Patents by Inventor Zhenan Bao

Zhenan Bao 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).

  • Method of manufacturing an organic semiconductor thin film
    Patent number: 9070881
    Abstract: A method of manufacturing an organic semiconductor thin film includes coating an organic semiconductor solution on a substrate, and shearing the organic semiconductor solution in a direction that results in a shearing stress being applied to the organic semiconductor solution to form the organic semiconductor thin film, wherein a speed of the shearing is controlled such that an intermolecular distance of the organic semiconductor solution is adjusted.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: June 30, 2015
    Assignees: Samsung Electronics Co., LTD., The Board of Trustees of the Leland Stanford Junior University
    Inventors: Zhenan Bao, Gaurav Giri, Sang-yoon Lee, Stefan Mannsfeld
  • SURFACE AREA-BASED PRESSURE SENSING
    Publication number: 20150168236
    Abstract: Various aspects of the instant disclosure relate to pressure sensing methods and apparatuses. As may be implemented in accordance with one or more embodiments, an apparatus includes a plurality of structures having respective surface areas that are implemented to contact at least one of an electrode and other ones of the structures. The structures operate with the electrode to provide an electrical indication of pressure by effecting a change in the respective surface areas in response to an elastic compression or expansion of the structures, and providing a change in electrical impedance between the structures and the electrode based on the change in the respective surface areas.
    Type: Application
    Filed: December 17, 2014
    Publication date: June 18, 2015
    Inventors: Zhenan Bao, Alex Chortos
  • SOLAR CELL HAVING ORGANIC NANOWIRES
    Publication number: 20150155508
    Abstract: Example embodiments relate to a solar cell including organic nanowires. The solar cell may include a photoelectric conversion layer formed of a p-type material including an organic material and an n-type material including organic nanowires.
    Type: Application
    Filed: February 11, 2015
    Publication date: June 4, 2015
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Young-jun PARK, Zhenan BAO, Joon-hak OH
  • Air-stable -channel organic electronic devices
    Patent number: 9040400
    Abstract: In connection with various example embodiments, an organic electronic device is provided with an organic material that is susceptible to decreased mobility due to the trapping of electron charge carriers in response to exposure to air. The organic material is doped with an n-type dopant that, when combined with the organic material, effects air stability for the doped organic material (e.g., exhibits a mobility that facilitates stable operation in air, such as may be similar to operation in inert environments). Other embodiments are directed to organic electronic devices n-doped and exhibiting such air stability.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: May 26, 2015
    Inventors: Peng Wei, Zhenan Bao, Joon Hak Oh
  • OFF-CENTER SPIN-COATING AND SPIN-COATED APPARATUSES
    Publication number: 20150123105
    Abstract: Various aspects of the instant disclosure are directed to methods and to apparatuses involving spin-coating and spin-coated materials. As may be implemented in connection with one or more embodiments, a solution having objects dispersed therein is applied to a substrate and the substrate is spun about an axis that is off-center relative to a center of the substrate. The objects are thus aligned along a predominantly unidirectional orientation. The solution is solidified with the objects aligned to one another along the predominantly unidirectional orientation.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventors: Zhenan Bao, Gaurav Giri, Yongbo Yuan, Jinsong Huang
  • CONJUGATED POLYMER-BASED APPARATUSES, ARTICLES AND COMPOUNDS
    Publication number: 20150105520
    Abstract: Various aspects of the present disclosure are directed to conjugated polymers, their manufacture and their implementations. As may be implemented in connection with one or more embodiments, an apparatus includes a conjugated polymer and a side chain or end chain material connected to the conjugated polymer. The amount and makeup of the side chain or end chain enhance solubility of the resulting modified conjugated polymer, relative to the conjugated polymer itself.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 16, 2015
    Inventors: Zhenan Bao, Lei Fang, Jianguo Mei, Yan Zhou
  • ORGANIC THIN-FILM TRANSISTOR SENSOR ARRANGEMENTS
    Publication number: 20150064798
    Abstract: A sensor includes an organic thin-film transistor (OTFT) that operates under low voltage conditions in an aqueous environment. According to an example embodiment, an OTFT includes an organic channel that electrically connects source and drain electrodes, with a gate electrode separated from the channel by a dielectric layer. The channel, gate and dielectric layer are arranged to facilitate switching of the channel region to pass current between the source and drain electrodes, in response to a low voltage applied to the gate electrode, when the channel is exposed to an aqueous solution. The current that is passed is indicative of characteristics of the aqueous solution, and is used to characterize the same. For various implementations, the low voltage operation of the sensor facilitates such characterization with substantially no ionic conduction through an analyte in the aqueous solution.
    Type: Application
    Filed: November 10, 2014
    Publication date: March 5, 2015
    Inventors: Zhenan Bao, Mark E. Roberts
  • Organic material-based graphitic material
    Patent number: 8957406
    Abstract: Various methods and apparatuses involve the provision of graphitic material. As consistent with one or more aspects herein, an organic material template is used to restrict growth, in a width dimension, of graphitic material grown from the organic material template. Graphitic material is therein provided, having a set of characteristics including electrical behavior and shape, with a representative width defined by the width dimension, based on the organic material template.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: February 17, 2015
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Anatoliy N. Sokolov, Fung Ling Yap, Zhenan Bao, Nan Liu
  • PASSIVE AND WIRELESS PRESSURE SENSOR
    Publication number: 20140350348
    Abstract: Aspects of the present disclosure are directed to pressure sensing. As may be implemented in accordance with one or more embodiments, an external energy field is applied to a resonant circuit having inductive conductors separated by a compressible dielectric, for wirelessly detecting pressure. Specifically, the resonant circuit is responsive to the energy field and applied pressures by operating in respective states exhibiting different resonant frequencies that are based upon pressure-related compression of the compressible dielectric. These resonant frequencies, or a change in the resonant frequencies, can be used as an indication of the pressure.
    Type: Application
    Filed: May 22, 2014
    Publication date: November 27, 2014
    Inventors: Chee-Keong Tee, Lisa Chen, Zhenan Bao, Darren Lipomi, Michael V. McConnell, H.S. Philip Wong, Ada Shuk Yan Poon
  • COATED SUBSTRATE APPARATUS AND METHOD
    Publication number: 20140318440
    Abstract: A coated substrate is formed with aligned objects such as small molecules, macromolecules and nanoscale particulates, such as inorganic, organic or inorganic/organic hybrid materials. In accordance with one or more embodiments, an apparatus or method involves an applicator having at least one surface patterned with protruded or indented features, and a coated substrate including a solution-based layer of objects having features and morphology attributes arranged as a function of the protruded or indented features.
    Type: Application
    Filed: April 28, 2014
    Publication date: October 30, 2014
    Inventors: Zhenan Bao, Ying Diao, Stefan Christian Bernhardt Mannsfeld, Chee-Keong Tee, Hector A. Becerril-Garcia, Yan Zhou
  • SINGLE-WALLED CARBON NANOTUBE-BASED PLANAR PHOTODECTOR
    Publication number: 20140319461
    Abstract: A single-walled carbon nanotube-based planar photodetector includes a substrate; a first electrode and a second electrode disposed on the substrate and spaced apart from each other; a plurality of single-walled carbon nanotubes, each of the plurality of single-walled carbon nanotubes contacting the first electrode and the second electrode; and an adsorbent attached to a surface of at least one of the plurality of single-walled carbon nanotubes, wherein the adsorbent is capable of doping the at least one of the plurality of single-walled carbon nanotubes by photo-excitation.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 30, 2014
    Applicants: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-jun PARK, Steve PARK, Zhenan BAO
  • Carbon-based semiconductors
    Patent number: 8866265
    Abstract: All-carbon-based semiconductor devices are provided. In accordance with an example embodiment, an apparatus includes n-type and p-type carbon-based semiconductor material that form a p-n junction, which are respectively coupled to electrodes having a carbon allotrope. A first one of electrodes is connected to the n-type material and a second one of the electrodes is connected to the p-type material, and collect charge presented at the p-n junction.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: October 21, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Zhenan Bao, Marc Ramuz, Michael Vosgueritchian
  • SORBENTS FOR CARBON DIOXIDE CAPTURE
    Publication number: 20140286844
    Abstract: Provided herein are sorbents for carbon dioxide (CO2) capture, such as from natural gas and coal-fired power plant flue gases, and uses thereof
    Type: Application
    Filed: March 14, 2014
    Publication date: September 25, 2014
    Inventors: Jennifer Wilcox, T. Daniel P. Stack, Zhenan Bao, Brannon Gary, Jiajun He, John To
  • METHOD OF MANUFACTURING AN ORGANIC SEMICONDUCTOR THIN FILM
    Publication number: 20140256085
    Abstract: A method of manufacturing an organic semiconductor thin film includes coating an organic semiconductor solution on a substrate, and shearing the organic semiconductor solution in a direction that results in a shearing stress being applied to the organic semiconductor solution to form the organic semiconductor thin film, wherein a speed of the shearing is controlled such that an intermolecular distance of the organic semiconductor solution is adjusted.
    Type: Application
    Filed: May 19, 2014
    Publication date: September 11, 2014
    Applicants: NATIONAL SCIENCE FOUNDATION, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Zhenan BAO, Gaurav GIRI, Sang-yoon LEE, Stefan MANNSFELD
  • Joined nanostructures and methods therefor
    Patent number: 8785763
    Abstract: Nanostructures are joined using one or more of a variety of materials and approaches. As consistent with various example embodiments, two or more nanostructures are joined at a junction between the nanostructures. The nanostructures may touch or be nearly touching at the junction, and a joining material is deposited and nucleates at the junction to couple the nanostructures together. In various applications, the nucleated joining material facilitates conductivity (thermal and/or electric) between the nanostructures. In some embodiments, the joining material further enhances conductivity of the nanostructures themselves, such as by growing along the nanostructures and/or doping the nanostructures.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: July 22, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Melburne C. LeMieux, Ajay Virkar, Zhenan Bao
  • FULLERENE-DOPED NANOSTRUCTURES AND METHODS THEREFOR
    Publication number: 20140138612
    Abstract: Nanostructures are doped to set conductivity characteristics. In accordance with various example embodiments, nanostructures such as carbon nanotubes are doped with a halogenated fullerene type of dopant material. In some implementations, the dopant material is deposited from solution or by vapor deposition, and used to dope the nanotubes to increase the thermal and/or electrical conductivity of the nanotubes.
    Type: Application
    Filed: September 9, 2013
    Publication date: May 22, 2014
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Ajay Virkar, Melburne C. LeMieux, Zhenan Bao
  • NANOSTRUCTURES WITH STRAIN-INDUCED RESISTANCE
    Publication number: 20140109695
    Abstract: Apparatuses and methods, consistent with embodiments herein, are directed to an apparatus having a stretchable substrate and a plurality of nanostructures. While the plurality of nanostructures are adhered to the stretchable substrate, the stretchable substrate and the nanostructures are stretched and/or operate in a stretched mode in which the nanostructures are characterized by a resistance corresponding to a strain imparted due to the stretching. When the substrate is relaxed or the stretching otherwise lessened, the nanostructures continue to be characterized as a function of the strain and the corresponding resistance, with buckled segments of the nanostructures being adhered along a surface of the substrate.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 24, 2014
    Inventors: Darren Lipomi, Michael Vosgueritchian, Chee-Keong Tee, Sondra Hellstrom, Zhenan Bao
  • ORGANIC MATERIAL-BASED GRAPHITIC MATERIAL
    Publication number: 20140103297
    Abstract: Various methods and apparatuses involve the provision of graphitic material. As consistent with one or more aspects herein, an organic material template is used to restrict growth, in a width dimension, of graphitic material grown from the organic material template. Graphitic material is therein provided, having a set of characteristics including electrical behavior and shape, with a representative width defined by the width dimension, based on the organic material template.
    Type: Application
    Filed: August 30, 2013
    Publication date: April 17, 2014
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Anatoliy N. Sokolov, Fung Ling Yap, Zhenan Bao, Nan Liu
  • METHOD OF MANUFACTURING AN ORGANIC SEMICONDUCTOR THIN FILM
    Publication number: 20140093997
    Abstract: A method of manufacturing an organic semiconductor thin film includes coating an organic semiconductor solution on a substrate, and shearing the organic semiconductor solution in a direction that results in a shearing stress being applied to the organic semiconductor solution to form the organic semiconductor thin film, wherein a speed of the shearing is controlled such that an intermolecular distance of the organic semiconductor solution is adjusted.
    Type: Application
    Filed: October 2, 2012
    Publication date: April 3, 2014
    Inventors: Jong Won CHUNG, Bon Won KOO, Zhenan BAO, Gaurav GIRI, Sang-yoon LEE, Yong-wan JIN
  • Method of manufacturing electric device, array of electric devices, and manufacturing method therefor
    Patent number: 8679984
    Abstract: An example embodiment relates to a method of manufacturing an array of electric devices that includes attaching a platform including a micro-channel structure to a substrate. The method includes injecting first and second solutions into the micro-channel structure to form at least three liquid film columns, where the first and second solutions include different solvent composition ratios and the liquid columns each, respectfully, include different solvent composition ratios. The method further includes detaching the platform the substrate, removing solvent from the liquid film columns to form thin film columns, and treating the thin film columns under different conditions along a length direction of the thin film columns. The solvent is removed from the thin film columns and the thin film columns are treated under different conditions along a length direction of the thin film columns.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: March 25, 2014
    Assignees: Samsung Electronics Co., Ltd., The United States of America as represented by the National Institutes of Health (NIH), The United States of America as represented by the Dept. of Health and Human Services (DHHS)
    Inventors: Jong Won Chung, Christopher J. Bettinger, Zhenan Bao, Do Hwan Kim, Bang Lin Lee, Jeong Il Park, Yong Wan Jin, Sang Yoon Lee