Schmidt, Hendrik

[["dc.bibliographiccitation.artnumber","1702473"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","43"],["dc.bibliographiccitation.journal","Advanced Materials"],["dc.bibliographiccitation.lastpage","8"],["dc.bibliographiccitation.volume","29"],["dc.contributor.author","Wang, Yonggui"],["dc.contributor.author","Groszewicz, Pedro Braga"],["dc.contributor.author","Rosenfeldt, Sabine"],["dc.contributor.author","Schmidt, Hendrik"],["dc.contributor.author","Volkert, Cynthia A."],["dc.contributor.author","Vana, Philipp"],["dc.contributor.author","Gutmann, Torsten"],["dc.contributor.author","Buntkowsky, Gerd"],["dc.contributor.author","Zhang, Kai"],["dc.date.accessioned","2018-08-14T16:15:11Z"],["dc.date.accessioned","2020-05-14T13:29:54Z"],["dc.date.available","2018-08-14T16:15:11Z"],["dc.date.available","2020-05-14T13:29:54Z"],["dc.date.issued","2017"],["dc.description.abstract","Self-assembly of nanoparticles (NPs) forming unique structures has been investigated extensively over the past few years. However, many self-assembled structures by NPs are irreversible, because they are generally constructed using their suspensions. It is still challenging for NPs to reversibly self-assemble in dry state, let alone of polymeric NPs with general sizes of hundreds of nm. Herein, this study reports a new reversible self-assembly phenomenon of NPs in dry state, forming thermoreversible strip-like supermolecular structures. These novel NPs of around 150 nm are perfluorinated surface-undecenoated cellulose nanoparticles (FSU-CNPs) with a core-coronas structure. The thermoreversible self-assembled structure is formed after drying in the air at the interface between FSU-CNP films and Teflon substrates. Remarkably, the formation and dissociation of this assembled structure are accompanied by a reversible conversion of the surface hydrophobicity, film transparency, and anisotropic properties. These findings show novel feasibility of reversible self-assembly of NPs in dry state, and thereby expand our knowledge of self-assembly phenomenon."],["dc.identifier.doi","10.1002/adma.201702473"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65433"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15301"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","Thermo-Reversible Self-Assembly of Perfluorinated Core-Coronas Cellulose-Nanoparticles in Dry State"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Physical Review Materials"],["dc.bibliographiccitation.volume","4"],["dc.contributor.author","Schmidt, H."],["dc.contributor.author","Krisponeit, J.-O."],["dc.contributor.author","Weber, N."],["dc.contributor.author","Samwer, K."],["dc.contributor.author","Volkert, Cynthia Ann"],["dc.date.accessioned","2021-04-14T08:24:21Z"],["dc.date.available","2021-04-14T08:24:21Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1103/PhysRevMaterials.4.113610"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81256"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area A | A01 Reibung unter aktiver Kontrolle in Systemen mit optimierten Freiheitsgraden"],["dc.relation.eissn","2475-9953"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","Switching friction at a manganite surface using electric fields"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2003524"],["dc.bibliographiccitation.journal","Advanced Science"],["dc.contributor.author","Weber, Niklas A."],["dc.contributor.author","Schmidt, Hendrik"],["dc.contributor.author","Sievert, Tim"],["dc.contributor.author","Jooss, Christian"],["dc.contributor.author","Güthoff, Friedrich"],["dc.contributor.author","Moshneaga, Vasily"],["dc.contributor.author","Samwer, Konrad"],["dc.contributor.author","Krüger, Matthias"],["dc.contributor.author","Volkert, Cynthia A."],["dc.date.accessioned","2021-04-14T08:29:31Z"],["dc.date.available","2021-04-14T08:29:31Z"],["dc.date.issued","2021"],["dc.description.abstract","Despite the huge importance of friction in regulating movement in all natural and technological processes, the mechanisms underlying dissipation at a sliding contact are still a matter of debate. Attempts to explain the dependence of measured frictional losses at nanoscale contacts on the electronic degrees of freedom of the surrounding materials have so far been controversial. Here, it is proposed that friction can be explained by considering the damping of stick-slip pulses in a sliding contact. Based on friction force microscopy studies of La(1−x)SrxMnO3 films at the ferromagnetic-metallic to a paramagnetic-polaronic conductor phase transition, it is confirmed that the sliding contact generates thermally-activated slip pulses in the nanoscale contact, and argued that these are damped by direct coupling into the phonon bath. Electron-phonon coupling leads to the formation of Jahn–Teller polarons and to a clear increase in friction in the high-temperature phase. There is neither evidence for direct electronic drag on the atomic force microscope tip nor any indication of contributions from electrostatic forces. This intuitive scenario, that friction is governed by the damping of surface vibrational excitations, provides a basis for reconciling controversies in literature studies as well as suggesting possible tactics for controlling friction."],["dc.identifier.doi","10.1002/advs.202003524"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82923"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area A | A01 Reibung unter aktiver Kontrolle in Systemen mit optimierten Freiheitsgraden"],["dc.relation","SFB 1073 | Topical Area C | C02 In situ hochauflösende Untersuchung des aktiven Zustands bei der photo- und elektrochemischen Wasserspaltung"],["dc.relation","SFB 1073 | Topical Area A: Control of dissipation"],["dc.relation.eissn","2198-3844"],["dc.relation.issn","2198-3844"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.rights","CC BY 4.0"],["dc.title","Polaronic Contributions to Friction in a Manganite Thin Film"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]