Publication number: 20050206462Abstract: In various embodiments, the invention provides a clock generator and/or a timing and frequency reference, with multiple operating modes, such power conservation, clock, reference, and pulsed modes. The various apparatus embodiments include a resonator adapted to provide a first signal having a resonant frequency; an amplifier; a temperature compensator adapted to modify the resonant frequency in response to temperature; and a process variation compensator adapted to modify the resonant frequency in response to fabrication process variation. In addition, the various embodiments may also include a frequency divider adapted to divide the first signal having the resonant frequency into a plurality of second signals having a corresponding plurality of frequencies substantially equal to or lower than the resonant frequency; and a frequency selector adapted to provide an output signal from the plurality of second signals.Type: ApplicationFiled: March 21, 2005Publication date: September 22, 2005Applicant: Mobius Microsystems, Inc.Inventors: Michael McCorquodale, Scott Pernia, Amar Basu
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Publication number: 20040202226Abstract: A relatively simple and inexpensive micromachined arrayed thermal probe apparatus, system for thermal scanning a sample in a contact mode and cantilevered reference probe for use therein can be used for a variety of microscopy and microcalorimetry applications ranging from the monitoring of processes in semiconductor manufacturing to the characterization of nano-scale materials, imaging of biological cells, and even data storage. Probes are designed to have very high thermal isolation and high mechanical compliance, providing advantages in both performance and ease of operation. In particular, an array of probes can be used for high throughput contact mode scanning of soft samples without mechanical feedback, and can, therefore, be used in wide arrays for high-speed measurements over large sample surfaces. The probes are preferably manufactured by a photolithographic fabrication process, which permits large numbers of probes to be made in a uniform and reproducible manner at low cost.Type: ApplicationFiled: January 19, 2004Publication date: October 14, 2004Inventors: Yogesh B. Gianchandani, Shamus P. McNamara, Joohyung Lee, Amar Basu