Manipulation of a one dimensional molecular assembly of helical superstructures by dielectrophoresis

Kubo, Wakana; Fujikawa, Shigenori
October 2009
Applied Physics Letters;10/19/2009, Vol. 95 Issue 16, p163110
Academic Journal
We demonstrate that it is possible to manipulate helical superstructures composed of self-assembled chiral lipids by dielectrophoresis while preserving the shape of the superstructures. Alignment and migration of the helical fibers were only observed for an applied ac field of 1 kHz–1 MHz. The structural and physical properties of the helical fibers were preserved even under ac electric fields. This is the first report on the manipulation of a helical molecular assembly wherein the original properties of the assembly remained unchanged even after manipulation.


Related Articles

  • Analytical solutions for the electric field and dielectrophoretic force in a dielectrophoretic focusing electrode structure. Tao Sun; Green, Nicolas G.; Morgan, Hywel // Applied Physics Letters;4/28/2008, Vol. 92 Issue 17, p173901 

    The analysis of the movement of particles in a nonuniform field requires accurate knowledge of the electric field distribution. In this letter, the Schwarz–Christoffel mapping method is used to analytically solve the electric field distribution in a dielectrophoretic focusing electrode...

  • Characterization of electrokinetic mobility of microparticles in order to improve dielectrophoretic concentration. Martínez-López, José I.; Moncada-Hernández, Héctor; Baylon-Cardiel, Javier L.; Martínez-Chapa, Sergio O.; Rito-Palomares, Marco; Lapizco-Encinas, Blanca H. // Analytical & Bioanalytical Chemistry;May2009, Vol. 394 Issue 1, p293 

    Insulator-based dielectrophoresis (iDEP), an efficient technique with great potential for miniaturization, has been successfully applied for the manipulation of a wide variety of bioparticles. When iDEP is applied employing direct current (DC) electric fields, other electrokinetic transport...

  • Programmable Fragrance by Manipulation and Releasing of Essential Oil Droplets on an Electro-Microfluidic Platform. WEI-KAI HUANG; YI-TING LO; SHIH-KANG FAN // International Journal of Transport Phenomena;2015, Vol. 14 Issue 1, p15 

    We present an electro-microfluidic (EMF) platform capable of manipulations of essential oil droplets and releasing of the fragrance. Different essential oil droplets, including orange, rosewood and clove, representing top, middle and base notes of the fragrance, respectively, with the volume of...

  • Controlled assembly of zinc oxide nanowires using dielectrophoresis. Wang, Dingqu; Zhu, Rong; Zhou, Zhaoying; Ye, Xiongying // Applied Physics Letters;3/5/2007, Vol. 90 Issue 10, p103110 

    A structure similar to a field effect transistor with two isolated top electrodes comprising the source and drain and a lower substrate electrode as the gate was used for the dielectrophoresis-based assembly of zinc oxide nanowires. The results reveal that the assembly of nanowires is...

  • Separation characteristics of animal cells using a dielectrophoretic filter. Hirota, Yusuke; Hakoda, Masaru; Wakizaka, Yoshikazu // Bioprocess & Biosystems Engineering;Jun2010, Vol. 33 Issue 5, p607 

    The separation characteristics of a wire–wire type dielectrophoretic (DEP) filter were evaluated using animal cells. The separation of cells with different activities was examined using a DEP filter. The specific growth rate of the cells in retention liquid was larger than that in...

  • Quasistatic force and torque on a spherical particle under generalized dielectrophoresis in the vicinity of walls. Lo, Y. J.; Lei, U. // Applied Physics Letters;12/21/2009, Vol. 95 Issue 25, p253701 

    Quasistatic force and torque were derived on a spherical particle with radius R at a distance h next to a wall, or to the closer wall for case between two parallel walls, under generalized dielectrophoresis using effective moment approach and image method. The wall effect is minor for...

  • LIGHT-INDUCED DIELECTROPHORESIS FOR THE IDENTIFICATION OF VIABLE, OPTIMAL QUALITY SPERM WITHIN AN UNWASHED SEMEN SAMPLE: FEASIBILITY AND SAFETY STUDIES. Garcia, M. M.; Ohta, A. T.; Banie, L.; Valley, J. K.; Boscardin, W. J.; Lue, T. F.; Wu, M. C. // Reproductive BioMedicine Online (Reproductive Healthcare Limited;Oct2010 S3 Supplemen, Vol. 20, pS6 

    Introduction and Purpose: ICSI (intracytoplasmic sperm injection) outcomes are suboptimal. There is currently no means by which to assess sperm quality in sperm reserved for ICSI. Herein, we introduce application of a novel, non-invasive, light-based dielectrophoresis technology, termed...

  • Alternating current dielectrophoresis of carbon nanotubes. Zhang, Zhi-Bin; Liu, Xian-Jie; Campbell, Eleanor E. B.; Zhang, Shi-Li // Journal of Applied Physics;9/1/2005, Vol. 98 Issue 5, p056103 

    We report on the deposition of individual semiconducting single-walled carbon nanotubes (s-SWNTs), suspended in an aqueous solution of sodium dodecylsulfate (SDS), onto predefined electrodes using alternating current dielectrophoresis up to 100 MHz. The successful deposition is attributed to the...

  • Dielectrophoresis of nanoscale double-stranded DNA and humidity effects on its electrical conductivity. Tuukkanen, S.; Kuzyk, A.; Toppari, J. J.; Hytönen, V. P.; Ihalainen, T.; Törmä, P. // Applied Physics Letters;10/31/2005, Vol. 87 Issue 18, p183102 

    The dielectrophoresis method for trapping and attaching nanoscale double-stranded DNA between nanoelectrodes was developed. The method gives a high yield of trapping single or a few molecules only which enables transport measurements at the single molecule level. Electrical conductivity of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics