Patents by Inventor Ahmed Busnaina
Ahmed Busnaina 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: 8937293Abstract: The invention provides a fast, scalable, room temperature process for fabricating metallic nanorods from nanoparticles or fabricating metallic or semiconducting nanorods from carbon nanotubes suspended in an aqueous solution. The assembled nanorods are suitable for use as nanoscale interconnects in CMOS-based devices and sensors. Metallic nanoparticles or carbon nanotubes are assembled into lithographically patterned vias by applying an external electric field. Since the dimensions of nanorods are controlled by the dimensions of vias, the nanorod dimensions can be scaled down to the low nanometer range. The aqueous assembly process is environmentally friendly and can be used to make nanorods using different types of metallic particles as well as semiconducting and metallic nanaotubes.Type: GrantFiled: October 1, 2010Date of Patent: January 20, 2015Assignee: Northeastern UniversityInventors: Ahmed Busnaina, Cihan Yilmaz, TaeHoon Kim, Sivasubramanian Somu
-
Publication number: 20140318967Abstract: Damascene templates have two-dimensionally patterned raised metal features disposed on an underlying conductive layer extending across a substrate. The templates are topographically flat overall, and the patterned conductive features establish micron-scale and nanometer-scale patterns for the assembly of nanoelements into nanoscale circuits and sensors. The templates are made using microfabrication techniques together with chemical mechanical polishing. These templates are compatible with various directed assembly techniques, including electrophoresis, and offer essentially 100% efficient assembly and transfer of nanoelements in a continuous operation cycle. The templates can be repeatedly used for transfer of patterned nanoelements thousands of times with minimal or no damage, and the transfer process involves no intermediate processes between cycles. The assembly and transfer processes employed are carried out at room temperature and pressure and are thus amenable to low cost, high-rate device production.Type: ApplicationFiled: November 8, 2012Publication date: October 30, 2014Inventors: Ahmed Busnaina, Hanchul Cho, Sivasubramanian Somu, Jun Huang
-
Patent number: 8841239Abstract: Nanoscale patterns prepared by lithography are used to direct the self-assembly of amphiphilic molecules to form patterned nanosubstrates having a desired distribution of chemical functional moieties. These patterns can be fabricated over a large area and require no special limitations on the chemistry the assembled amphiphiles. Hydrophilic/hydrophobic patterns can be created and used to direct the deposition of a single functional component to specific regions of the surface or to selectively assemble polymer blends to desired sites in a one step fashion with high specificity and selectivity. The selective deposition of functional moieties on a patterned surface can be based on electrostatic forces, hydrogen bonding, or hydrophobic interactions.Type: GrantFiled: November 21, 2008Date of Patent: September 23, 2014Assignees: Northeastern University, University of MassachusettsInventors: Ahmed A. Busnaina, Joey L. Mead, Carol M. F. Barry, Ming Wei
-
Publication number: 20140227722Abstract: Nanosubstrates as biosensors, methods of making such nanosubstrates, and methods of using such nanosubstrates to detect biomarkers are described.Type: ApplicationFiled: March 7, 2014Publication date: August 14, 2014Applicant: Northeastern UniversityInventors: Asanterabi Malima, Ahmed Busnaina, Salome Siavoshi, Sivasubramanian Somu, Cihan Yilmaz, Tiziana Musacchio, Jaydev Upponi, Vladimir Torchilin
-
Publication number: 20140202860Abstract: A non-volatile bistable nano-electromechanical switch is provided for use in memory devices and microprocessors. The switch employs carbon nanotubes as the actuation element. A method has been developed for fabricating nanoswitches having one single-walled carbon nanotube as the actuator. The actuation of two different states can be achieved using the same low voltage for each state.Type: ApplicationFiled: December 26, 2013Publication date: July 24, 2014Applicant: Northeastern UniversityInventors: Sivasubramanian Somu, Ahmed Busnaina, Nicol McGruer, Peter Ryan, George G. Adams, Xugang Xiong, Taehoon Kim
-
Patent number: 8784673Abstract: Methods for fabricating templates for nanoelement assembly and methods for fluid-guided assembly of nanoelements are provided. Templates are fabricated by plasma modification of surface hydrophilicity and production of a network of hydrophobic trenches having a hydrophilic bottom surface. Single-walled carbon nanotubes (SWNT) can be assembled into stable films, ribbons, and wires of nanoscale thickness and nanoscale or microscale width and length. The nanofilm assemblies prepared according to the invention are highly conductive and can be used in the fabrication of a wide variety of microscale and nanoscale electronic devices.Type: GrantFiled: November 16, 2009Date of Patent: July 22, 2014Assignee: Northeastern UniversityInventors: Xugang Xiong, Laila Jaberansari, Ahmed Busnaina, Yung Joon Jung, Sivasubramanian Somu, Moneesh Upmanyu
-
Publication number: 20140197046Abstract: A carbon nanotube-based micron scale chemical sensor or sensor array is provided that enables the remote detection of hydrogen sulfide and other chemicals in a gas stream. The sensor is suitable for use in harsh environments of high temperature and pressure such as those encountered during petrochemical exploration and recovery. Multiplex sensor devices detect two or more chemical agents simultaneously, or they can detect conditions such as pressure, salinity, humidity, pH, or scale-forming ions. Incorporation of read out electronics and an RF signal generator into the sensor device enables it to communicate to a relay station or receiver for 3D mapping or other analysis. Methods are also provided for fabricating the chemical sensor device and using the device for detection.Type: ApplicationFiled: August 20, 2012Publication date: July 17, 2014Applicant: NORTHEASTERN UNIVERSITYInventors: Ahmed Busnaina, Yung Joon Jung, Sivasubramanian Somu, Aniket Datar, Young Lae Kim
-
Patent number: 8703501Abstract: The present invention provides a method for directed assembly of a conducting polymer. A method of the invention comprises providing a template such as an insulated template and electrophorectically assembling a conducting polymer thereon. Preferably, the template comprises a patterned electrode on which the conducting polymer is assembled. Moreover, the invention provides a method for transferring an assembled conducting polymer. For example, a method of the invention comprises providing a substrate such as a polymeric substrate and contacting a surface thereof with an assembled conducting polymer. The assembled conducting polymer can be disposed on a patterned electrode of a template, hi one embodiment, a method comprises removing the substrate. By removing the substrate, the assembled conducting polymer is transferred from the patterned electrode of the template to the substrate. The invention also provides a device with a template or substrate comprising an assembled conducting polymer.Type: GrantFiled: June 7, 2006Date of Patent: April 22, 2014Assignee: Northeastern UniversityInventors: Joey L. Mead, Carol M. F. Barry, Ahmed Busnaina, Ming Wei, Zhenghong Tao
-
Publication number: 20140093769Abstract: Carbon nanotube-based electrode materials for rechargeable batteries have a vastly increased power density and charging rate compared to conventional lithium ion batteries. The electrodes are based on a carbon nanotube scaffold that is coated with a thin layer of electrochemically active material in the form of nanoparticles. Alternating layers of carbon nanotubes and electrochemically active nanoparticles further increases the power density of the batteries. Rechargeable batteries made with the electrodes have a 100 to 10000 times increased power density compared to conventional lithium-ion rechargeable batteries and a charging rate increased by up to 100 times.Type: ApplicationFiled: May 21, 2012Publication date: April 3, 2014Applicant: NORTHEASTERN UNIVERSITYInventors: Ahmed Busnaina, Sivasubramanian Somu, Ankita Shah
-
Patent number: 8668978Abstract: Nanosubstrates as biosensors, methods of making such nanosubstrates, and methods of using such nanosubstrates to detect biomarkers are described.Type: GrantFiled: September 2, 2010Date of Patent: March 11, 2014Assignee: Northeastern UniversityInventors: Asanterabi Malima, Ahmed Busnaina, Salome Siavoshi, Sivasubramanian Somu, Cihan Yilmaz, Tiziana Musacchio, Jaydev Upponi, Vladimir Torchilin
-
Patent number: 8637356Abstract: A non-volatile bistable nano-electromechanical switch is provided for use in memory devices and microprocessors. The switch employs carbon nanotubes as the actuation element. A method has been developed for fabricating nanoswitches having one single-walled carbon nanotube as the actuator. The actuation of two different states can be achieved using the same low voltage for each state.Type: GrantFiled: June 27, 2012Date of Patent: January 28, 2014Assignee: Northeastern UniversityInventors: Sivasubramanian Somu, Ahmed Busnaina, Nicol McGruer, Peter Ryan, George G. Adams, Xugang Xiong, Taehoon Kim
-
Publication number: 20130287999Abstract: A method for assembling colloidal particles onto a substrate surface through fluid transport. The method comprises placing a first fluid placed adjacent to the substrate surface, applying a colloidal dispersion on top of the first fluid layer and removal of the first fluid layer. The method is extremely versatile, and is especially useful in depositing colloidal materials in high aspect ratio channels and vias without the need for prior treatment of the surface.Type: ApplicationFiled: June 7, 2011Publication date: October 31, 2013Applicant: NORTHEASTERN UNIVERSITYInventors: Nam-Goo Cha, Yolanda Ehegoyen, Ahmed Busnaina, Taehoon Kim
-
Publication number: 20130256013Abstract: A method for high rate assembly of nanoelements into two-dimensional void patterns on a non-conductive substrate surface utilizes an applied electric field to stabilize against forces resulting from pulling the substrate through the surface of a nanoelement suspension. The electric field contours emanating from a conductive layer in the substrate, covered by an insulating layer, are modified by a patterned photoresist layer, resulting in an increased driving force for nanoelements to migrate from a liquid suspension to voids on a patterned substrate having a non-conductive surface. The method can be used for the production of micro scale and nanoscale circuits, sensors, and other electronic devices.Type: ApplicationFiled: November 29, 2011Publication date: October 3, 2013Applicant: NORTHEASTERN UNIVERSITYInventors: Asli Sirman, Ahmed Busnaina, Cihan Yilmaz, Jun Huang, Sivasubramanian Somu
-
Publication number: 20130206165Abstract: This invention relates to apparatuses and methods for cleaning surfaces, including the surfaces of semiconductor wafers, with ultrasonic and megasonic energies of defined profiles, capable of achieving said cleaning without causing damage to nanodimensioned features of the substrates.Type: ApplicationFiled: March 3, 2011Publication date: August 15, 2013Inventors: Ahmed Busnaina, Pegah Karimi, Jingoo Park
-
Patent number: 8362618Abstract: An assembly of nanoelements forms a three-dimensional nanoscale circuit interconnect for use in microelectronic devices. A process for producing the circuit interconnect includes using dielectrophoresis by applying an electrical field across a gap between vertically displaced non-coplanar microelectrodes in the presence of a liquid suspension of nanoelements such as nanoparticles or single-walled carbon nanotubes to form a nanoelement bridge connecting the microelectrodes. The assembly process can be carried out at room temperature, is compatible with conventional semiconductor fabrication, and has a high yield. The current-voltage curves obtained from the nanoelement bridge demonstrate that the assembly is functional with a resistance of ?40 ohms for gold nanoparticles. The method is suitable for making high density three-dimensional circuit interconnects, vertically integrated nanosensors, and for in-line testing of manufactured conductive nanoelements.Type: GrantFiled: November 8, 2007Date of Patent: January 29, 2013Assignee: Northeastern UniversityInventors: Ahmed Busnaina, Mehmet R. Dokmeci, Nishant Khanduja, Selvapraba Selvarasah, Xugang Xiong, Prashanth Makaram, Chia-Ling Chen
-
Publication number: 20120326310Abstract: The invention provides a fast, scalable, room temperature process for fabricating metallic nanorods from nanoparticles or fabricating metallic or semiconducting nanorods from carbon nanotubes suspended in an aqueous solution. The assembled nanorods are suitable for use as nanoscale interconnects in CMOS-based devices and sensors. Metallic nanoparticles or carbon nanotubes are assembled into lithographically patterned vias by applying an external electric field. Since the dimensions of nanorods are controlled by the dimensions of vias, the nanorod dimensions can be scaled down to the low nanometer range. The aqueous assembly process is environmentally friendly and can be used to make nanorods using different types of metallic particles as well as semiconducting and metallic nanaotubes.Type: ApplicationFiled: October 1, 2010Publication date: December 27, 2012Inventors: Ahmed Busnaina, Cihan Yilmaz, TaeHoon Kim, Sivasubramanian Somu
-
Publication number: 20120267223Abstract: A non-volatile bistable nano-electromechanical switch is provided for use in memory devices and microprocessors. The switch employs carbon nanotubes as the actuation element. A method has been developed for fabricating nanoswitches having one single-walled carbon nanotube as the actuator. The actuation of two different states can be achieved using the same low voltage for each state.Type: ApplicationFiled: June 27, 2012Publication date: October 25, 2012Applicant: NORTHEASTERN UNIVERSITYInventors: Sivasubramanian Somu, Ahmed Busnaina, Nicol McGruer, Peter Ryan, George G. Adams, Xugang Xiong, Taehoon Kim
-
Patent number: 8211765Abstract: A non-volatile bistable nano-electromechanical switch is provided for use in memory devices and microprocessors. The switch employs carbon nanotubes as the actuation element. A method has been developed for fabricating nanoswitches having one single-walled carbon nanotube as the actuator. The actuation of two different states can be achieved using the same low voltage for each state.Type: GrantFiled: September 9, 2011Date of Patent: July 3, 2012Assignee: Northeastern UniversityInventors: Sivasubramanian Somu, Ahmed Busnaina, Nicol McGruer, Peter Ryan, George G. Adams, Xugang Xiong, Taehoon Kim
-
Publication number: 20120052649Abstract: A non-volatile bistable nano-electromechanical switch is provided for use in memory devices and microprocessors. The switch employs carbon nanotubes as the actuation element. A method has been developed for fabricating nanoswitches having one single-walled carbon nanotube as the actuator. The actuation of two different states can be achieved using the same low voltage for each state.Type: ApplicationFiled: September 9, 2011Publication date: March 1, 2012Applicant: NORTHEASTERN UNIVERSITYInventors: Sivasubramanian Somu, Ahmed Busnaina, Nicol McGruer, Peter Ryan, George G. Adams, Xugang Xiong, Taehoon Kim
-
Patent number: 8031514Abstract: A non-volatile bistable nano-electromechanical switch is provided for use in memory devices and microprocessors. The switch employs carbon nanotubes as the actuation element. A method has been developed for fabricating nanoswitches having one single-walled carbon nanotube as the actuator. The actuation of two different states can be achieved using the same low voltage for each state.Type: GrantFiled: April 9, 2008Date of Patent: October 4, 2011Assignee: Northeastern UniversityInventors: Sivasubramanian Somu, Ahmed Busnaina, Nicol McGruer, Peter Ryan, George G. Adams, Xugang Xiong, Taehoon Kim