A polarized infrared thermal detector made from super-aligned multiwalled carbon nanotube films

Lin, Xiuping; Zhang, Yuying; Wang, Yang; Li, Kai; Wang, Zheng; Li, Tianyi; Jiang, Zhe; Shi, Junpeng; Liu, Liang; Li, Qunqing; Zhao, Yonggang; Feng, Zhenghe; Fan, Shanhui; Jiang, Kaili

doi:10.1088/0957-4484/22/2/025502

Cited by 43 publications

(49 citation statements)

References 34 publications

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“…A polarization-sensitive IR bolometer made from highly aligned MWCNT films was reported by Jiang et al [90] This aligned MWCNT film with a thickness of a few nm was made by mechanically drawing MWCNTs from a vertically-aligned MWCNT array, as shown in Recently, Lu and coworkers developed a plasmonic-enhanced MWCNT infrared bolometer. [89] In this work, MWCNTs bundles were grown horizontally and suspended across small gaps of ~100 nm formed by silver nanoantenna arrays on a SiO 2 /Si substrate.…”

Section: Bolometers Based On Mwcnt Bundles or Filmsmentioning

confidence: 99%

Uncooled Carbon Nanotube Photodetectors

Léonard

Kono

2015

Advanced Optical Materials

155

166

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Photodetectors play key roles in many applications such as remote sensing, night vision, reconnaissance, medical imaging, thermal imaging, and chemical detection. Several properties such as performance, reliability, ease of integration, cost, weight, and form factor are all important in determining the attributes of photodetectors for particular applications. While a number of materials have been used over the past several decades to address photodetection needs across the electromagnetic spectrum, the advent of nanomaterials opens new possibilities for photodetectors. In particular, carbon-based nanomaterials such as carbon nanotubes (CNTs) and graphene possess unique properties that have recently been explored for photodetectors. Here, we review the status of the field, presenting a broad coverage of the different types of photodetectors that have been realized with CNTs, placing particular emphasis on the types of mechanisms that govern their operation. We present a comparative summary of the main performance metrics for such detectors, and an outlook for performance improvements.2

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Section: Bolometers Based On Mwcnt Bundles or Filmsmentioning

confidence: 99%

Uncooled Carbon Nanotube Photodetectors

Léonard

Kono

2015

Advanced Optical Materials

155

166

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“…Some studies used clonogenic assays and multiple doses to construct a survival curve, 41,[53][54][55][56] while others conducted viable cell counting, metabolic assays (enzymatic reduction of tetrazolium dye including MTT, MTS or WST-1) and resazurin sodium salt reduction (Alamar blue test) at a single radiation dose. [57][58][59] Thus, it is difficult to compare our results for radiosensitivity with those of other studies because different cell lines, AuNPs, radiation energy, radiation dosage, evaluation methods and measurement time of cell viability after IR were used. In our study, the viability of MDA-MB-231 cells treated with RGD/P-AuNPs and 4 Gy IR decreased by ~17% according to cell counting assay results and decreased by ~16% based on CCK-8 metabolic assays compared to IR alone.…”

mentioning

confidence: 99%

Targeting integrins with RGD-conjugated gold nanoparticles in radiotherapy decreases the invasive activity of breast cancer cells

Wu¹,

Onodera²,

Ichikawa³

et al. 2017

IJN

106

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Gold nanoparticles (AuNPs) have recently attracted attention as clinical agents for enhancing the effect of radiotherapy in various cancers. Although radiotherapy is a standard treatment for cancers, invasive recurrence and metastasis are significant clinical problems. Several studies have suggested that radiation promotes the invasion of cancer cells by activating molecular mechanisms involving integrin and fibronectin (FN). In this study, polyethylene-glycolylated AuNPs (P-AuNPs) were conjugated with Arg–Gly–Asp (RGD) peptides (RGD/P-AuNPs) to target cancer cells expressing RGD-binding integrins such as α5- and αv-integrins. RGD/P-AuNPs were internalized more efficiently and colocalized with integrins in the late endosomes and lysosomes of MDA-MB-231 cells. A combination of RGD/P-AuNPs and radiation reduced cancer cell viability and increased DNA damage compared to radiation alone in MDA-MB-231 cells. Moreover, the invasive activity of breast cancer cell lines after radiation treatment was significantly inhibited in the presence of RGD/P-AuNPs. Microarray analyses revealed that the expression of FN in irradiated cells was suppressed by combined use of RGD/P-AuNPs. Reduction of FN and downstream signaling may be involved in suppressing radiation-induced invasive activity by RGD/P-AuNPs. Our study suggests that RGD/P-AuNPs can target integrin-overexpressing cancer cells to improve radiation therapy by suppressing invasive activity in addition to sensitization. Thus, these findings provide a possible clinical strategy for using AuNPs to treat invasive breast cancer following radiotherapy.

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“…Till now, researchers have developed a variety of NW/NT assembly methods on various substrates, which can generally be categorized as two strategies [1][2][3][4][5][6][7][8][9]: (1) Alignment-after-Growth, which means, the NWs are assembled on substrates after synthesis; (2) Alignment-during-growth, which means, the NWs are assembled and aligned directly during the synthesis process. For example, by pre-defining the locations of catalyst and growth space of the NWs [10][11][12][13], applying electric field in the seeded growth system [14][15], applying directional air flow in the growth system [16][17], or directly on a surface based on physical atomic structures [18][19][20][21][22][23][24][25][26][27][28], by electrospinning [29][30][31], or superaligning [32][33], NWs can be aligned as grown simultaneously. However, these approaches are limited to a few types of materials and relatively simple structures, and the uniformity of the grown NWs is hard to control.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Directed Assembly of Nanowires or Nanotubes

Liu

Lau

et al. 2012

Nano-Micro Lett.

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Nanowires and nanotubes of diverse material compositions, properties and/or functions have been produced or fabricated through various bottom-up or top-down approaches. These nanowires or nanotubes have also been utilized as potential building blocks for functional nanodevices. The key for the integration of those nanowire or nanotube based devices is to assemble these one dimensional nanomaterials to specific locations using techniques that are highly controllable and scalable. Ideally such techniques should enable assembly of highly uniform nanowire/nanotube arrays with precise control of density, location, dimension or even material type of nanowire/nanotube. Numerous assembly techniques are being developed that can quickly align and assemble large quantities of one type or multiple types of nanowires through parallel processes, including flow-assisted alignment, Langmuir-Blodgett assembly, bubble-blown technique, electric/magnetic-field directed assembly, contact/roll printing, knocking-down, etc.. With these assembling techniques, applications of nanowire/nanotube based devices such as flexible electronics and sensors have been demonstrated. This paper delivers an overall review of directed nanowire assembling approaches and analyzes advantages and limitations of each method. The future research directions have also been discussed.

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A polarized infrared thermal detector made from super-aligned multiwalled carbon nanotube films

Cited by 43 publications

References 34 publications

Uncooled Carbon Nanotube Photodetectors

Uncooled Carbon Nanotube Photodetectors

Targeting integrins with RGD-conjugated gold nanoparticles in radiotherapy decreases the invasive activity of breast cancer cells

Recent Advances in Directed Assembly of Nanowires or Nanotubes

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