quantum dot – Page 3 – TechConnect Briefs

Multiplexed Proteolytic Enzyme Assay Based on Energy Transfer between Quantum Dots and Gold Nanoparticles

Oh Y.H., Kim H-S, Kim Y.P., Kim H-S, Kim Y.P., Korea Abvanced Institute of science and Technology, KR

Proteases are key enzymes that regulate both normal and malignant tumor progress. Evaluating these enzymes and their inhibitors, therefore, has a great potential to diagnostics or therapeutic treatment against specific diseases or disorders. We have [...]

Synthesis, Extraction and Surface Modification Of (Zn,Mn)Se Nanocrystals Using Microemulsions As Templates

Heckler T., Qiu Q., Wang J., Mei B., Mountziaris T.J., University of Massachusetts, US

This research focuses on the novel room temperature synthesis of (Zn,Mn)Se quantum dots that exhibit luminescence peaks at longer wavelengths than the ZnSe bulk emission, due to the Mn ions incorporated in the ZnSe lattice. [...]

Resist Mask Designs for Quantum Dot Transistor Using E-Beam Nanolithography

Hashim U., Sutikno S., Jamal Z.A.Z., Northern Malaysia University College of Engineering (KUKUM), MY

Quantum dot single electron transistor (QD SET) can be fabricated using e-beam nanolithography (EBL) and then continued by combination process of pattern dependent oxidation (PADOX) and high density plasma etching. EBL was used to pattern [...]

Single dot luminescence characteristics of CdSe/ZnS core-shell structured quantum dots with different ligands

Yu H., Song N.W., Moon D.W., Shin S.K., Korea Research Institute of Standards and Science, KR

Chemical derivatizations with different ligands were perfomed on CdSe/ZnS core-shell quantum dots (QDs). The role of ligands serves to increase water solubility and bio-compatibility of QDs for in-vivo biomedical fluorescence imaging. These QDs were synthesized [...]

Reproducibility of Silicon Single Electron Quantum Dot Transistor

Hasim U., Sutikno S., Nothern Malaysia University College of Engineering, MY

In principle, based on the form of tunnel junction, single electron transistor (SET) can be classified into four types, i.e. nanowire SET, quantum dot SET, nanotube SET and point contact SET. Another classification is SET [...]

Magnetic switch induced electron transport in a double quantum dot

Popsueva V., Førre M., Hansen J.P., University of Bergen, NO

The paper presents a theoretical analysis of controlled singleelectron quantum transport in a two dimensional double quantumdot. The transport is induced by a time dependent magnetic field.From solving the time dependent Schrodinger equation we find [...]

Quantum Dot Probes for Tracking Nerve Growth Factor Ligand-Receptor Dynamics in Live Neurons

Sundara Rajan S., Vu T.Q., Oregon Health and Science University, US

The mechanisms by which cell-surface receptors interact with their specific ligands to initiate signaling cascades is a dynamic process which involves ligand-receptor binding, transport, and clearance across and within the cell plasma membrane. Nerve growth [...]

Fast and Easy Detection System of Protein Glycosylation by Using Resonant Energy Transfer between Nanoparticles

Oh E., Lee D., Kim H-S, Korea Advanced Institute of Science and Technology, KR

We construct the new glycosylation detection system using Resonance Energy Transfer (RET) between gold nanoparticles (AuNPs) and semiconductor quantum dots (QDs). RET can be induced by biomolecular interactions between concanavalin A (conA)-conjugated AuNP (conA-AuNP) as [...]

Curing Quantum Dots using Inductively Coupled Argon Plasma

Mei T., Nie D., Djie H.S., Ooi B.S., Nanyang Technological University, SG

Great advancement achieved in quantum dot (QD) growth using Molecular Beam Epitaxy or Metal-Organic Vapor Phase Epitaxy (MOVPE) has made QD-based devices demonstrate superior performances.1 However, QD structures are highly-strained material systems grown under low [...]

Kinetic Monte Carlo Simulation of Defect-Mediated Organization in Quantum Dot Self-Assembly

Gao D., Kaczynski A., Jaszczak J.A., Michigan Technological University, US

A good understanding of quantum dot (QD) self assembly not only has the potential to augment standard materials patterning technologies but also has applications in industrial nanostructure fabrications. Many observations and insights about self-assembled quantum [...]