Thu, 07 Aug 2008 21:33:03 BST CiteULike: Author Gutsche http://www.citeulike.org/author/Gutsche CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dchen/article/1719295 <i>Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), Vol. 76, No. 3. (2007)</i><br /><br />Forces between single pairs of negatively charged micrometer-sized colloids in aqueous solutions of monovalent, divalent, or trivalent counter-ions at varying concentrations have been measured by employing optical tweezers. The experimental data have been analyzed by using the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory and a numerical solution of the Poisson-Boltzmann (PB) equation. With monovalent counterions, the data are well described by the DLVO and PB theories, suggesting that the DLVO theory is adequate to describe the colloidal forces at these conditions. At higher counter-ion valence, the approximations within the two theories become evident. Forces between single pairs of charged colloids in aqueous salt solutions C Gutsche UF Keyser K Kegler F Kremer P Linse doi:10.1103/PhysRevE.76.031403 Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), Vol. 76, No. 3. (2007) 2007-10-02T11:29:36-00:00 2007 Physical Review E (Statistical, Nonlinear, and Soft Matter Physics) 76 3 APS 2007 charge colloids cool opticaltweezer pre technique http://www.citeulike.org/user/BuckeyePhysicist/article/2865445 <i>(4 Jun 2008)</i><br /><br />We discuss a possible interpretation of the f0(980) and a0(980) mesons as hadronic molecules - bound states of K and Kbar mesons. Using a phenomenological Lagrangian approach we calculate the strong f0(980) to pi pi and a0(980) to pi eta as well as the electromagnetic f0(980) to gamma gamma and a0(980) to gamma gamma decays. The covariant and gauge invariant model, which also allows for finite size effects of the hadronic molecule, delivers results in good agreement with available data and results of other theoretical approaches. Hadronic Molecules and the f0(980)/a0(980) Tanja Branz Thomas Gutsche Valery Lyubovitskij (4 Jun 2008) 2008-06-05T13:23:18-00:00 2008 hadronicmolecule http://www.citeulike.org/user/dchen/article/2767397 <i>Physical Review Letters, Vol. 100, No. 11. (2008)</i><br /><br />Optical tweezers are employed to measure the forces of interaction within a single pair of DNA-grafted colloids, dependent on the molecular weight of the DNA chains, and the concentration and valence of the surrounding ionic medium. The resulting forces are short range and set in as the surface-to-surface distance between the colloidal cores reaches the value of the brush height. The measured force-distance relation is analyzed by means of a theoretical treatment that quantitatively describes the effects of compression of the chains on the surface of the opposite-lying colloid. Quantitative agreement with the experiment is obtained for all parameter combinations. Polyelectrolyte-Compression Forces between Spherical DNA Brushes Kati Kegler Martin Konieczny Gustavo Espinosa Christof Gutsche Matthias Salomo Friedrich Kremer Christos Likos doi:10.1103/PhysRevLett.100.118302 Physical Review Letters, Vol. 100, No. 11. (2008) 2008-05-07T21:14:58-00:00 2008 Physical Review Letters 100 11 APS biology colloids interaction opticaltweezer http://www.citeulike.org/user/tomfox/article/1119116 <i>Physical Review D (Particles and Fields), Vol. 70, No. 5. (2004)</i><br /><br />Cross sections for e+p neutral current deep inelastic scattering have been measured at a center-of-mass energy of sqrt(s)=318 GeV with the ZEUS detector at HERA using an integrated luminosity of 63.2 pb-1. The double-differential cross section, d2sigma/dxdQ2, is presented for 200 GeV2<Q2<30 000 GeV2 and for 0.005<x<0.65. The single-differential cross sections dsigma/dQ2, dsigma/dx and dsigma/dy are presented for Q2>200 GeV2. The effect of Z-boson-exchange is seen in dsigma/dx measured for Q2>10 000 GeV2. The data presented here were combined with ZEUS e+p neutral current data taken at sqrt(s)=300 GeV and the structure function F2em was extracted. All results agree well with the predictions of the Standard Model. High-Q[sup 2] neutral current cross sections in e[sup +]p deep inelastic scattering at sqrt(s) = 318 GeV S Chekanov M Derrick D Krakauer JH Loizides S Magill S Miglioranzi B Musgrave J Repond R Yoshida MCK Mattingly P Antonioli G Bari M Basile L Bellagamba D Boscherini A Bruni G Bruni Cara Romeo L Cifarelli F Cindolo A Contin M Corradi S De Pasquale P Giusti G Iacobucci A Margotti A Montanari R Nania F Palmonari A Pesci G Sartorelli A Zichichi G Aghuzumtsyan D Bartsch I Brock S Goers H Hartmann E Hilger P Irrgang HP Jakob A Kappes O Kind U Meyer E Paul J Rautenberg R Renner H Schnurbusch A Stifutkin J Tandler KC Voss M Wang A Weber DS Bailey NH Brook JE Cole GP Heath T Namsoo S Robins M Wing M Capua A Mastroberardino M Schioppa G Susinno JY Kim YK Kim JH Lee IT Lim MY Pac A Caldwell M Helbich X Liu B Mellado Y Ning S Paganis Z Ren WB Schmidke F Sciulli J Chwastowski A Eskreys J Figiel A Galas K Olkiewicz P Stopa L Zawiejski L Adamczyk T Bold Grabowska Bold D Kisielewska AM Kowal M Kowal T Kowalski M Przybycien L Suszycki D Szuba J Szuba A Kotanski W Slominski V Adler U Behrens I Bloch K Borras V Chiochia D Dannheim G Drews J Fourletova U Fricke A Geiser P Gottlicher O Gutsche T Haas W Hain S Hillert B Kahle U Kotz H Kowalski G Kramberger H Labes D Lelas H Lim B Lohr R Mankel Melzer Pellmann M Moritz CN Nguyen D Notz Nuncio Quiroz A Polini A Raval L Rurua U Schneekloth U Stosslein G Wolf C Youngman W Zeuner Lopez S Schlenstedt G Barbagli E Gallo C Genta PG Pelfer A Bamberger A Benen F Karstens D Dobur NN Vlasov M Bell PJ Bussey AT Doyle J Ferrando J Hamilton S Hanlon DH Saxon IO Skillicorn I Gialas T Carli T Gosau U Holm N Krumnack E Lohrmann M Milite H Salehi P Schleper S Stonjek K Wichmann K Wick A Ziegler Ar Collins Tooth C Foudas R Goncalo KR Long AD Tapper P Cloth D Filges M Kataoka K Nagano K Tokushuku S Yamada Y Yamazaki AN Barakbaev EG Boos NS Pokrovskiy BO Zhautykov D Son K Piotrzkowski F Barreiro C Glasman O Gonzalez L Labarga Del Peso E Tassi J Terron M Vazquez M Zambrana M Barbi F Corriveau S Gliga J Lainesse S Padhi DG Stairs R Walsh T Tsurugai A Antonov P Danilov BA Dolgoshein D Gladkov V Sosnovtsev S Suchkov RK Dementiev PF Ermolov Yu II Katkov LA Khein IA Korzhavina VA Kuzmin BB Levchenko Yu AS Proskuryakov LM Shcheglova SA Zotkin N Coppola S Grijpink E Koffeman P Kooijman E Maddox A Pellegrino S Schagen H Tiecke JJ Velthuis L Wiggers E de Wolf N Brummer B Bylsma LS Durkin TY Ling Cooper Sarkar A Cottrell RCE Devenish B Foster G Grzelak C Gwenlan S Patel PB Straub R Walczak A Bertolin R Brugnera R Carlin Dal Corso S Dusini A Garfagnini S Limentani A Longhin A Parenti M Posocco L Stanco M Turcato EA Heaphy F Metlica BY Oh JJ Whitmore Y Iga G D'Agostini G Marini A Nigro C Cormack JC Hart NA Mccubbin C Heusch IH Park N Pavel H Abramowicz A Gabareen S Kananov A Kreisel A Levy M Kuze T Fusayasu S Kagawa T Kohno T Tawara T Yamashita R Hamatsu T Hirose M Inuzuka H Kaji S Kitamura K Matsuzawa MI Ferrero V Monaco R Sacchi A Solano M Arneodo M Ruspa T Koop JF Martin A Mirea JM Butterworth Hall Wilton TW Jones MS Lightwood MR Sutton Targett Adams J Ciborowski R Ciesielski P Luzniak RJ Nowak JM Pawlak J Sztuk T Tymieniecka A Ukleja J Ukleja AF Zarnecki M Adamus P Plucinski Y Eisenberg LK Gladilin D Hochman U Karshon M Riveline D Kcira S Lammers L Li DD Reeder M Rosin AA Savin WH Smith A Deshpande S Dhawan S Bhadra CD Catterall S Fourletov G Hartner S Menary M Soares J Standage Zeus Collaboration doi:10.1103/PhysRevD.70.052001 Physical Review D (Particles and Fields), Vol. 70, No. 5. (2004) 2007-02-23T17:12:43-00:00 2004 Physical Review D (Particles and Fields) 70 5 APS science