Nanofluidic device

AbgraU, P. and Nguyen, N. T. (2008) Nanofluidic devices and their applications. Anal Chem., 80, 2326-2341. 

Catechol A chip-based nanofluidic device Wolfram et al. 

As described earlier, azobenzene-functionalized nanoporous silica films exhibit dynamic photocontrol of their pore size, which in turn enables photoregulation of mass transport through the film. Their potential applications in nanofluidic devices, nanovalves, nanogates, smart gas masks, membrane separation, and controlled release can be anticipated. 

Some preparation methods specific to the formation of nanoparticle suspensions are provided in References [20,62,63]. Many such methods are simply conventional colloidal suspension preparation methods that have been extended to produce smaller particle sizes, but others involve novel approaches. Some ofthese involve making nanoemulsions as a first step. For example, membrane, microfluidic and nanofluidic devices have been used to make nanoscale emulsions of all kinds, as already noted earlier, and the emulsion droplets so generated can be used in turn to make sohd microparticles and nanoparticles. If the nanoparticles are intended to encapsulate other materials, then a double emulsification technique can be used, at elevated temperature, to prepare a multiple emulsion (i.e. 

Surface modification for microchannels in microfluidic and nanofluidic devices. 

The CVD method is an important method for the deposition of highly pure thin-layer films for microfluidic and nanofluidic devices. The most common use of CVD techniques in microfluidic and nanofluidic devices is for surface modification. With the rapid development in microfluidic... 

Microfluidic and nanofluidic chips have a wide range of applications in the chemical, biomedical, environmental, and biology areas, where a variety of chemical solutions are used. With the development of microfabrication technology, many new materials such as PDMS and poly (methyl methacrylate) (PMMA) are also employed for chip fabrication. Since each pair of sohd-liquid interface has its unique zeta potential and electroosmotic mobility, which have significant influences on flow control in such small-scale devices, it is very important to experimentally determine these two parameters using the current monitoring technique in order to develop microfluidic and nanofluidic devices for various applications. 

As an example, Bonthuis and co-workers studied the shape and dynamics of individual DNA molecules in nanochannels [8]. Some other nanofluidic devices have been proposed for studying the DNA molecules and other nanoscale biosamples [9, 10]. 

To calculate the energy-conversion efficiency of a nanofluidic device, three important transport properties have to be determined. For the pressure-driven flow, the streaming conductance is defined as the streaming current per unit applied pressure [10],... 

In most devices a group of materials is involved in order to realize different functions. Isotropic etch processes are mainly marked by high selectivity. But, the majority of materials used in different technical applications now demand the adaptation of etch baths and plasma procedures for the realization of new selectiv-ities. The protection of materials is of particular importance in the case of very thin films and small features. Selectivity also becomes important in the case of integration of a diversity of sensors and actuators consisting of different materials. This is the case, for example, in micro- and nanofluidic devices equipped with special micropattemed transducers. 

Gardeniers H, VandenBerg A (2004) Micro- and nanofluidic devices for environmental and biomedical applications. Int J Environ Chem 84 809-819... 

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