نتایج جستجو برای: ionic mobility

تعداد نتایج: 139237  

Journal: :Applied physics letters 2012
Vivek V Thacker Sandip Ghosal Silvia Hernández-Ainsa Nicholas A W Bell Ulrich F Keyser

We demonstrate simultaneous measurements of DNA translocation into glass nanopores using ionic current detection and fluorescent imaging. We verify the correspondence between the passage of a single DNA molecule through the nanopore and the accompanying characteristic ionic current blockage. By tracking the motion of individual DNA molecules in the nanocapillary perpendicular to the optical axi...

2004
H. Backe A. Dretzke R. Horn T. Kolb W. Lauth M. Sewtz N. Trautmann

The aim of this project is the investigation of atomic properties of trans-einsteinium elements (Z > 99) in a buffergas cell. Of particular interest are measurements of ionic radii and bond length of simple molecular ions. Drift time measurements with which the ion mobility and in turn the ionic radii can be determined may present a direct access to investigate the increasing importance of rela...

2016
Hewei Luo Chenmin Yu Zitong Liu Guanxin Zhang Hua Geng Yuanping Yi Katharina Broch Yuanyuan Hu Aditya Sadhanala Lang Jiang Penglin Qi Zhengxu Cai Henning Sirringhaus Deqing Zhang

Organic semiconductors with high charge carrier mobilities are crucial for flexible electronic applications. Apart from designing new conjugated frameworks, different strategies have been explored to increase charge carrier mobilities. We report a new and simple approach to enhancing the charge carrier mobility of DPP-thieno[3,2-b]thiophene-conjugated polymer by incorporating an ionic additive,...

Journal: :The Journal of chemical physics 2008
Arpád W Imre Monika Schönhoff Cornelia Cramer

Ionically cross-linked polyelectrolyte complexes (PECs) of anionic poly(sodium 4-styrene sulfonate) (PSS) and cationic poly(diallyldimethylammonium chloride) (PDADMAC), xPSS.(1-x)PDADMAC, with molar fractions x ranging from 0.30 to 0.70, were prepared and subsequently dried. The PEC samples were analyzed by differential scanning calorimetry, and the ionic conductivity sigmadc of the samples was...

Journal: :Analytical chemistry 2012
Jos Quist Paul Vulto Heiko van der Linden Thomas Hankemeier

We present a novel concept of filtering based on depletion zone isotachophoresis (dzITP). In the micro/nanofluidic filter, compounds are separated according to isotachophoretic principles and simultaneously released selectively along a nanochannel-induced depletion zone. Thus, a tunable low-pass ionic mobility filter is realized. We demonstrate quantitative control of the release of fluorescent...

2014
Liu Yang Qiang Han Shuya Cao Jie Yang Junchao Yang Mingyu Ding

On-site analysis is an efficient approach to facilitate analysis at the location of the system under investigation as it can result in more accurate, more precise and quickly available analytical data. In our work, a novel self-made thermal desorption based interface was fabricated to couple solid-phase microextraction with ion mobility spectrometry for on-site water analysis. The portable inte...

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