Young’s modulus of crystalline C60 nanotubes studied by in situ transmission electron microscopy

Kizuka, Tokushi; Saito, Kazuma; Miyazawa, Kun’ichi

doi:10.1016/j.diamond.2008.02.038

Cited by 19 publications

(17 citation statements)

References 27 publications

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“…According to Miyazawa et al, this difference can be attributed to the polymerization of the molecules [14]. Thus, it is deduced that the increase in Young's modulus observed in this study originates from the effect of the polymerization of the constituent C 70 molecules, as previously discussed for the bending tests of C 60 NTs [18]. [21,22].…”

Section: Young's Modulus Of C 70 Nts and Filmsmentioning

confidence: 50%

“…The crystal structure of the NT was tetragonal. This crystal structure has been observed in dried C 70 NWs, C 60 NWs, and NTs synthesized by LLIP methods [18][19][20]. Polymerized C 70 crystals under hydrostatic compression have an orthorhombic structure with similar lattice constants a and c, which is comparable to the tetragonal structure [27].…”

Section: Journal Of Nanotechnologymentioning

confidence: 51%

“…From this minimum diameter, the maximum Young's modulus of C 70 NTs is estimated to be 92-105 GPa. Kizuka et al reported that Young's modulus of a C 60 NT with an outer diameter of 510 nm is 84.5 GPa [18]. From the linear approximation in Figure 5, Young's modulus of a C 70 NT with the same outer diameter, that is, 510 nm, is calculated to be 56 GPa.…”

Section: Resultsmentioning

confidence: 99%

“…The mechanical properties of NWs and NTs have been investigated for application to structural materials and functional devices. Buckling tests of C 60 NWs and NTs have been performed by in situ transmission electron microscopy (TEM), and their Young's moduli were estimated to be 53-69 GPa and 62-107 GPa, respectively [17][18][19]. Fullerene NWs and NTs can be synthesized using another well-known fullerene molecule, that is, C 70 [15,20].…”

Section: Introductionmentioning

confidence: 99%

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Young's Modulus of Single-Crystal Fullerene Nanotubes

Kizuka

Miyazawa

Tokumine

2012

Journal of Nanotechnology

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We performed bending tests on single-crystal nanotubes composed of fullerene C 70 molecules by in situ transmission electron microscopy with measurements of loading forces by an optical deflection method. The nanotubes with the outer diameters of 270-470 nm were bent using simple-beam and cantilever-beam loading by the piezomanipulation of silicon nanotips. Young's modulus of the nanotubes increased from 61 GPa to 110 GPa as the outer diameter decreased from 470 nm to 270 nm. Young's modulus was estimated to be 66% of that of single-crystal C 60 nanotubes of the same outer diameter.

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Section: Young's Modulus Of C 70 Nts and Filmsmentioning

confidence: 50%

Section: Journal Of Nanotechnologymentioning

confidence: 51%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Young's Modulus of Single-Crystal Fullerene Nanotubes

Kizuka

Miyazawa

Tokumine

2012

Journal of Nanotechnology

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“…Because this structural feature is suitable for application in advanced nanodevices, the mechanical properties of these NWs and NTs have been the focus of a considerable amount of research. In situ transmission electron microscopy (TEM) equipped with piezomanipulation of individual NWs and NTs enables investigating the mechanical properties of such nanometersized materials [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Solvation-Assisted Young’s Modulus Control of Single-Crystal Fullerene Nanowhiskers

Kizuka

Miyazawa²,

Tokumine³

2012

Journal of Nanotechnology

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Single-crystal nanowhiskers (NWs) composed of fullerene C70molecules were synthesized by the liquid-liquid interfacial precipitation method that usedm-xylene as a saturated solution of C70molecules. Bending behavior of the individual NWs was observed byin situtransmission electron microscopy equipped with nanonewton force measurements using an optical deflection method. The Young’s modulus of the NWs was estimated to be 0.3–1.9 GPa, which was 2–7% of the moduli of fullerene NWs with similar diameters synthesized using other solvents, that is, toluene and pyridine. The influence of the solvent used in the precipitation method on Young’s modulus is discussed.

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Bipolar Light‐Addressable Potentiometric Sensor Based on Fullerene Photosensitive Layer

Jiao

Zhang

et al. 2021

Adv Materials Technologies

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Light‐addressable potentiometric sensor (LAPS) is highly attractive in many sectors, including human disease detection, drug screening, and environmental monitoring. Currently, classical LAPS chips adopt inorganic semiconductors, such as silicon, as the photosensitive layer. Organic semiconductors can provide the next generation of the photosensitive layer because of their high absorption efficiency, large structural variability, eco‐friendliness, and bendability. However, no promising organic materials have been reported so far for the construction of LAPS chips. Here, the authors demonstrate the potential of fullerene (C60), a π‐conjugated carbon molecule with high n‐type conduction, as a candidate material for the photosensitive layer of LAPS. They report on a peculiar bipolar photo‐response under both reverse and forward biased conditions for C60‐based LAPS. An oxygen‐trap‐induced space‐charge mechanism is proposed to explain the unique bipolar photo‐response phenomenon. The proposed C60‐based LAPS exhibits an excellent pH sensitivity of 150 mV/pH as well as a high spatial resolution of 3.8 µm. The authors anticipate that these results will spark interest in this field and enable the replacement of the inorganic‐semiconductor photosensitive layer by organic semiconductor materials for the construction of high‐performance LAPS.

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Young’s modulus of crystalline C60 nanotubes studied by in situ transmission electron microscopy

Cited by 19 publications

References 27 publications

Young's Modulus of Single-Crystal Fullerene Nanotubes

Young's Modulus of Single-Crystal Fullerene Nanotubes

Solvation-Assisted Young’s Modulus Control of Single-Crystal Fullerene Nanowhiskers

Bipolar Light‐Addressable Potentiometric Sensor Based on Fullerene Photosensitive Layer

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