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Search Publications by: Ming Zheng (Fed)

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Displaying 26 - 50 of 99

Separation of Specific Single Enantiomer Single-Wall Carbon Nanotubes in the Large Diameter Regime

November 19, 2019
Author(s)
Jeffrey A. Fagan, Ming Zheng, Sofie Cambre, Wim Wenseleers, Benjamin Flavel, Han Li, Stephanie Reich, Georgy Gordeev, Oisin Garrity, Naga Peyyety, Ralph Krupke, Pranauv Selvasundaram
Enantiomer level isolation of single-wall carbon nanotubes (SWCNTs) in high concentration and purity for nanotubes greater than 1.1 nm in diameter is demonstrated for the first time using a twostage aqueous two-phase extraction (ATPE) technique. In total 5

Organizing End-Site-Specific SWCNTs in Specific Loci Using DNA

July 8, 2019
Author(s)
Ming Zheng
Single-wall carbon nanotubes (SWCNTs) are known to embody many desirable features for nanoelectronic and photonic applications, including excellent electronic and optical properties and mechanical robustness. To utilize these species in a bottom-up

Metrological Assessment of Single-Walled Carbon Nanotube Materials by Optical Methods

March 1, 2019
Author(s)
Jeffrey A. Fagan, Angela R. Hight Walker, Ming Zheng, Lefebvre Jacques, Paul Finnie
This chapter discusses the metrology – i.e. the science of measurement – of single-wall carbon nanotubes (SWCNTs) with optical methods. Professor Mildred (“Millie”) Dresselhaus was a strong advocate for nanotube metrology and a pioneer in carbon nanotube

Chemical Selection of Emission State Configuration in a Quantum Light Emitter

November 1, 2018
Author(s)
Ming Zheng, Geyou Ao, Stephen K. Doorn
Covalently-introduced photoluminescent sp3 defects generate new emitting states and dramatically expand optical functionality of single-wall carbon nanotubes, opening routes to enhanced imaging, photon upconversion, and room-temperature single photon

Alkane Encapsulation Induces Strain in Small Diameter Single-Wall Carbon Nanotubes

May 4, 2018
Author(s)
Jason K. Streit, Jochen I. Campo, Chad R. Snyder, Ming Zheng, Jeffrey R. Simpson, Angela R. Hight Walker, Jeffrey Fagan
Encapsulation of linear alkane molecules in the endohedral volumes of small diameter single- wall carbon nanotubes (SWCNTs) is shown to induce diameter dependent strain on the hexagonal lattice of carbon atoms composing the tubular structure. For the

Quantification of DNA/SWCNT Solvation Differences by Aqueous Two Phase Separation

January 8, 2018
Author(s)
Ming Zheng, Yoona Yang, Akshaya Shankar, Thibault Aryaksama, Anand Jagota
Single wall carbon nanotubes (SWCNTs) coated with single-stranded DNA can be effectively separated into various chiralities using an aqueous two phase (ATP) system. Partitioning is driven by small differences in the dissolution characteristics of the

Quantum Light Turned on by Nanotube Chemistry

September 1, 2017
Author(s)
Ming Zheng, Kartik A. Srinivasan
Room-temperature single-photon emission at telecom wavelengths is realized by organic color centers chemically implanted on chirality-defined single-wall carbon nanotubes.

A Low Energy Route to DNA-wrapped Carbon Nanotubes via Replacement of Bile Salts

August 31, 2017
Author(s)
Ming Zheng, Jason K. Streit, Jeffrey A. Fagan
DNA-wrapped carbon nanotubes are a class of bio-nano hybrid molecules that exhibit extended bonding structures and have enabled carbon nanotube sorting, controlled assembly, and biosensing and bioimaging applications. The current method of synthesizing

Separation of Double-Wall Carbon Nanotubes by Electronic Type and Diameter

January 24, 2017
Author(s)
Jason K. Streit, Stephanie Lam, Yanmei Piao, Angela R. Hight Walker, Jeffrey A. Fagan, Ming Zheng
In this work, we introduce a new procedure for the efficient isolation and subsequent separation of double-wall carbon nanotubes (DWCNTs). A simplified rate zonal ultracentrifugation (RZU) process is first applied to obtain samples of highly enriched

Sorting carbon nanotubes

January 12, 2017
Author(s)
Ming Zheng
Sorting of single-wall carbon nanotubes by their electronic and atomic structures in liquid phases is reviewed in this chapter. We first introduce the sorting problem, then provide an overview of several sorting methodologies, following roughly the