【摘 要】
：
Piezoelectric MEMS resonators have long been explored in many applications such as wireless communication,chemical/biological sensing and microfluidic opera
【机 构】
：
StateKeyLaboratoryofPrecisionMeasuringTechnologyandInstruments,TianjinUniversity,92WeijinRoad,Nankai
【出 处】
：
The 14th International Conference on Microreactivity Technol
论文部分内容阅读
Piezoelectric MEMS resonators have long been explored in many applications such as wireless communication,chemical/biological sensing and microfluidic operation.Solid mounted resonator(SMR)is a Piezoelectric MEMS device in millimetre scale,which is able to generate GHz acoustic wave of varied power.In this report,we developed an acoustic microreactor which employed SMRs as platform for droplet scale reaction and hypersound(GHz bulk acoustic wave)as energy source to drive chemical conversion.First,we investigated the hypersound propagation in the liquid by using COMSOL simulation.Then,we shall show that droplet of varied solvents can be formed on the bulk acoustic wave devices after surface modification.Next,the resulting liquid droplet was irradiated by 1.56 GHz bulk acoustic waves in a home-made digital microreactor system.Droplet heating by acoustic viscous dampening into liquid was carefully investigated for several solvents with different properties.Droplet mixing by acoustic streaming was visualized and quantified with normal mixing index.In the end,we demonstrated that both chemical and biochemical reaction proceeded smoothly with hypersound irradiation at varied conditions and that online reaction monitoring was possible by measuring hypersound dissipation.
其他文献
Kinetics and thermodynamics of chemical reactions are crucial features for process development and process safety.Due to the proportionality of heat release
Microfluidic processes have gained considerable importance in the optimization and intensification of chemical reactions.Besides significant improvement in
As fluid flows at micro and nano scales usually lie in the laminar regime(with Reynolds number,Re ? 100),mixing based on molecular diffusion1 is generally p
Amperometric biosensors,being compact,relatively stable and inexpensive,have found their application in medicine,pharmacology,microbiology,food industry,def
Bioprocess optimization and development is expensive and time-consuming,and requires a reliable and scalable study of important process parameters in order
Process analytical technology is routinely used to monitor reactions; however,most monitoring methods require some type of calibration step to normalize the
Bromobutyl rubber(BIIR),an important synthetic rubber,not only maintains many desirable characteristics of traditional butyl rubber(IIR),but also has faster
Lanthanides with their strong photoluminescence and magnetic properties are important to many industrial applications.In the field of spent nuclear fuel rep
Latex coagulation is common practice in the industrial field,especially in polymer companies.In the polymer processes,the coagulation step is of primary imp