نتایج جستجو برای: analytical methodon the surface

تعداد نتایج: 16173143  

Journal: :Physical chemistry chemical physics : PCCP 2014
Evelyn Kämmer Konstanze Olschewski Thomas Bocklitz Petra Rösch Karina Weber Dana Cialla Jürgen Popp

This study demonstrates a new concept of calibrating surface enhanced Raman scattering (SERS) intensities without using additional substances as an internal standard and explores factors such as laser fluctuation and different Ag substrates, which affect the results of quantitative analyses based on SERS. To demonstrate the capabilities of the concept, the model analyte adenine has been chosen....

2014
Yuliang Xie Shikuan Yang Zhangming Mao Peng Li Chenglong Zhao Zane Cohick Po-Hsun Huang Tony Jun Huang

In this work, we develop an in situ method to grow highly controllable, sensitive, three-dimensional (3D) surface-enhanced Raman scattering (SERS) substrates via an optothermal effect within microfluidic devices. Implementing this approach, we fabricate SERS substrates composed of Ag@ZnO structures at prescribed locations inside microfluidic channels, sites within which current fabrication of S...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2012
Shohei Kaneda Koichi Ono Tatsuhiro Fukuba Takahiko Nojima Takatoki Yamamoto Teruo Fujii

This paper presents a simple method to change the hydrophilic nature of the glass surface in a poly(dimethylsiloxane) (PDMS)-glass hybrid microfluidic device to hydrophobic by an extra-heating step during the fabrication process. Glass substrates bonded to a native or oxygen plasma-treated PDMS chip having microchambers (12.5 mm diameter, 110 µm height) were heated at 200°C for 3 h, and then t...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2010
S D C Walsh M O Saar

This paper describes a method for implementing surface reaction kinetics in lattice Boltzmann simulations. The interpolated boundary conditions are capable of simulating surface reactions and dissolution at both stationary and moving solid-fluid and fluid-fluid interfaces. Results obtained with the boundary conditions are compared to analytical solutions for first-order and constant-flux kineti...

Journal: :Analytical chemistry 2013
Sixing Li Xiaoyun Ding Feng Guo Yuchao Chen Michael Ian Lapsley Sz-Chin Steven Lin Lin Wang J Philip McCoy Craig E Cameron Tony Jun Huang

The emerging field of droplet microfluidics requires effective on-chip handling and sorting of droplets. In this work, we demonstrate a microfluidic device that is capable of sorting picoliter water-in-oil droplets into multiple outputs using standing surface acoustic waves (SSAW). This device integrates a single-layer microfluidic channel with interdigital transducers (IDTs) to achieve on-chip...

Journal: :The Analyst 2016
Min Li Robbyn K Anand

In this minireview, we discuss advancements in ion concentration polarization (ICP)-based preconcentration, separation, desalination, and dielectrophoresis that have been made over the past three years. ICP as a means of controlling the distribution of the ions and electric field in a microfluidic device has rapidly expanded its areas of application. Recent advancements have focused on the deve...

Journal: :international journal of mining and geo-engineering 0
v b maji iit madras abite adugna govt of ethiopia

tunnelling through cities underlain by soft soil, commonly associated with soil movement around the tunnels and subsequent surface settlement. the predication of ground movement during the tunnelling and optimum support pressure could be based on analytical, empirical or the numerical methods. the commonly used earth pressure balance (epb) tunneling machines, uses the excavated soil in a pressu...

Journal: :Lab on a chip 2013
Lidija Malic Keith Morton Liviu Clime Teodor Veres

Early and accurate disease diagnosis still remains a major challenge in clinical settings. Biomarkers could potentially provide useful tools for the detection and monitoring of disease progression, treatment safety and efficacy. Recent years have witnessed prodigious advancement in biosensor development with research directed towards rapid, real-time, label-free and sensitive biomarker detectio...

Due to high surface-to-volume ratio of nanoscale structures, surface stress effects have a significant influence on their behavior. In this paper, a two-dimensional problem for an elastic layer that is bonded to a rigid substrate and subjected to an inclined concentrated line load acting on the surface of the layer is investigated based on Gurtin-Murdoch continuum model to consider surface stre...

Journal: Nanochemistry Research 2016

Analytical chemistry has experienced, as well as other areas of science, a big change due to the needs and opportunities provided by analytical nanoscience and nanotechnology. Now, nanotechnology is increasingly proving to be a powerful ally of analytical chemistry to achieve its objectives, and to simplify analytical processes. Moreover, the information needs arising from the growing nanotechn...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید