Room temperature Coulomb blockade mediated field emission via self-assembled gold nanoparticles

2017 ◽  
Vol 381 (5) ◽  
pp. 476-480 ◽  
Author(s):  
Fei Wang ◽  
Jingyue Fang ◽  
Shengli Chang ◽  
Shiqiao Qin ◽  
Xueao Zhang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Field Emission ◽  
Coulomb Blockade ◽  
Room Temperature ◽  
Self Assembled

Coulomb blockade: Toward charge control of self-assembled GaN quantum dots at room temperature

2022 ◽  
Vol 120 (1) ◽  
pp. 012105
Author(s):  
C. A. Sgroi ◽  
J. Brault ◽  
J.-Y. Duboz ◽  
S. Chenot ◽  
P. Vennéguès ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Coulomb Blockade ◽  
Room Temperature ◽  
Charge Control ◽  
Self Assembled

Room temperature Coulomb blockade and Coulomb staircase from self‐assembled nanostructures

1996 ◽  
Vol 14 (3) ◽  
pp. 1178-1183 ◽  
Author(s):  
R. P. Andres ◽  
S. Datta ◽  
M. Dorogi ◽  
J. Gomez ◽  
J. I. Henderson ◽  
...  
Keyword(s):  
Coulomb Blockade ◽  
Room Temperature ◽  
Coulomb Staircase ◽  
Self Assembled

Room-temperature Coulomb blockade from a self-assembled molecular nanostructure

1995 ◽  
Vol 52 (12) ◽  
pp. 9071-9077 ◽  
Author(s):  
M. Dorogi ◽  
J. Gomez ◽  
R. Osifchin ◽  
R. P. Andres ◽  
R. Reifenberger
Keyword(s):  
Coulomb Blockade ◽  
Room Temperature ◽  
Self Assembled

Observations of thick and thin sections in a field-emission SEM

1994 ◽  
Vol 52 ◽  
pp. 1018-1019
Author(s):  
W. P. Wergin ◽  
S. Roy ◽  
E. F. Erbe ◽  
C. A. Murphy ◽  
C. D. Pooley
Keyword(s):  
Electron Microscope ◽  
Field Emission ◽  
Room Temperature ◽  
Osmium Tetroxide ◽  
Uranyl Acetate ◽  
Chemical Fixation ◽  
Thin Sections ◽  
Transmission Electron ◽  
Conventional Transmission Electron Microscope ◽  
Scanning Electron

Larvae of the nematode, Steinernema carpocapsae Weiser strain All, were cryofixed and freezesubstituted for 3 days in acetone containing 2% osmium tetroxide according to established procedures. Following chemical fixation, the nematodes were brought to room temperature, embedded in Spurr's medium and sectioned for observation with a Hitachi S-4100 field emission scanning electron microscope that was equipped with an Oxford CT 1500 Cryotrans System. Thin sections, about 80 nm thick, similar to those generally used in conventional transmission electron microscope (TEM) studies were mounted on copper grids and stained with uranyl acetate for 30 min and lead citrate for 5 min. Sections about 2 μm thick were also mounted and stained in a similar fashion. The grids were mounted on an Oxford grid holder, inserted into the microscope and onto a cryostage that was operated at ambient temperature. Thick and thin sections of the larvae were evaluated and photographed in the SEM at different accelerating voltages. Figs. 4 and 5 have undergone contrast conversion so that the images would resemble transmitted electron micrographs obtained with a TEM.

Seed-mediated synthesis and PEG coating of gold nanoparticles for controlling morphology and sizes

MRS Advances ◽  
2020 ◽  
Vol 5 (63) ◽  
pp. 3353-3360
Author(s):  
Susana Helena Arellano Ramírez ◽  
Perla García Casillas ◽  
Christian Chapa González
Keyword(s):  
Gold Nanoparticles ◽  
Polyethylene Glycol ◽  
Room Temperature ◽  
Colloidal Stability ◽  
Infrared Spectrometry ◽  
Ammonium Bromide ◽  
Chloroauric Acid ◽  
Vis Spectroscopy ◽  
Seed Mediated ◽  
Peg Coating

AbstractA significant area of research is biomedical applications of nanoparticles which involves efforts to control the physicochemical properties through simple and scalable processes. Gold nanoparticles have received considerable attention due to their unique properties that they exhibit based on their morphology. Gold nanospheres (AuNSs) and nanorods (AuNRs) were prepared with a seed-mediated method followed of polyethylene glycol (PEG)-coating. The seeds were prepared with 0.1 M cetyltrimethyl-ammonium bromide (CTAB), 0.005 M chloroauric acid (HAuCl4), and 0.01 M sodium borohydride (NaBH4) solution. Gold nanoparticles with spherical morphology was achieved by growth by aggregation at room temperature, while to achieve the rod morphology 0.1 M silver nitrate (AgNO3) and 0.1 M ascorbic acid solution were added. The gold nanoparticles obtained by the seed-mediated synthesis have spherical or rod shapes, depending on the experimental conditions, and a uniform particle size. Surface functionalization was developed using polyethylene glycol. Morphology, and size distribution of AuNPs were evaluated by Field Emission Scanning Electron Microscopy. The average size of AuNSs, and AuNRs was 7.85nm and 7.96 x 31.47nm respectively. Fourier transform infrared spectrometry was performed to corroborate the presence of PEG in the AuNPs surface. Additionally, suspensions of AuNSs and AuNRs were evaluated by UV-Vis spectroscopy. Gold nanoparticles were stored for several days at room temperature and it was observed that the colloidal stability increased once gold nanoparticles were coated with PEG due to the shield formed in the surface of the NPs and the increase in size which were 9.65±1.90 nm of diameter for AuNSs and for AuNRs were 29.03±5.88 and 8.39±1.02 nm for length and transverse axis, respectively.

Hierarchical nanostructures self-assembled from δ-MnO2 ultrathin nanosheets and Mn3O4 octahedrons for efficient room-temperature HCHO oxidation

2021 ◽  
Author(s):  
Lifang Qi ◽  
Yao Le ◽  
Chao Wang ◽  
Rui Lei ◽  
Tian Wu
Keyword(s):  
Room Temperature ◽  
Hierarchical Nanostructures ◽  
Low Level ◽  
Ultrathin Nanosheets ◽  
Self Assembling ◽  
Formaldehyde Oxidation ◽  
Self Assembled

Self-assembling ultrathin active δ-MnO2 nanosheets and Mn3O4 octahedrons into hierarchical texture enhances room-temperature formaldehyde oxidation at a low-level of Pt.

Ultraviolet Light-Densified Oxide-Organic Self-Assembled Dielectrics: Processing Thin-Film Transistors at Room Temperature

2021 ◽  
Vol 13 (2) ◽  
pp. 3445-3453
Author(s):  
Wei Huang ◽  
Xinge Yu ◽  
Li Zeng ◽  
Binghao Wang ◽  
Atsuro Takai ◽  
...  
Keyword(s):  
Thin Film ◽  
Ultraviolet Light ◽  
Thin Film Transistors ◽  
Room Temperature ◽  
Self Assembled
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