02396nas a2200241   4500008004100000245010500041210006900146260000800215300001400223490000600237520156300243653002501806653001701831653003201848653002501880100002501905700001701930700001801947700001701965700002101982700002002003856013102023       2016                        eng d00aSynthesis and characterization of novel polymer-hybrid silver nanoparticles and its biomedical study0 aSynthesis and characterization of novel polymerhybrid silver nan  cJUN  a1949-19570 v33 a<p>Hybrid polymer metal nanoparticles have advantages over conventional metal nanoparticles with respect to their stability, chemical resistance, antibacterial activity and drug delivery properties. In the current work, we have synthesized novel stimuli-responsive polymer hybrid silver nanoparticles using green synthesis method, where the plant extract is used as a reducing agent in the synthesis. Encapsulating metal nanoparticles with stimuli-responsive soft-polymeric system is novel and provides additional versatility whose functions and properties can be tailored by controlling any of the stimuli such as pH, temperature, ionic strength with respect to their antibacterial activity and physiological condition. Moreover, green synthesis methods have advantages over conventional methods involving chemical reducing agents that are often associated with environmental toxicity because of their enhanced antibacterial and other biological effects. The synthesized hybrid particles were characterized using Dynamic light scattering, UV-Visible spectroscopy and Small angle x-ray scattering. Further, we have investigated the antibacterial and cytotoxicity effect of these hybrid particles against different bacterial cells ( Salmonella) and mammalian cell lines (HCT116) respectively. These results are discussed in the light of previous studied work and these results suggest that our synthesized polymer hybrid nanoparticles are more antibacterial and less cytotoxic than the usual silver nanoparticles. (C) 2015Elsevier Ltd.All rights reserved.</p>10aAntibacterial effect10aCytotoxicity10aPolymeric hybrid particless10asilver nanoparticles1 aVerma, Suresh, Kumar1 aJha, Ealisha1 aKiran, K., J.1 aBhat, Suresh1 aSuar, Mrutyunjay1 aMohanty, P., S.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-novel-polymer-hybrid-silver-nanoparticles-and-its-biomedical02220nas a2200277   4500008004100000245009200041210006900133260000800202300001400210490000600224520132000230653001301550653002401563653001901587100002201606700001701628700001801645700002501663700002201688700002501710700001901735700002101754700002101775700002601796856012001822       2017                        eng d00aTemplate -free assembly in living bacterial suspension under an external electric field0 aTemplate free assembly in living bacterial suspension under an e  cMAR  a1019-10240 v23 a<p>Although template-assisted self-assembly methods are very popular in materials and biological systems, they have certain limitations such as lack of tunability and switchable functionality because of the irreversible association of cells and their matrix components. With an aim to achieve more tunability, we have made an attempt to investigate the self-assembly behavior of rod-shaped living bacteria subjected to an external alternating electric field using confocal microscopy. We demonstrate that rod-shaped living bacteria dispersed in a low salinity aqueous medium form different types of reversible freely suspended structures when subjected to an external alternating electric field. At low field strength, an oriented phase is observed where individual bacterium orients with its major axis aligned along the field direction. At intermediate field strength, bacteria align in the form of one-dimensional (1D) chains that lie along the field direction. Further, at high field strength, more bacteria associate with these 1D chains laterally to form a two-dimensional (2D) array. At higher bacterial concentration, these field-induced 2D arrays extend to form three-dimensional columnar structures. These results are discussed in the context of previously reported studies on bacterial self-assembly.</p>10aBacteria10aElectric Properties10aSelf- Assembly1 aSamantaray, Kunal1 aBhol, Prachi1 aSahoo, Bhaban1 aBarik, Subrat, Kumar1 aJathavedan, Kiran1 aSahu, Bikash, Ranjan1 aRanjan, Bikash1 aSuar, Mrutyunjay1 aBhat, Suresh, K.1 aMohanty, Priti, Sunda  uhttps://library.ncl.res.in/content/template-free-assembly-living-bacterial-suspension-under-external-electric-field