Single electron transistor using a molecularly linked gold colloidal particle chain

Satô, Toshihiko; Ahmed, H.; Brown, David; Johnson, Brian F. G.

doi:10.1063/1.365600

Cited by 289 publications

(196 citation statements)

References 13 publications

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“…By tuning the gate voltage the number of electrons on the island can be adjusted. This was also demonstrated for one [4,5] or a few [6,7] individual nanocrystals. An overview about the foundations, prospects, and applications in the field of single-electron devices can be found in the review by Likharev [8].…”

Section: Introductionmentioning

confidence: 85%

Metal nanoparticle field-effect transistor

Cai

Michels

Bachmann

et al. 2013

Journal of Applied Physics

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We demonstrate that by means of a local top-gate current oscillations can be observed in extended, monolayered films assembled from monodisperse metal nanocrystals -realizing transistor function. The oscillations in this metal-based system are due to the occurrence of a Coulomb energy gap in the nanocrystals which is tunable via the nanocrystal size. The nanocrystal assembly by the Langmuir-Blodgett method yields homogeneous monolayered films over vast areas. The dielectric oxide layer protects the metal nanocrystal field-effect transistors from oxidation and leads to stable function for months. The transistor function can be reached due to the high monodispersity of the nanocrystals and the high super-crystallinity of the assembled films. Due to the fact that the film consists of only one monolayer of nanocrystals and all nanocrystals are simultaneously in the state of Coulomb blockade the energy levels can be influenced efficiently (limited screening).

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Section: Introductionmentioning

confidence: 85%

Metal nanoparticle field-effect transistor

Cai

Michels

Bachmann

et al. 2013

Journal of Applied Physics

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“…The nanostructures may use gold nanoparticles as single-electron transistors (22) and have many of the topological features of integrated electronics (7,23,24). They may be metallized (6,24) to create negative refractive index materials (25,26).…”

Section: Resultsmentioning

confidence: 99%

Defined DNA/nanoparticle conjugates

Ackerson

Sykes

Kornberg

2005

Proc. Natl. Acad. Sci. U.S.A.

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Glutathione monolayer-protected gold clusters were reacted by place exchange with 19-or 20-residue thiolated oligonucleotides. The resulting DNA͞nanoparticle conjugates could be separated on the basis of the number of bound oligonucleotides by gel electrophoresis and assembled with one another by DNA-DNA hybridization. This approach overcomes previous limitations of DNA͞ nanoparticle synthesis and yields conjugates that are precisely defined with respect to both gold and nucleic acid content.DNA-DNA hybridization ͉ monolayer-protected gold clusters ͉ nanostructure D NA-DNA hybridization has been exploited in the assembly of nanostructures (1-3), including nanomechanical (4, 5) and nanoelectronic (6) devices, molecular computation devices (7), biosensors, and DNA scaffolds (8). Many of these applications involve the use of DNA oligonucleotides tethered to gold nanoparticles. Additional oligonucleotides may be hybridized to these DNA͞nanoparticle conjugates, or nanoparticles may be hybridized with one another.Two types of DNA͞nanoparticle conjugates have been developed for these purposes. Both types entail the coupling of oligonucleotides through terminal thiol groups to colloidal gold particles. In one case, the oligonucleotides formed the entire monolayer coating the particles (3), whereas in the other case, the oligonucleotides were incorporated in a phosphine monolayer, and particles containing discrete numbers of oligonucleotides were separated by gel electrophoresis (2, 9). A minimal length of Ϸ50 residues was required, both for separation by electrophoresis and hybridization with complementary DNA sequences. These limitations of shorter oligonucleotides were attributed to interaction between the DNA and the gold surface (10, 11), with the DNA ''intrinsically bent'' (10) and wrapped around a colloidal particle (11), and with greatest affinity for C and G residues and least for A and T residues (12). Materials and MethodsOligonucleotides, synthesized by MWG Biotech, High Point, NC (www.mwgbiotech.com), were as follows: 20 residues, 5ЈSH-ACAACTTTCAACAGTCTAAC-3Ј; 19 residues, 5Ј-AGGC-CGCACCTAGGACGGT-3ЈSH; and 39 residues, complementary to 19 and 20 residues, TGTTGAAAGTTGTCAGATT-GTCCGGCGTGGATCCTGCCA. Glutathione monolayerprotected clusters (MPCs) were synthesized as described (13). Band 3, with a core of average mass 9 kDa, corresponding to 46 gold atoms, and diameter of 1.2 nm, was used. Oligonucleotides (10 l of 500 M) were reduced by treatment with 1 l of 50 mM Tris(2-caroxyethyl)phosphine (Sigma 646547) for 30 min at room temperature. Glutathione MPC (10 l of 1 mM) was added, followed by incubation for 1 h at 50°C.All gels were 15T͞5C acrylamide in TBE, run at a constant 100 V.A model of double-helical DNA with the sequence used here was generated with the use of NUCLEIC ACID BUILDER (14). The C6 5Ј-thiol and C3 3Ј-thiol linker regions were added to the models with PYMOL (15). Gold clusters were approximated as spheres. The DNA models were allowed to rotate about the axis of the thiol bond and attached to th...

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“…It is rather interesting to compare the molecular resistance deduced from this ultrafast voltammetry measurement with the steady-state resistance data, [75] obtained by applying a bias voltage across the molecular interface, reporting an R of 12.5 MΩ using 10 nm (thus a SAM area ∼ 4 times smaller) Au nanoparticle. We determine the nominal molecular resistance by obtaining the RC time constants from fitting V M (t) recorded at F=11 mJ/cm 2 , which is beneath the dielectric breakdown threshold.…”

Section: Charge Transport In Substrate-molecule-nanoparticle Intermentioning

confidence: 99%

Ultrafast Electron Diffractive Voltammetry: General Formalism and Applications

et al. 2011

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We present a general formalism of ultrafast diffractive voltammetry approach as a contact-free tool to investigate the ultrafast surface charge dynamics in nanostructured interfaces. As case studies, the photoinduced surface charging processes in oxidized silicon surface and the hot electron dynamics in nanoparticle-decorated interface are examined based on the diffractive voltammetry framework. We identify that the charge redistribution processes appear on the surface, sub-surface, and vacuum levels when driven by intense femtosecond laser pulses. To elucidate the voltammetry contribution from different sources, we perform controlled experiments using shadow imaging techniques and N-particle simulations to aid the investigation of the photovoltage dynamics in the presence of photoemission. We show that voltammetry contribution associated with photoemission has a long decay tail and plays a more visible role in the nanosecond timescale, whereas the ultrafast voltammetry are dominated by local charge transfer, such as surface charging and molecular charge transport at nanostructured interfaces. We also discuss the general applicability of the diffractive voltammetry as an integral part of quantitative ultrafast electron diffraction methodology in researching different types of interfaces having distinctive surface diffraction and boundary conditions.

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Single electron transistor using a molecularly linked gold colloidal particle chain

Cited by 289 publications

References 13 publications

Metal nanoparticle field-effect transistor

Metal nanoparticle field-effect transistor

Defined DNA/nanoparticle conjugates

Ultrafast Electron Diffractive Voltammetry: General Formalism and Applications

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