Nanoelectronic Devices Based on Carbon Nanotubes

Dmitriev, Victor; Gomes, Fernando Antonio Pinheiro; Nascimento, Clerisson

doi:10.5028/jatm.v7i1.358

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…CNTs are well-ordered, highaspect-ratio hollow graphite rods that were identified by Iijima in 1991 [33]. Since then, CNTs have been widely used in many areas, including electrode materials [34], nanoelectronics components [35], biosensors [36], strengthening of materials [37], and as components of biomaterials for drug delivery or other types of therapy [38][39][40][41]. The synthesis of CNTs is a broad topic and will not be described here in detail; however, it should be noted that the most used methods are electric-arc discharge [42], laser ablation [43], and the wide family of catalytic chemical vapor deposition (CCVD) methods [44].…”

Section: Properties Modifications and Application Of Cntsmentioning

confidence: 99%

3D Cell Spheroids as a Tool for Evaluating the Effectiveness of Carbon Nanotubes as a Drug Delivery and Photothermal Therapy Agents

Anisimov

Gorin

Abalymov

2022

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Cell spheroids (CSs) are three-dimensional models in vitro that have a microenvironment similar to tissues. Such three-dimensional cellular structures are of great interest in the field of nano biomedical research, as they can simulate information about the characteristics of nanoparticles (NPs) by avoiding the use of laboratory animals. Due to the development of areas such as bioethics and tissue engineering, it is expected that the use of such 3D cell structures will become an even more valuable tool in the hands of researchers. We present an overview of carbon nanotubes (CNTs) research on CSs in order to determine the mechanism of their incorporation into CSs, drug delivery, and photothermal therapy. We will look at such areas as the application of CNTs for medical purposes, the advantages of spheroids over classical 2D cell culture, the ways in which CNTs pass into the intercellular space, and the ways in which they are absorbed by cells in a three-dimensional environment, the use of the spheroid model for such studies as drug delivery and photothermal therapy. Thus, CSs are suitable models for obtaining additional information on the required properties of CNTs in their application in nanobiomedicine.

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Section: Properties Modifications and Application Of Cntsmentioning

confidence: 99%

3D Cell Spheroids as a Tool for Evaluating the Effectiveness of Carbon Nanotubes as a Drug Delivery and Photothermal Therapy Agents

Anisimov

Gorin

Abalymov

2022

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“…Therefore, they are highly suitable for a number of applications, such as nano-optics, nanoelectronics, optoelectronics, and photovoltaics. [29][30][31] In particular, it was shown that CNTs could be used as interconnection elements, nanotransistors, detectors, light-emitting diodes, and transparent or opaque electrodes of solar cells. [32][33][34][35] In comparison to bulk materials, NTs show plasmon resonances associated with a slow surface wave propagating along their axis, which can be effectively controlled by the length of the structure.…”

Section: Introductionmentioning

confidence: 99%

A Review of the Terahertz Conductivity and Photoconductivity of Carbon Nanotubes and Heteronanotubes

Burdanova

Tsapenko

Kharlamova

et al. 2021

Advanced Optical Materials

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particular, at that stage, it was realized that single-walled carbon nanotubes (SWCNTs) shown in Figure 1a have a unique property that makes them different from other NTs: they are semiconducting or metallic depending on their chirality in comparison to graphene, a Dirac semimetal. This makes SWCNTs promising for both electronic and optoelectronic applications. [11] In the years following the work of Iijima, numerous different classes of 1D materials were reported. In 1992 and 1995, the discovery of WS 2 and MoS 2 NTs were reported. [4,6] In 1999, initial reports showed the feasibility of growing highly aligned arrays of TiO 2 NTs. [12] A number of groups reported progress in the synthesis of BN NTs. [5] The main difference between non-organic NTs (for example, MoS 2 , MoSe 2 , WS 2 , WSe 2 , etc.) and CNTs is that non-organic NTs are mostly semiconducting. Their mobility and transport properties have been widely investigated. [13][14][15] The family of 1D materials has grown appreciably. Each new NT demonstrated unique properties associated with their small dimensionality, thus being different from their 2D and 3D counterparts. In the same way as proposed for 2D materials, [16] NTs can be grown outside or inside of each other, like a Russian doll, forming 1D van der Waals (vdW) heterostructure (or so-called heteronanotube) (Figure 1d). In most of them, CNTs are used as a template for growth. For example, the first composite of CNTs wrapped by MoS 2 NTs (here and later in the text-C@ MoS 2 NT) was synthesized in 2006. [17] Later on, the charge transport properties were investigated in ref. [18]. Recently the optical, electrical and transport properties of atomically thin Terahertz (THz) spectroscopy is an ideal non-contact and non-destructive technique that probes the electrical conductivity of nanomaterials. This review presents the current status of research in the THz properties of quasi-1D materials, such as nanotubes (NTs) and NT heterostructures. Detailed descriptions of THz experimental methods (THz time-domain spectroscopy, optical pump-THz probe spectroscopy) and conductivity extraction methods are presented along with the physical models (Drude, plasmon, effective medium theories, etc.) supporting them. Optoelectronic applications, such as optical modulators, switches, and shielding devices, are discussed and illustrate a bright future for these materials.

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“…Apart from semiconductor devices, other nanoscale devices such as optoelectronics, electromechanical actuators/sensors, thermoelectric materials also face similar heat generation challenges, for example, nanotube-based electronics, , nanowire array-based lasers, , super lattice-based thin-film thermoelectric materials, , and nanowires. , The lack of thermal metrology at the nanoscale is a major impediment for scientific and economic developments.…”

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confidence: 99%

Micromachined Chip Scale Thermal Sensor for Thermal Imaging

Shekhawat

Ramachandran²,

Sharahi

et al. 2018

ACS Nano

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The lateral resolution of scanning thermal microscopy (SThM) has hitherto never approached that of mainstream atomic force microscopy, mainly due to poor performance of the thermal sensor. Herein, we report a nanomechanical system-based thermal sensor (thermocouple) that enables high lateral resolution that is often required in nanoscale thermal characterization in a wide range of applications. This thermocouple-based probe technology delivers excellent lateral resolution (∼20 nm), extended high-temperature measurements >700 °C without cantilever bending, and thermal sensitivity (∼0.04 °C). The origin of significantly improved figures-of-merit lies in the probe design that consists of a hollow silicon tip integrated with a vertically oriented thermocouple sensor at the apex (low thermal mass) which interacts with the sample through a metallic nanowire (50 nm diameter), thereby achieving high lateral resolution. The efficacy of this approach to SThM is demonstrated by imaging embedded metallic nanostructures in silica core-shell, metal nanostructures coated with polymer films, and metal-polymer interconnect structures. The nanoscale pitch and extremely small thermal mass of the probe promise significant improvements over existing methods and wide range of applications in several fields including semiconductor industry, biomedical imaging, and data storage.

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Nanoelectronic Devices Based on Carbon Nanotubes

Cited by 6 publications

References 17 publications

3D Cell Spheroids as a Tool for Evaluating the Effectiveness of Carbon Nanotubes as a Drug Delivery and Photothermal Therapy Agents

3D Cell Spheroids as a Tool for Evaluating the Effectiveness of Carbon Nanotubes as a Drug Delivery and Photothermal Therapy Agents

A Review of the Terahertz Conductivity and Photoconductivity of Carbon Nanotubes and Heteronanotubes

Micromachined Chip Scale Thermal Sensor for Thermal Imaging

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