Browsing Singapore-MIT Alliance (SMA) by Author "Lee, Jim Yang"
Now showing items 1-16 of 16
-
Biological Routes to Gold Nanoplates
Xie, Jianping; Lee, Jim Yang; Wang, Daniel I.C.; Ting, Yen Peng (2007-01)Gold nanoplates are promising for optical and electronic applications; but their synthesis is complex, often requiring a seeded growth process or spherical to triangle morphology transformation. We have discovered a ... -
Biological Routes to Gold Nanoplates
Xie, Jianping; Lee, Jim Yang; Ting, Yen Peng (2005-01)Much effort has been devoted to the synthesis of gold nanoparticles with different shapes, including the zero-dimensional nanospheres, one dimensional nanorods, and two-dimensional nanoplates. Compared to zero or one ... -
A Computational Study to Understand the Surface Reactivity of Gold Nanoparticles with Amines and DNA
Pong, Boon-Kin; Lee, Jim Yang; Trout, Bernhardt L. (2006-01)We conducted a computational adsorption study of methylamine on various surface-models of gold nanoparticle which is facetted by multiple {111} and {100} planes. In addition to these flat surfaces, our models include the ... -
Core-Shell Assisted Bimetallic Assembly of Pt and Ru Nanoparticles by DNA Hybridization
Lee, Jim Yang; Yang, Jun; Too, Heng-Phon; Chow, Gan-Moog; Gan, Leong M. (2005-01)We have discovered that the current protocols to assemble Au nanoparticles based on DNA hybridization do not work well with the small metal nanoparticles (e.g. 5 nm Au, 3.6 nm Pt and 3.2 nm Ru particles). Further investigations ... -
Design, Fabrication and Functional Analysis of a New Protein Array Based on ssDNA-based Assembly
Ajikumar, Parayil Kumaran; Ng, Jin Kiat; Tang, Yew Chung; Lee, Jim Yang; Stephanopoulos, Gregory; e.a. (2006-01)In the post genomic era, proteomics has enormous potential in biology and medicine. Among the various bioanalytical tools developed, protein microarray is one of the recent advancements which offer high throughput profiling ... -
Electrochemical Insertion/extraction of Lithium in Multiwall Carbon Nanotube/Sb and SnSb₀.₅ Nanocomposites
Chen, Wei Xiang; Lee, Jim Yang; Liu, Zhaolin (2003-01)Multiwall carbon nanotubes (CNTs) were synthesized by catalytic chemical vapor deposition of acetylene and used as templates to prepare CNT-Sb and CNT-SnSb₀.₅ nanocomposites via the chemical reduction of SnCl₂ and SbCl₃ ... -
Preparation of DNA-Functionalised CdSe/ZnS Quantum Dots
Pong, Boon Kin; Trout, Bernhardt L.; Lee, Jim Yang (2007-01)We functionalised core-shell CdSe/ZnS quantum dots (QDots) with short-chain 3-mercaptopropionic acid (3MPA) to render these nanocrystalline semiconductor water-soluble. The ligand-exchange reaction was significantly improved ... -
Preparation of PtNi Nanoparticles for the Electrocatalytic Oxidation of Methanol
Deivaraj, T.C.; Chen, Wei Xiang; Lee, Jim Yang (2004-01)Carbon supported PtNi nanoparticles were prepared by hydrazine reduction of Pt and Ni precursor salts under different conditions, namely by conventional heating (PtNi-1), by prolonged reaction at room temperature (PtNi-2) ... -
Profiling of ligand-receptor induced signalling- a novel protein chip technique
Murugesan, Nivetha; Du, Tai; Stephanopoulos, Gregory; Lee, Jim Yang; Too, Heng-Phon (2004-01)Cellular signalling pathways are the master controls of the biology of the cell, which includes cell communication, growth, death, and differentiation. The activities of these signalling proteins directly influence gene ... -
Protein Microarray: "Theory" to "Real Practice"
Ng, Jin Kiat; Ajikumar, Parayil Kumaran; Lee, Jim Yang; Stephanopoulos, Gregory; Too, Heng-Phon (2005-01)Fueled by ever-growing genomic information and rapid developments of proteomics–the large scale analysis of proteins and mapping its functional role has become one of the most important disciplines for characterizing complex ... -
SCAPA (Spacially Addressable Protein Array) – a Novel Protein Array for the Differential Profiling of Ligand-receptor Induced Signalling
Ajikumar, Parayil Kumaran; Ng, Jin Kiat; Lee, Jim Yang; Stephanopoulos, Gregory; Too, Heng-Phon (2005-01)While protein microarray technology has been successful in demonstrating its usefulness for large scale high-throughput proteome profiling, performance of antibody/antigen microarrays has been only moderately productive. ... -
Signaling Biochip – Profiling ligand-receptor induced signalling
Murugesan, Nivetha; Du, Tai; Stephanopoulos, Gregory; Lee, Jim Yang; Too, Heng-Phon (2004-01)Intracellular communication controls most cellular functions, which includes cell growth, death, and differentiation. The current challenge in cell biology is to decipher the spatial-temporal interactions of these highly ... -
Simple and Versatile Route to the Synthesis of Anisotropic Bimetallic Core-Shell and Monometallic Hollow Nanostructures: Ag (AgCl)-Pt Core-Shell Nanocubes and Pt Nanoboxes
Tan, Yen Nee; Wang, Daniel I.C.; Lee, Jim Yang (2007-01)We report herewith a simple and versatile route for the preparation of anisotropic Ag(AgCl)-Pt core-shell nanocubes and Pt nanoboxes. The core-shell nanocubes were first synthesized through the simultaneous reduction method ... -
Single Stranded DNA Induced Assembly of Gold Nanoparticles
Yang, Jun; Lee, Jim Yang; Deivaraj, T.C.; Too, Heng-Phon (2004-01)The binding affinity of single stranded DNA (ssDNA) for gold nanoparticle surface is studied in this work. The data indicate that the strength of interaction between ssDNA and Au particle surface is closely related to the ... -
Template Synthesis of Tubular Sn-Based Nanostructures for Lithium Ion Storage
Wang, Yong; Zeng, Hua Chun; Lee, Jim Yang (2006-01)We report herewith the preparation of SnO₂ nanotubes with very good shape and size control, and with and without a carbon nanotube overlayer, The SnO₂-core/carbon-shell nanotubes are excellent reversible Li ion storage ... -
Tubular Organization of SnO₂ Nanocrystallites for Improved Lithium Ion Battery Anode Performance
Wang, Yong; Lee, Jim Yang; Zeng, Hua Chun (2005-01)Porous tin oxide nanotubes were obtained by vacuum infiltration of tin oxide nanoparticles into porous aluminum oxide membranes, followed by calcination. The porous tin oxide nanotube arrays so prepared were characterized ...