The field of physics that deals with the macroscopic physical properties of matter is named condensed matter physics. Specifically, it's worried about "condensed"phases that show up whenever the number of particles during a system is extremely huge and therefore the collaborations between them are strong.
Recommended Conferences: Materials Physics Conferences | Materials Science Conferences | Magnetic Materials Conferences | Condensed Matter Physics Conferences | Physics Conferences
Related Societies:
Europe: European Materials Research Society (E-MRS) | European Physical Society (EPS) | French Society of Physics (SFP) | Institute of Physics (IOP) | German Physical Society (DPG) | Italian Physical Society | EFOMP | Royal Spanish Society of Physics (RSEF) | European Optical Society
USA: Materials Research Society (MRS of the USA) | American Institute of Physics (AIP) | American Physical Society (APS) | Ontario Association of Physics Teachers | Canadian Association of Physicists | Brazilian Physical Society | American Association of Physics Teachers
Asia-Pacific: Chinese Materials Research Society (C-MRS) | Australian Institute of Physics | Chinese Physical Society | Indian Physical Society | Association of Asia Pacific Physical Societies | Philippine Physics Society | Japan Society of Applied Physics