NanoIntegris

NanoIntegris Technologies, Inc.
Private
Industry Nanotechnology
Founded January 2007
Headquarters Boisbriand, Quebec
Website www.nanointegris.com

NanoIntegris is a nanotechnology company based in Boisbriand, Quebec specializing in the production of enriched, single-walled carbon nanotubes.[1] In 2012, NanoIntegris was acquired by Raymor Industries, a large-scale producer of single-wall carbon nanotubes using the plasma torch process.

The proprietary technology through which NanoIntegris creates their products spun out of the Hersam Research Group[2] at Northwestern University.[3]

Process

The process through which these technologies emerged is called Density Gradient Ultracentrifugation (DGU). DGU has been used for some time in biological and medical applications[4] but Dr. Mark Hersam utilized this process with carbon nanotubes which allowed for those nanotubes with semi-conductive properties to be separated from those with conductive properties. While the DGU method was the first one to convincingly produce high-purity semiconducting carbon nanotubes, the rotation speeds involved limit the amount of liquid, and thus nanotubes, that can be processed with this technology. NanoIntegris has recently licensed a new process using selective wrapping of semiconducting nanotubes with conjugated polymers.[5] This method is scalable thus enables the supply of this material in large quantities for commercial applications.

Products

Semiconducting SWCNT

Enriched Semiconducting carbon nanotubes (sc-SWCNT) using either a density-gradient ultracentrifugation (DGU) or a polymer-wrapping (conjugated polymer extraction(CPE)) method. While the DGU method is used to disperse and enrich sc-SWCNT in an aqueous solution, the CPE method disperses and enriches sc-SWCNT in non-polar aromatic solvents[6]

Conducting SWCNT

Enriched Conducting carbon nanotubes[7]

PlasmaTubes SWCNT

Highly graphitized single-wall carbon nanotubes grown using an industrial scale plasma torch. Nanotubes grown using a plasma torch display diameters, lengths and purity levels comparable to the arc and laser method. The nanotubes measure between 1 and 1.5 nm in diameter and between 0.3-5 microns in length.[8]

Pure and SuperPureTubes SWCNT

Highly purified carbon nanotubes. Carbon impurities and metal catalysts impurities below 3% and 1.5% respectively.[9]

PureSheets/Graphene

1-4+ layer graphene sheets obtained by liquid exfoliation of graphite[10]

HiPco SWCNT

Small-diameter single-walled carbon nanotubes[11]

Applications

Field-Effect Transistors

Both Wang[12] and Engel[13] have found that NanoIntegris separated nanotubes "hold great potential for thin-film transistors and display applications" compared to standard carbon nanotubes. More recently, nanotube-based thin film transistors have been printed using inkjet or gravure methods on a variety of flexible substrates including polyimide [14] and polyethylene (PET) [15] and transparent substrates such as glass.[16] These p-type thin film transistors reliably exhibit high-mobilities (> 10 cm^2/V/s) and ON/OFF ratios (> 10^3) and threshold voltages below 5 V. Nanotube-enabled thin-film transistors thus offer high mobility and current density, low power consumption as well as environmental stability and especially mechanical flexibility. Hysterisis in the current-voltage curves as well as variability in the threshold voltage are issues that remain to be solved on the way to nanotube-enabled OTFT backplanes for flexible displays.

Transparent Conductors

Additionally, the ability to distinguish semiconducting from conducting nanotubes was found to have an effect on conductive films.[17]

Organic Light-Emitting Diodes

Organic Light-Emitting Diodes (OLEDs) can be made on a larger scale and at a lower cost using separated carbon nanotubes.[12]

High Frequency Devices

By using high-purity, semiconducting nanotubes, scientists have been able to achieve "record...operating frequencies above 80 GHz."[18]

Researchers Who Have Published Using NanoIntegris Materials

Chongwu Zhou[19]

Mark Hersam[17]

Bruce Weisman[20]

Craig E. Banks[21]

Fwu-Shan Sheu[22]

Peter John Burke[23]

Saiful I. Khondaker[24]

Martin Pumera[25]

Achim Hartschuh[26]

Lu-Chang Qin[27]

Phaedon Avouris,[28][29]

Ralph Krupke[29]

Jong-Hyun Ahn[30]

Partha Hazra[31]

Lain-Jong Li[32]

Menachem Elimelech[33]

Chad D. Vecitis[33]

Jonas I. Goldsmith[34]

Samuel Graham[35]

Robert C. Haddon[36]

References

  1. ↑ NanoIntegris Official Site
  2. ↑ Hersam Research Group
  3. ↑ Nanotechnology Now October 28th, 2008
  4. ↑ Application of Density Gradient Ultracentrifugation Using Zonal Rotors in the Large-Scale Purification of Biomolecules, Downstream Processing of Proteins, Volume 9: 6, Jan. 2000
  5. ↑ J. Ding et al. (2014) Enrichment of large-diameter semiconducting SWCNTs by polyfluorene extraction for high network density thin film transistors. Nanoscale,6, 2328-2339
  6. ↑ Semiconducting Nanotubes
  7. ↑ Conducting Nanotubes
  8. ↑
  9. ↑ Purified Nanotubes
  10. ↑ PureSheets Graphene
  11. ↑ HiPco Nanotubes
  12. 1 2 Wang, C. et al. (2009) Wafer-Scale Fabrication of Separated Carbon Nanotube Thin-Film Transistors for Display Applications. Nano Lett., 2009, 9 (12), pp 4285–4291
  13. ↑ Engel, M. et al. (2008) Thin Film Nanotube Transistors Based on Self-Assembled, Aligned, Semiconducting Carbon Nanotube Arrays. ACS Nano, 2008, 2 (12), pp 2445–2452
  14. ↑ C. Wang et al. (2012) Extremely Bendable, High-Performance Integrated Circuits Using Semiconducting Carbon Nanotube Networks for Digital, Analog, and Radio-Frequency Applications. Nano Lett. 12, 1527−1533
  15. ↑ P. Heng Lau et al.(2013) Fully Printed, High Performance Carbon Nanotube Thin-Film Transistors on Flexible Substrates. Nano Lett. 13, 3864−3869
  16. ↑ F. Sajed and C. Rutherglen (2013) All-printed and transparent single walled carbon nanotube thin film transistor devices. Applied Physics Letters 103, 143303 (2013)
  17. 1 2 Green, A. and Hersam, M. (2008) Colored Semitransparent Conductive Coatings Consisting of Monodisperse Metallic Single-Walled Carbon Nanotubes. Nano Lett., 2008, 8 (5), pp 1417–1422
  18. ↑ 80 GHz Field-Effect Transistors Produced Using High Purity Semiconducting Single-Walled Carbon Nanotubes
  19. ↑ Air-Stable Conversion of Separated Carbon Nanotube Thin-Film Transistors from p-Type to n-Type Using Atomic Layer Deposition of High-κ Oxide and Its Application in CMOS Logic Circuits
  20. ↑ Analyzing Absorption Backgrounds in Single-Walled Carbon Nanotube Spectra
  21. ↑ Graphene Electrochemistry: Surfactants Inherent to Graphene Can Dramatically Effect Electrochemical Processes
  22. ↑ Advances in Carbon Nanotube Based Electrochemical Sensors for Bioanalytical Applications
  23. ↑ Fundamental Limits on the Mobility of Nanotube-Based Semiconducting Inks
  24. ↑ Evaluating Defects in Solution-Processed Carbon Nanotube Devices via Low-Temperature Transport Spectroscopy
  25. ↑ The Electrochemical Response of Graphene Sheets is Independent of the Number of Layers from a Single Graphene Sheet to Multilayer Stacked Graphene Platelets
  26. ↑ Tip-Enhanced Raman Spectroscopic Imaging of Localized Defects in Carbon Nanotubes
  27. ↑ Effects of Surfactants on Spinning Carbon Nanotube Fibers by an Electrophoretic Method
  28. ↑ The Polarized Carbon Nanotube Thin Film LED
  29. 1 2 IBM Group
  30. ↑ Flexible, Transparent Single-Walled Carbon Nanotube Transistors with Graphene Electrodes
  31. ↑ Solvation Dynamics of Coumarin 153 in SDS Dispersed Single Walled Carbon Nanotubes (SWNTs)
  32. ↑ Ultrasensitive Detection of DNA Molecules with High On/Off Single-Walled Carbon Nanotube Network
  33. 1 2 Electronic-Structure-Dependent Bacterial Cytotoxicity of Single-Walled Carbon Nanotubes
  34. ↑ Electrochemical Analysis of Single-Walled Carbon Nanotubes Functionalized with Pyrene-Pendant Transition Metal Complexes
  35. ↑ Evaluation of Transparent Carbon Nanotube Networks of Homogeneous Electronic Type
  36. ↑ Enhanced Electromodulation of Infrared Transmittance in Semitransparent Films of Large Diameter Semiconducting Single-Walled Carbon Nanotubes
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.