Current Imaging and Electromigration-Induced Splitting of GaN Nanowires As Revealed by Conductive Atomic Force Microscopy

Li, Chun; Bando, Yoshio; Golberg, Dmitri

doi:10.1021/nn100223j

Cited by 27 publications

(21 citation statements)

References 29 publications

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“…For example, conductive atomic force microscopy (CAFM) enables us to investigate the conductive properties of individual quantum structures [19-21], while scanning Kelvin microscopy (SKM) [22] and scanning capacitance microscopy (SCM) [23] are valuable tools for measuring the surface potential and carrier density distributions of individual quantum structures. These techniques have already been performed to study the electrical properties of individual quantum dots [24-31], but the electrical property studies on individual QRs are still lacking.…”

Section: Introductionmentioning

confidence: 99%

Nanoscale electrical property studies of individual GeSi quantum rings by conductive scanning probe microscopy

Cui

Yang

2012

Nanoscale Res Lett

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The nanoscale electrical properties of individual self-assembled GeSi quantum rings (QRs) were studied by scanning probe microscopy-based techniques. The surface potential distributions of individual GeSi QRs are obtained by scanning Kelvin microscopy (SKM). Ring-shaped work function distributions are observed, presenting that the QRs' rim has a larger work function than the QRs' central hole. By combining the SKM results with those obtained by conductive atomic force microscopy and scanning capacitance microscopy, the correlations between the surface potential, conductance, and carrier density distributions are revealed, and a possible interpretation for the QRs' conductance distributions is suggested.

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Section: Introductionmentioning

confidence: 99%

Nanoscale electrical property studies of individual GeSi quantum rings by conductive scanning probe microscopy

Cui

Yang

2012

Nanoscale Res Lett

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“…In the literature, Liu et al . investigated the char residue of wood plastics composites . The presence of Cu 2+ can catalyze the dehydrogenation carbonization reaction of wood powder.…”

Section: Resultsmentioning

confidence: 99%

The enhancement performances of cotton stalk fiber/PVC composites by sequential two steps modification

Wang

et al. 2017

J of Applied Polymer Sci

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In the present study, the cotton stalk fiber (CSF) was modified by sequential two steps of alkali and copper ethanolamine (CE) solution treatment. The unmodified and modified CSF/poly(vinyl chloride) (CSF/PVC) composites were prepared. The mechanical and physical performances of the various CSF/PVC composites were studied comparatively. By the modification of CE solution, all the tensile strength, tensile modulus, impact strength, water resistance, and heat distortion temperature of samples were enhanced continuously. The sample with comprehensive properties was obtained using 2% concentration of CE. The composites were also prepared with different CSF content. By increasing the CSF loading, all the tensile strength, elongation at breakage, tensile modulus, and heat distortion temperature of samples were enhanced. The existence of copper on the surface of CSF improved the thermal stability of the CSF/PVC composites. Water retention value, oil retention value, and scanning electron microscope were applied to reveal the components and microscopic change of the composites. The possible reaction mechanism of modification was proposed based on the experimental results and according to the previous literature. This method reported here may provide a new way for the fabrication of CSF/PVC composite in engineering applications.

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“…Additionally, ITO, together with its substitutes, fluorine-doped tin oxide (FTO) and aluminum zinc oxide (AZO) are brittle and thus unsuitable for future applications in flexible and stretchable electronic devices [100]. Metallic electrodes have been reported to exhibit a high atomic mobility and some of them also have a low chemical stability, which may result in destruction of the molecular junction upon oxidation or electromigration [101][102][103][104][105][106]. In addition, for certain fields of applications such as molecular optoelectronics, metallic electrodes may quench the excited states of the molecules and metal electrodes may limit optical access to the organic materials [107], generate light-induced plasmonic effects [108] or significant electrode expansion under visible light [109] masking the molecular optoelectronic properties.…”

Section: Self-assembled Monolayers Onto Semiconductors or Non-metallimentioning

confidence: 99%

Nanofabrication techniques of highly organized monolayers sandwiched between two electrodes for molecular electronics

2014

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Molecular electronics [1,2] is a promising field of research based on the idea that a single molecule or two dimensional assemblies of molecules (monomolecular films) can work as wires, switches, rectifiers, etc. Molecules are the smallest functional units and therefore it is expected that the use of molecules will permit to catch up with the limits of miniaturization (MM: more Moore), with an increase in device density by a factor of several orders of magnitude compared to today's state of the art. At the same time due to quantum effects novel and remarkable properties of organic and organometallic compounds at the nanoscale devices will result in increased performance (MtM: more than Moore) together with the appearance of new functions not possible with conventional semiconductors, and also cheaper devices due to the non-dependence of expensive materials used today in CMOS (complementary metal-oxide semiconductor) technology such as hafnium oxide. Nowadays, the number of research groups from different disciplines of science contributing to molecular electronics is gradually growing, and this field is becoming of great scientific and technological interest [1,3-8]. Since the seminal work of Aviram and Ratner in 1974 who firstly suggested that a single molecule could function as a rectifier [9], molecules have been experimentally demonstrated to work as switches, molecular wires or rectifiers, and a new field of opportunities is opened due to the understanding of electron transport through single entities or assemblies of molecules and expansion towards work on molecular spintronics, vibronic effects, excitation of the molecular junction with polarized light, quantum interference and decoherence, molecular chirality, molecular stretching and distortion as well as work on thermoelectric response in molecular junctions.Abstract: It is expected that molecular electronics, i.e., the use of molecules as critical functional elements in electronic devices, will lead in the near future to an industrial exploitable novel technology, which will open new routes to high value-added electronic products. However, despite the enormous advances in this field several scientific and technological challenges should be surmounted before molecular electronics can be implemented in the market. Among these challenges are the fabrication of reliable, robust and uniform contacts between molecules and electrodes, the deposition of the second (top) contact electrode, and development of assembly strategies for precise placement of molecular materials within device structures. This review covers advances in nanofabrication techniques used for the assembly of monomolecular films onto conducting or semiconducting substrates as well as recent methods developed for the deposition of the top contact electrode highlighting the advantages and limitations of the several approaches used in the literature. This contribution also aims to define areas of outstanding challenges in the nanofabrication of monomolecular layers sandwiched between two electro...

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Current Imaging and Electromigration-Induced Splitting of GaN Nanowires As Revealed by Conductive Atomic Force Microscopy

Cited by 27 publications

References 29 publications

Nanoscale electrical property studies of individual GeSi quantum rings by conductive scanning probe microscopy

Nanoscale electrical property studies of individual GeSi quantum rings by conductive scanning probe microscopy

The enhancement performances of cotton stalk fiber/PVC composites by sequential two steps modification

Nanofabrication techniques of highly organized monolayers sandwiched between two electrodes for molecular electronics

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