University of Cambridge – TechConnect Briefs

Promoter-free continuous synthesis of high purity single wall carbon nanotube fibers

Paukner C., Koziol K.K.K., University of Cambridge, UK

We report a new strategy towards the control of carbon nanotube (CNT) structure and continuous fiber formation using a floating catalyst direct spinning CVD process. In the procedures used to date, a sulphur promoter precursor [...]

Morphology control of carbon nanotubes in continuously spun fibres

Sundaram R.M., Koziol K.K., Windle A.H., University of Cambridge, UK

Multifunctional attributes of carbon nanotubes (CNTs) have attracted the focus of industrial and academic communities alike. Translating the properties of individual CNTs into their macroscopic ensembles – fibres, yarns or films - is envisaged to [...]

Monitoring volatiles and flammable gases without electronics

Martinez-Hurtado J.L., University of Cambridge, UK

A sensor that integrates the detection and transduction of the signal to a display is presented in this work. The device comprises a holographic grating embed in a polymer. The polymer is an elastomer that [...]

UltraDOTs : Multifunctional Ion-Selective Delivery Capsules

Walters J.D., Hall E.A.H., University of Cambridge, UK

Emerging from the sensing capabilities of the particle sensors, we have developed a platform technology to produce a family of monodisperse capsule structures ranging from the nano to the micro in their diameters and shell [...]

Imbibition dynamics of nano-particulate ink-jet drops on micro-porous media

Hsiao W.-K., Hoath S.D., Martin G.D., Hutchings I.M., Jones S., Chilton N., University of Cambridge, UK

Our study represents the first investigation of imbibition of ink-jet deposited nano-Cu colloid drops on a proprietary coated paper substrate. Using high speed imaging apparatus to capture the depsoition of ink-jet drops, the timescales of [...]

Nanostructured LZO Films: Synthesis and Characterizations

Chen H-S, Kumar R.V., University of Cambridge, UK

Nanocrystalline lanthanum zirconium oxide (LZO) films have been successfully synthesized by a wet-chemical route, using dried lanthanum acetate, zirconium propoxide, propoionic acid, acetic acid glacial, and anhydrous methanol. X-ray 2 -scan diffraction patterns of the [...]

Magnetic Devices for Ultra High Throughput Biological Analysis

Mitrelias T., Jiang Z., Llandro J., Bland J.A.C., University of Cambridge, UK

In this report we present an integrated microfluidic cell for detecting and sorting magnetic beads in solution. The cell has been developed for magnetic biosensing, which comprises both magnetoresistive sensors optimized for the detection of [...]

Effects of Etch Holes in Microelectromechanical Resonators

Yan J., Seshia A.A., University of Cambridge, UK

Micromachining processes such as surface machining of polysilicon microstructures or SOI-based processes often require etch holes to be created in the structural layer for purposes of releasing the mechanical structures. The present work examines the [...]

Identification of Anisoelasticity and Nonproportional Damping in MEMS Gyroscopes

Phani A.S., Seshia A.A., University of Cambridge, UK

A novel approach to identify nonproportional damping and structural anisoelasticities in vibratory MEMS gyroscopes is proposed in this paper. The proposed identification method is based on measured vibration data in the form of frequency response [...]

Coupling Of Resonant Modes In Micromechanical Vibratory Rate Gyroscopes

Phani A.S., Seshia A.A., Palaniapan M., Howe R.T., Yasaitis J., University of Cambridge, UK

Analytical models are presented to describe the resonant modal coupling behaviour of z-axis micromechanical vibratory rate gyroscopes fabricated in an integrated polysilicon surface micromachining process. The models are then applied to predict the extent of [...]