|  Friction | 
In General > s.a. Stokes' Law.
  * Idea: The force resisting relative
    motion between solid surfaces or fluid layers sliding against each other.
  * History: In the 1700s,
    Amontons and Coulomb found that the force needed to push an object across
    a surface depends on its mass, but not on the area of the contact surface
    (a relationship embodied in the first of Guillaume Amontons's two laws of
    friction); Microscopic 'asperities' on the surfaces have traditionally been
    blamed for this; In fact, lateral friction or retention force is proportional to
    the true contact area; In 2001, Gerde & Marder proposed a 'micro-crack' theory.
  * Question: What are
    the relative contributions of electrons and phonons to friction?
    [@ see Phy(10)].
  @ General references: Krim SA(96)oct;
    Hähner & Spencer PT(98)sep [David Tabor and "tribology"];
    Barrena et al PRL(99)
    + pn(99)mar [origin];
    Gerde & Marder Nat(01)sep
    + pw(01)sep [new theory];
    Krim AJP(02)sep [microscopic and macroscopic, RL];
    Barnett & Cresser PRA(05) [Markovian quantum theory];
    Ferrari & Gruber EJP(10) [from mechanics to thermodynamics];
    Ichinose a1404-conf [non-equilibrium statistical approach].
  @ Experiments and models: Besson et al AJP(07)dec;
    Ben-David & Fineberg PRL(11)
    + news sn(11)jun [limitations of models];
    Fröhlich et al JMP(11),
    CMP(12) [Hamiltonian models];
    Dillavou & Rubinstein PRL(18) [friction between two surfaces depends on their contact history];
    Minkin & Sikes AJP(18)jan [rolling friction].
  @ Books: Persson 00 [sliding, e1 r PT(99)jan];
    Mate 07
      [r JPA(08)];
    Gnecco & Meyer 15.
  @ Related topics: Salazar et al PhysEd(90) [in the direction of the center of mass motion];
    Johansen & Sornette PRL(99)
    + pn(99)jun [and sound];
    Raine EJP(05) [fluctuations and dissipation];
    Drummond PRL(12)
    + news Phy(12)oct [electric fields can modify frictional force between surfaces];
    Martin & Erdemir PT(18)apr,
    news sn(19)aug [superlubricity];
    Djokić TPT(20)may
      [sleeve oscillating on rotating bar between springs];
    > s.a. dissipation.
  > Online resources:
    see Wikipedia pages on Friction
    and Tribology.
Applications / Examples
  > s.a. gravitomagnetism [gravitomagnetic dynamical friction].
  @ Air drag / resistance:
    Deakin & Troup AJP(98)jan [projectile motion];
    Graney a1205 [Riccioli's work];
    > s.a. Projectile Motion.
  @ At the atomic scale:
    Ringlein & Robbins AJP(04)jul [atomic origins];
    Barton NJP(10),
    NJP(11)
      [model with van der Waals force between two atoms];
    Sivebaek et al PRL(12) [frictional properties of lubricants on molecular length scales];
    Vanossi et al RMP(13) [microscopic models, rev];
    Egberts & Carpick Phy(14).
  @ Nanoscale particles / devices:
    Krim pw(05)feb;
    news pw(06)jul [overcoming friction];
    Dietzel et al PRL(13) ["structural lubricity" and ultralow friction].
  @ Mesoscale: Peters CP(04);
    Peters phy/06 [suggestion of 11-pJ quantum of energy].
  @ Fluids: Tadmor PRL(09) [more general behavior, liquid drop and substrate];
    Ehlinger et al PRL(13) ["ball bearings" for liquid-liquid interfaces];
    Bistafa a1801 [Euler's treatise].
  @ Other examples:
    Scherge & Gorb 01 [tribology in biology];
    Cross AJP(02)nov [bouncing ball],
    AJP(05)sep [increase with speed];
    Liu et al PRL(12) [microscale superlubricity in graphite];
    news pw(10)oct [negative friction with an atomic-force-microscope tip on a graphite surface];
    news tum(13)may [new kind of friction discovered, "desorption stick"];
    Liefferink et al PRX(21) + Viewpoint [ice friction].
Quantum Friction
  * Idea: There are claims
    that electromagnetic vacuum fluctuations give rise to a Casimir-like non-contact
    "quantum friction" between moving plates, whose magnitude is proportional
    to the particle's velocity, but the claims have been disputed by other authors.
  @ General references: Philbin & Leonhardt NJP(09)-a0810 [no];
    Pendry NJP(10) [refute argument against];
    Leonhardt NJP(10)-a1003 [reply];
    Pendry NJP(10);
    Dalvit et al LNP(11)-a1006 [fluctuations, dissipation and friction];
    Silveirinha NJP(14)-a1307; 
    Intravaia et al PRA(14) [and fluctuation theorems];
    Pieplow & Henkel JPCM(15)-a1402 [Čerenkov friction];
    Høye & Brevik EPJD(14)-a1403,
    JPCM(15)-a1409 [at zero and non-zero T];
    Zhdanov a1612 [environment engineering perspectives];
    Lombardo et al a2103 [detectable signature];
    > s.a. casimir effect.
  @ Models, approaches: Nesterenko & Nesterenko JETPL(14)-a1403 [macroscopic approach];
    Bondar et al JPCL(16)-a1412 [progress towards a universal valid Lindbladian model];
    Farías et al PRD(15)-a1412 [functional approach];
    Sonnleitner et al PRL(17)-a1610 [friction on a moving excited two-level atom];
    Barnett & Sonnleitner JMO(17)-a1709 [and spontaneous emission].
  @ Applications, examples:
    Dupays et al a1010 [and neutron-star evolution];
    Manjavacas & García de Abajo PRA(10)
    + news ns(11)feb [on a spinning particle];
    Tsekov ChPL(12)-a1203 [for a light particle in a heavy classical gas];
    Farias et al PRD(17)-a1612 [between graphene sheets];
    news sn(20)jan [fast rotator].
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