SG – Page 9 – TechConnect Briefs

Heat Transfer Cost-Effectiveness of Nanofluids

Xu D., Pan L., Yao Q., Institute og High Performance Computing, SG

When metal or oxide nano particles are dispersed in fluids to form nanofluids, the particles will improve the thermal conductivity of the fluids. Therefore, it is suggested to use nanofluids as coolant to improve heat-exchanger [...]

Full Coupling Simulation of a Membrane Micropump

Yao Q., Xu D., Pan L.S., Melissa Teo A.L., Ho W.M., Peter Lee V.S., Shabbir M., Institute of High Performance Computing, SG

The design of PZT actuated valveless membrane micropumps is a very complex process as it involves the knowledge of electro mechanics, solid mechanics and fluid mechanics. So far, there is no accurate, flexible and broadly [...]

A Novel Biodegradable System Based on BSA/PCL Core-shell Structured Nanofibers for Controlled Drug Delivery

Feng Y., Zhang Y.Z., Yong T., Ramakrishna S., National University of Singapore, SG

Electrospun core-shell structured nanofibers encapsulating BSA were explored as a potential drug delivery model in a biological system in present study. These nanofibers were prepared by coaxial electrospinning method with poly (caprolactone) (PCL) as the [...]

Preservation of DNA and Protein Biofunctionality for Bio-MEMS & NEMS Fabrication

Trau D., Jie J., Sucher N.J., National University of Singapore (NUS), SG

Microfabrication processes especially in silicon are not compatible with biomolecules. For example, silicon processing is commonly performed at high temperatures and makes use of aggressive chemicals. Under these conditions biological materials are denaturated or decomposed. [...]

Nanoengineered Encapsulation of Organic Microcrystal as Novel Biolabels

Mak W.C., Cheung K.Y., Renneberg R., Trau D., National University of Singapore, SG

Here we report on our latest developments for nanoengineered encapsulation and surface design of micro and submicron crystals for biochemcial assay. Improvement has been made by decreasing the size of the organic crystals to submicrometer [...]

Carbon Nanotube-based Labels for Sensitive Nucleic Acids Detection

Lee A.C., Ye J.S., Tan S.N., Poenar D., Sheu F.S., Heng C.K., Lim T.M., National University of Singapore, SG

A novel multiple-labelled conjugate with carbon nanotubes (CNTs) to amplify hybridization signal was developed to improve the nucleic acids assay sensitivity. The carboxylated CNTs were functionalized by horseradish peroxidase (HRP) and single-stranded oligonucleotides via diimide-activated [...]

Instability in flatband votlage of SiO2 embedded with silicon nanocrystals

Ng C.Y., Wong J.I., Yang M., Chen T.P., Nanyang Technological University, SG

In this work, the stability of the flatband voltage due to the Si-ions implantation into the SiO2 and subsequent annealing is being studied. There are lack of study on the impact of different annealing temperature [...]

Static dielectric constant of SiO2 embedded with silicon nanocrystals

Ng C.Y., Yang M., Wong J.I., Chen T.P., Nanyang Technological University, SG

The static dielectric constant of isolated silicon nanocrystal (nc-Si) embedded in a SiO2 thin film synthesized by Si+ implantation has been determined from capacitance measurement based on the Maxwell-Garnett effective medium approximation and the Stopping [...]

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 [...]

ZnO Nanoparticles Beaded Multiwalled Carbon Nanotubes

Zhu Y., Elim H.I., Foo Y.L., Triparthy S., Quek W.T., Ji W., Thong J., Sow C.H., National University of Singapore, SG

In this work, we report a hybrid system of ZnO nanoparticles on MWNT scaffolds synthesized via a very simple and straightforward process. This involved the coating of pure Zn on as-grown aligned MWNT films, followed [...]