Oligomer Hydrate Crystallization Improves Carbon Nanotube Memory

Chido, Michael; Koronaios, Peter; Saravanan, Karthikeyan; Adams, Alexander P.; Geib, Steven J.; Zhu, Qiang; Sunkara, Hari B.; Velankar, Sachin; Enick, Robert M.; Keith, John A.; Star, Alexander

doi:10.1021/acs.chemmater.8b00964

Cited by 8 publications

(7 citation statements)

References 32 publications

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“…Adapted with permission from Zhang et al 61 Review through device design. In general, storage functions are implemented by designing a gate oxide 104 or a passivation layer 105 of CNTs to trap charges. Recently, Qu et al developed a flexible CNT nonvolatile memory transistor called sen-memory.…”

Section: Radiofrequency and Memory Devicesmentioning

confidence: 99%

Band Engineering of Carbon Nanotubes for Device Applications

Liu

Xie

Zhang

et al. 2020

Matter

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Carbon nanotubes (CNTs)-especially single-walled CNTs-are promising for device applications. Although CNTs have excellent intrinsic properties, their diverse band structures bring difficulties to improving the performances of CNT-based devices. Therefore, band engineering is necessary. For diverse electrical properties, selective enrichment of CNTs with specific electrical properties is essential for determining their corresponding application fields. For a certain band structure, methods such as doping can be used to slightly tune the energy bands of CNTs and make them more suitable for specific devices. Additionally, for some intrinsic limitations, construction of heterostructures with other functional materials is an effective way to tune the carrier transport at the interface and broaden the application range of CNTs. In this review, we discuss in detail the band engineering of CNTs and corresponding device applications from the respect of both microscopic and macroscopic devices. We present an outlook that controlled synthesis will determine the future applications and proper manufacture will improve the application qualities.

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Section: Radiofrequency and Memory Devicesmentioning

confidence: 99%

Band Engineering of Carbon Nanotubes for Device Applications

Liu

Xie

Zhang

et al. 2020

Matter

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“…POCB also exhibits several other unusual and fascinating properties including that pure POCB has an unusually low melting temperature compared to other polyxoyalkylenes, that the melting temperature of the hydrate exceeds that of both of the individual components, and that POCB separates from water upon the melting of the hydrate . These properties could lead to a variety of potential applications, such as improving the nonvolatile memory storage capabilities of carbon nanotube devices, drug delivery or other biomedical applications, , water purification, materials with high proton and ion conductivity for membrane applications, , and stimuli-responsive materials . To lay the foundation for such applications, this article moves beyond phase behavior and examines the kinetics of hydrate cocrystallization by dilatometry and by microscopic observations of spherulite growth.…”

Section: Introductionmentioning

confidence: 99%

Liquids that Freeze when Mixed: Homogeneous Cocrystallization Kinetics of Polyoxacyclobutane–Water Hydrate

Barker

Banerjee

Meyer

et al. 2021

ACS Appl. Polym. Mater.

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We report on the kinetics of crystallization of polyoxacyclobutane (POCB) and water to form a cocrystal hydrate, the first paper to explore the kinetics of crystallization of a polymer with a small molecule. POCB has unusual cocrystallization behavior when mixed with water, which could be exploited for a variety of applications including improving the nonvolatile memory storage capabilities of carbon nanotube devices, water purification, and biomedical applications such as drug delivery. The rates of hydrate crystallization of a series of mixtures containing up to 24 wt % water were measured using both a bulk, volumetric and a localized, spherulite growth approach. At these compositions, all mixtures were single-phase homogeneous liquids prior to hydrate crystallization, and all mixtures were POCB-rich as compared to the cocrystal stoichiometry. The time dependence of crystallization kinetics is well described by the Avrami equation. Reducing temperature, i.e., increasing undercooling, increases the Avrami exponents and increases spherulite growth velocities consistent with the Hoffmann–Lauritzen model. Reducing water content reduces spherulite growth velocities. The velocities also reduce with time during spherulite growth reminiscent of impurity effects in crystallization. Talc was found to accelerate nucleation. Broadly, the cocrystallization process starting from the homogeneous mixtures of the components resembles homopolymer crystallization, but with the complexity that when the mixture composition deviates from the cocrystal stoichiometry, the excess species cannot crystallize fully.

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“…The progress that has been made in nanotube purification has greatly broadened their applications over the past decade. A tangible demonstration of their potential is the growing number of studies on their use in several novel applications . For instance, Shulaker et al have fabricated the first functional CNT computer which was entirely built from CNT‐based transistors.…”

Section: Transistorsmentioning

confidence: 99%

Recent Advances in Applications of Sorted Single‐Walled Carbon Nanotubes

Bati

Batmunkh

et al. 2019

Adv Funct Materials

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Single-walled carbon nanotubes (SWCNTs) exhibit outstanding properties that make them appealing in a wide range of applications. However, their properties are variable depending on the tube helicity (chirality), which has been a challenge for a long time and needs to be effectively controlled. In recent years, tremendous efforts have been made to control the electrical type/chirality of nanotubes through both direct controlled synthesis and postsynthesis separation methods. Driven by these breakthroughs, the applications of separated families of SWCNTs in various fields have emerged as a new topic of research. In this Review, an overview of recent advances in the use of highly purified and well-separated SWCNTs in a comprehensive range of applications is presented including photovoltaics, transistors, batteries, sensors, light emitters, biological/medical fields, and others. Finally, important future directions for the utilization of separated SWCNTs in these fields are provided.

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Oligomer Hydrate Crystallization Improves Carbon Nanotube Memory

Cited by 8 publications

References 32 publications

Band Engineering of Carbon Nanotubes for Device Applications

Band Engineering of Carbon Nanotubes for Device Applications

Liquids that Freeze when Mixed: Homogeneous Cocrystallization Kinetics of Polyoxacyclobutane–Water Hydrate

Recent Advances in Applications of Sorted Single‐Walled Carbon Nanotubes

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