Condensed matter physics
Condensed matter physics is the field of physics that deals with the macroscopic and microscopic physical properties of matter. In particular it is concerned with the "condensed" phases that appear whenever the number of constituents in a system is large and the interactions between the constituents are strong; the most familiar examples of condensed phases are solids and liquids, which arise from the electromagnetic forces between atoms. Condensed matter physicists seek to understand the behavior of these phases by using physical laws. In particular, they include the laws of quantum mechanics and statistical mechanics; the most familiar condensed phases are solids and liquids while more exotic condensed phases include the superconducting phase exhibited by certain materials at low temperature, the ferromagnetic and antiferromagnetic phases of spins on crystal lattices of atoms, the Bose–Einstein condensate found in ultracold atomic systems. The study of condensed matter physics involves measuring various material properties via experimental probes along with using methods of theoretical physics to develop mathematical models that help in understanding physical behavior.
The diversity of systems and phenomena available for study makes condensed matter physics the most active field of contemporary physics: one third of all American physicists self-identify as condensed matter physicists, the Division of Condensed Matter Physics is the largest division at the American Physical Society. The field overlaps with chemistry, materials science, nanotechnology, relates to atomic physics and biophysics; the theoretical physics of condensed matter shares important concepts and methods with that of particle physics and nuclear physics. A variety of topics in physics such as crystallography, elasticity, etc. were treated as distinct areas until the 1940s, when they were grouped together as solid state physics. Around the 1960s, the study of physical properties of liquids was added to this list, forming the basis for the new, related specialty of condensed matter physics. According to physicist Philip Warren Anderson, the term was coined by him and Volker Heine, when they changed the name of their group at the Cavendish Laboratories, Cambridge from Solid state theory to Theory of Condensed Matter in 1967, as they felt it did not exclude their interests in the study of liquids, nuclear matter, so on.
Although Anderson and Heine helped popularize the name "condensed matter", it had been present in Europe for some years, most prominently in the form of a journal published in English and German by Springer-Verlag titled Physics of Condensed Matter, launched in 1963. The funding environment and Cold War politics of the 1960s and 1970s were factors that lead some physicists to prefer the name "condensed matter physics", which emphasized the commonality of scientific problems encountered by physicists working on solids, liquids and other complex matter, over "solid state physics", associated with the industrial applications of metals and semiconductors; the Bell Telephone Laboratories was one of the first institutes to conduct a research program in condensed matter physics. References to "condensed" state can be traced to earlier sources. For example, in the introduction to his 1947 book Kinetic Theory of Liquids, Yakov Frenkel proposed that "The kinetic theory of liquids must accordingly be developed as a generalization and extension of the kinetic theory of solid bodies.
As a matter of fact, it would be more correct to unify them under the title of'condensed bodies'". One of the first studies of condensed states of matter was by English chemist Humphry Davy, in the first decades of the nineteenth century. Davy observed that of the forty chemical elements known at the time, twenty-six had metallic properties such as lustre and high electrical and thermal conductivity; this indicated that the atoms in John Dalton's atomic theory were not indivisible as Dalton claimed, but had inner structure. Davy further claimed that elements that were believed to be gases, such as nitrogen and hydrogen could be liquefied under the right conditions and would behave as metals. In 1823, Michael Faraday an assistant in Davy's lab liquefied chlorine and went on to liquefy all known gaseous elements, except for nitrogen and oxygen. Shortly after, in 1869, Irish chemist Thomas Andrews studied the phase transition from a liquid to a gas and coined the term critical point to describe the condition where a gas and a liquid were indistinguishable as phases, Dutch physicist Johannes van der Waals supplied the theoretical framework which allowed the prediction of critical behavior based on measurements at much higher temperatures.
By 1908, James Dewar and Heike Kamerlingh Onnes were able to liquefy hydrogen and newly discovered helium, respectively. Paul Drude in 1900 proposed the first theoretical model for a classical electron moving through a metallic solid. Drude's model described properties of metals in terms of a gas of free electrons, was the first microscopic model to explain empirical observations such as the Wiedemann–Franz law. However, despite the success of Drude's free electron model, it had one notable problem: it was unable to explain the electronic contribution to the specific heat and magnetic properties of metals, the temperature dependence of resistivity at low temperatures. In 1911, three years after helium was first liquefied, Onnes working at University of Leiden discovered superconductivity in mercury, when he observed the electrical resistivity of mercury to vanish at temperatures below a certain value; the phenomenon surprised the best theoretical physicists of the time, it remain
University of California, Santa Barbara
The University of California, Santa Barbara is a public research university in Santa Barbara, California. It is one of the 10 campuses of the University of California system. Tracing its roots back to 1891 as an independent teachers' college, UCSB joined the University of California system in 1944 and is the third-oldest general-education campus in the system. UCSB is one of America's Public Ivy universities, a designation that recognizes top public research universities in the U. S; the university is a comprehensive doctoral university, is organized into five colleges and schools offering 87 undergraduate degrees and 55 graduate degrees. UCSB was ranked 30th among "National Universities", fifth among U. S. public universities, 37th among Best Global Universities by U. S. News & World Report's 2019 rankings; the university was ranked 48th worldwide for 2016–17 by the Times Higher Education World University Rankings, 45th worldwide by the Academic Ranking of World Universities in 2017. UC Santa Barbara is a high-activity research university with 10 national research centers, including the renowned Kavli Institute for Theoretical Physics and the Center for Control, Dynamical-Systems and Computation.
Current UCSB faculty includes six Nobel Prize laureates, one Fields Medalist, 39 members of the National Academy of Sciences, 27 members of the National Academy of Engineering, 34 members of the American Academy of Arts and Sciences. UCSB was the No. 3 host on the ARPAnet and was elected to the Association of American Universities in 1995. The world-class faculty includes two Academy and Emmy Award winners, recipients of a Millennium Technology Prize, an IEEE Medal of Honor, a National Medal of Technology and Innovation and a Breakthrough Prize in Fundamental Physics; the UC Santa Barbara Gauchos compete in the Big West Conference of the NCAA Division I. The Gauchos have won NCAA national championships in men's water polo. UCSB traces its origins back to the Anna Blake School, founded in 1891, offered training in home economics and industrial arts; the Anna Blake School was taken over by the state in 1909 and became the Santa Barbara State Normal School, which became the Santa Barbara State College in 1921.
In 1944, intense lobbying by an interest group in the City of Santa Barbara led by Thomas Storke and Pearl Chase persuaded the State Legislature, Gov. Earl Warren, the Regents of the University of California to move the State College over to the more research-oriented University of California system; the State College system sued to stop the takeover. A state constitutional amendment was passed in 1946 to stop subsequent conversions of State Colleges to University of California campuses. From 1944 to 1958, the school was known as Santa Barbara College of the University of California, before taking on its current name; when the vacated Marine Corps training station in Goleta was purchased for the growing college, Santa Barbara City College moved into the vacated State College buildings. The regents envisioned a small, several thousand–student liberal arts college, a so-called "Williams College of the West", at Santa Barbara. Chronologically, UCSB is the third general-education campus of the University of California, after Berkeley and UCLA.
The original campus the regents acquired in Santa Barbara was located on only 100 acres of unusable land on a seaside mesa. The availability of a 400-acre portion of the land used as Marine Corps Air Station Santa Barbara until 1946 on another seaside mesa in Goleta, which the regents could acquire for free from the federal government, led to that site becoming the Santa Barbara campus in 1949. Only 3000–3500 students were anticipated, but the post-WWII baby boom led to the designation of general campus in 1958, along with a name change from "Santa Barbara College" to "University of California, Santa Barbara," and the discontinuation of the industrial arts program for which the state college was famous. A chancellor, Samuel B. Gould, was appointed in 1959. All of this change was done in accordance with the California Master Plan for Higher Education. In 1959, UCSB professor Douwe Stuurman hosted the English writer Aldous Huxley as the university's first visiting professor. Huxley delivered a lectures series called "The Human Situation".
In the late'60s and early'70s, UCSB became nationally known as a hotbed of anti–Vietnam War activity. A bombing at the school's faculty club in 1969 killed Dover Sharp. In the spring of 1970, multiple occasions of arson occurred, including a burning of the Bank of America branch building in the student community of Isla Vista, during which time one male student, Kevin Moran, was shot and killed by police. UCSB's anti-Vietnam activity impelled then-Gov. Ronald Reagan to order the National Guard to enforce it. Armed guardsmen were a common sight in Isla Vista during this time. In 1995, UCSB was elected to the Association of American Universities, an organization of leading research universities, with a membership consisting of 59 universities in the United States and two universities in Canada. On May 23, 2014, a killing spree occurred in Isla Vista, California, a community in close proximity to the campus. All six people killed during the rampage were students at UCSB; the murderer was a former Santa Barbara City College student.
1944–1946: Clarence L. Phelps 1946–1955: J. Harold Williams 1955–1955: Clark G. Kuebler 1956–1956: John C. Snidecor 1956–1959: Elmer Noble 1959–1962: Samuel B. Gould 1962–1977: Vernon Cheadle 1977–1986: Robert Huttenba
University of Illinois at Urbana–Champaign
The University of Illinois at Urbana–Champaign is a public research university in Illinois and the flagship institution of the University of Illinois System. Founded in 1867 as a land-grant institution, its campus is located in the twin cities of Champaign and Urbana; the University of Illinois at Urbana–Champaign is a member of the Association of American Universities and is classified as a R1 Doctoral Research University under the Carnegie Classification of Institutions of Higher Education, which denotes the highest research activity. In fiscal year 2017, research expenditures at Illinois totaled $642 million; the campus library system possesses the second-largest university library in the United States by holdings after Harvard University. The university hosts the National Center for Supercomputing Applications and is home to the fastest supercomputer on a university campus; the university contains 16 schools and colleges and offers more than 150 undergraduate and over 100 graduate programs of study.
The university holds 651 buildings on 6,370 acres and its annual operating budget in 2016 was over $2 billion. The University of Illinois at Urbana–Champaign operates a Research Park home to innovation centers for over 90 start-up companies and multinational corporations, including Abbott, AbbVie, Capital One, State Farm, Yahoo, among others; as of October 2018, 30 Nobel laureates, 2 Turing Award winners, 1 Fields medalist have been affiliated with the university as alumni, faculty members, or researchers. The University of Illinois named "Illinois Industrial University", was one of the 37 universities created under the first Morrill Land-Grant Act, which provided public land for the creation of agricultural and industrial colleges and universities across the United States. Among several cities, Urbana was selected in 1867 as the site for the new school. From the beginning, President John Milton Gregory's desire to establish an institution grounded in the liberal arts tradition was at odds with many state residents and lawmakers who wanted the university to offer classes based around "industrial education".
The university opened for classes on March 2, 1868, had two faculty members and 77 students. The Library, which opened with the school in 1868, started with 1,039 volumes. Subsequently, President Edmund J. James, in a speech to the board of trustees in 1912, proposed to create a research library, it is now one of the world's largest public academic collections. In 1870, the Mumford House was constructed as a model farmhouse for the school's experimental farm; the Mumford House remains the oldest structure on campus. The original University Hall was the fourth building built. In 1885, the Illinois Industrial University changed its name to the "University of Illinois", reflecting its agricultural and liberal arts curriculum. During his presidency, Edmund J. James is credited for building the foundation for the large Chinese international student population on campus. James established ties with China through the Chinese Minister to the United States Wu Ting-Fang. In addition, during James's presidency, class rivalries and Bob Zuppke's winning football teams contributed to campus morale.
Alma Mater, a prominent statue on campus created by alumnus Lorado Taft, was unveiled on June 11, 1929. It was established from donations by the Alumni Fund and the classes of 1923–1929. Like many Universities, the economic depression slowed expansion on the campus; the university replaced the original university hall with the Illini Union. After World War II, the university experienced rapid growth; the enrollment doubled and the academic standing improved. This period was marked by large growth in the Graduate College and increased federal support of scientific and technological research. During the 1950s and 1960s the university experienced the turmoil common on many American campuses. Among these were the water fights of the fifties and sixties. By 1967 the University of Illinois system consisted of a main campus in Champaign-Urbana and two Chicago campuses, Chicago Circle and Medical Center, people began using "Urbana–Champaign" or the reverse to refer to the main campus specifically; the university name changed to the "University of Illinois at Urbana–Champaign" around 1982, using the reverse of the used designation for the metropolitan area, "Champaign-Urbana".
The name change established a separate identity for the main campus within the University of Illinois system, which today includes campuses in Springfield and Chicago. In 1998, the Hallene Gateway Plaza was dedicated; the Plaza features the original sandstone portal of University Hall, the fourth building on campus. In recent years, state support has declined from 4.5% of the state's tax appropriations in 1980 to 2.28% in 2011, a nearly 50% decline. As a result, the university's budget has shifted away from relying on state support with nearly 84% of the budget now coming from other sources. On March 12, 2015, the Board of Trustees approved the creation of a medical school, being the first college created at Urbana–Champaign in over 60 years; the Carle-Illinois College of Medicine began classes in 2018. The main research and academic facilities are divided evenly between the twin cities of Urbana and Champaign, which form part of the Champaign–Urbana metropolitan area; the College of Agriculture and Environmental Sciences' research fields stretch south from Urbana and Champaign into Savoy and Champaign County.
American Physical Society
The American Physical Society is the world's second largest organization of physicists. The Society publishes more than a dozen scientific journals, including the prestigious Physical Review and Physical Review Letters, organizes more than twenty science meetings each year. APS is a member society of the American Institute of Physics; the American Physical Society was founded on May 20, 1899, when thirty-six physicists gathered at Columbia University for that purpose. They proclaimed the mission of the new Society to be "to advance and diffuse the knowledge of physics", in one way or another the APS has been at that task since. In the early years the sole activity of the APS was to hold scientific meetings four per year. In 1913, the APS took over the operation of the Physical Review, founded in 1893 at Cornell University, journal publication became its second major activity; the Physical Review was followed by Reviews of Modern Physics in 1929 and by Physical Review Letters in 1958. Over the years, Phys.
Rev. has subdivided into five separate sections as the fields of physics proliferated and the number of submissions grew. In more recent years, the activities of the Society have broadened considerably. Stimulated by the increase in Federal funding in the period after the Second World War, more by the increased public involvement of scientists in the 1960s, the APS is active in public and governmental affairs, in the international physics community. In addition, the Society conducts extensive programs in education, science outreach, media relations. APS has 11 topical groups covering all areas of physics research. There are 6 forums that reflect the interest of its 50,000 members in broader issues, 9 sections organized by geographical region. In 1999, APS Physics celebrated its centennial with the biggest-ever physics meeting in Atlanta. In 2005, APS took the lead role in United States participation in the World Year of Physics, initiating several programs to broadly publicize physics during the 100th anniversary of Albert Einstein's annus mirabilis.
Einstein@Home, one of the projects APS initiated during World Year of Physics, is an ongoing and popular distributed computing project. During the summer of 2005, the society conducted an electronic poll, in which the majority of APS members preferred the name American Physics Society; the poll became the motivation for a proposal of a name change promised in the leadership election that year. However, because of legal issues, the planned name change was abandoned by the APS Executive Board. To promote public recognition of APS as a physics society, while retaining the name American Physical Society, the APS Executive Board adopted a new logo incorporating the phrase "APS Physics." General use of APS Physics to refer to APS or the American Physical Society is encouraged. The new APS Physics logo was designed by Kerry G. Johnson. Marvin Cohen, APS President, said, "I like the logo. At least now when you are in an elevator at an APS meeting and someone looks at your badge, they won't ask you about sports."
The American Physical Society publishes 13 international research journals and an open-access on-line news and commentary website Physics. Physical Review Letters Reviews of Modern Physics Physical Review A: Atomic and optical physics. Physical Review B: Condensed matter and materials physics. Physical Review C: Nuclear physics. Physical Review D: Particles, fields and cosmology. Physical Review E: Statistical and soft matter physics. Physical Review X: Open access. Physical Review Applied: Experimental and theoretical applications of physics. Physical Review Fluids: Fluid dynamics. Physical Review Accelerators and Beams: Open access. Physical Review Physics Education Research: Open access. Physical Review Materials: A broad-scope international journal for the multidisciplinary community engaged in research on materials. All members of APS receive the monthly publication Physics Today, published by the American Institute of Physics; the Society publishes Inside Science, part of a news service launched in 1999 to place more science stories in the media.
Aimed at both introducing the public to new scientific research and at correcting public misconceptions about science, the publication has editorial independence from APS itself. The American Physical Society has 47 units that represent the wide range of interests of the physics community. Astrophysics Atomic, Molecular & Optical Physics: The objective of the division is the promotion of the fundamental research on atoms, simple molecules and light, their interactions; this is the oldest division of the American Physical Society. It was created in 1943; the division manages a number of prestigious awards for AMO scientists at various stages of their careers, such as the Davisson-Germer Prize in Atomic or Surface Physics, Rabi Prize in AMO Physics, Outstanding Doctoral Thesis Research in AMO Physics, Herbert P. Broida Prize, etc, it organizes annual DAMOP Meetings attended by many leading AMO researchers, both from the United States and abroad. Biological Physics: With over 2,000 members, the division is the second largest learned society in the world devoted to biological physics, following the Biophysical Society.
The objective of the division is the advancement and dissemination of knowledge on the broad interface of physics and biology. This includes st
European Physical Society
The European Physical Society is a non-profit organization whose purpose is to promote physics and physicists in Europe through methods such as physics outreach. Formally established in 1968, its membership includes the national physical societies of 42 countries, some 3200 individual members; the Deutsche Physikalische Gesellschaft, the world's largest organization of physicists, is a major member. One of its main activities is organizing international conferences; the EPS sponsors conferences other than the Europhysics Conference, like the International Conference of Physics Students in 2011. The scientific activities of EPS are organised through Divisions and Groups, who organise topical conferences and workshops; the Divisions and Groups are governed by boards elected from members. The current Divisions of the EPS are: Atomic and Optical Physics Division Condensed Matter Division Physics Education Division Environmental Physics Division Gravitational Physics Division High Energy & Particle Physics Division Nuclear Physics Division Division of Physics in Life Sciences Plasma Physics Division European Solar Physics Division Statistical & Nonlinear Physics DivisionAnd the current Groups of the EPS are: Accelerator Group Computational Physics Group Energy Group History of Physics Group Physics for Development Group Technology and Innovation Group The EPS awards a number of prizes, including the Edison Volta Prize, the EPS Europhysics Prize, the EPS Statistical and Nonlinear Physics Prizes and the High Energy and Particle Physics Prize.
It recognises sites which are important for advances to physics, such as the Blackett Laboratory in 2014, the Residencia de Estudiantes in 2015. Its letters journal is EPL. 2017–present: Rüdiger Voss 2015–17: C. Rossel 2013–15: John M. Dudley 2011–13: L. Cifarelli 2009–11: M. Kolwas 2007–9: F. Wagner 2005–7: O. Poulsen 2003–5: M. C. E. Huber 2001–3: M. Ducloy 1999–2001: Arnold Wolfendale 1997–99: Denis Weaire 1995–97: Herwig Schopper 1993–95: N. Kroo 1991–93: M. Jacob 1988–91: R. A. Ricci 1986–88: W. Buckel 1984–86: G. H. Stafford 1982–84: Jacques Friedel 1980–82: A. R. Mackintosh 1978–80: Antonino Zichichi 1976–78: I. Ursu 1972–76: H. B. G. Casimir 1970–72: Erik Gustav Rydberg 1968–70: G. Bernardini Official website
A semiconductor material has an electrical conductivity value falling between that of a metal, like copper, etc. and an insulator, such as glass. Their resistance decreases as their temperature increases, behaviour opposite to that of a metal, their conducting properties may be altered in useful ways by the deliberate, controlled introduction of impurities into the crystal structure. Where two differently-doped regions exist in the same crystal, a semiconductor junction is created; the behavior of charge carriers which include electrons and electron holes at these junctions is the basis of diodes and all modern electronics. Some examples of semiconductors are silicon and gallium arsenide. After silicon, gallium arsenide is the second most common semiconductor used in laser diodes, solar cells, microwave frequency integrated circuits, others. Silicon is a critical element for fabricating most electronic circuits. Semiconductor devices can display a range of useful properties such as passing current more in one direction than the other, showing variable resistance, sensitivity to light or heat.
Because the electrical properties of a semiconductor material can be modified by doping, or by the application of electrical fields or light, devices made from semiconductors can be used for amplification and energy conversion. The conductivity of silicon is increased by adding a small amount of trivalent atoms; this process is known as doping and resulting semiconductors are known as doped or extrinsic semiconductors. Apart from doping, the conductivity of a semiconductor can be improved by increasing its temperature; this is contrary to the behaviour of a metal in which conductivity decreases with increase in temperature. The modern understanding of the properties of a semiconductor relies on quantum physics to explain the movement of charge carriers in a crystal lattice. Doping increases the number of charge carriers within the crystal; when a doped semiconductor contains free holes it is called "p-type", when it contains free electrons it is known as "n-type". The semiconductor materials used in electronic devices are doped under precise conditions to control the concentration and regions of p- and n-type dopants.
A single semiconductor crystal can have many p- and n-type regions. Although some pure elements and many compounds display semiconductor properties, silicon and compounds of gallium are the most used in electronic devices. Elements near the so-called "metalloid staircase", where the metalloids are located on the periodic table, are used as semiconductors; some of the properties of semiconductor materials were observed throughout the mid 19th and first decades of the 20th century. The first practical application of semiconductors in electronics was the 1904 development of the cat's-whisker detector, a primitive semiconductor diode used in early radio receivers. Developments in quantum physics in turn allowed the development of the transistor in 1947 and the integrated circuit in 1958. Variable electrical conductivity Semiconductors in their natural state are poor conductors because a current requires the flow of electrons, semiconductors have their valence bands filled, preventing the entry flow of new electrons.
There are several developed techniques that allow semiconducting materials to behave like conducting materials, such as doping or gating. These modifications have two outcomes: p-type; these refer to the shortage of electrons, respectively. An unbalanced number of electrons would cause a current to flow through the material. Heterojunctions Heterojunctions occur when two differently doped semiconducting materials are joined together. For example, a configuration could consist of n-doped germanium; this results in an exchange of electrons and holes between the differently doped semiconducting materials. The n-doped germanium would have an excess of electrons, the p-doped germanium would have an excess of holes; the transfer occurs until equilibrium is reached by a process called recombination, which causes the migrating electrons from the n-type to come in contact with the migrating holes from the p-type. A product of this process is charged ions. Excited electrons A difference in electric potential on a semiconducting material would cause it to leave thermal equilibrium and create a non-equilibrium situation.
This introduces electrons and holes to the system, which interact via a process called ambipolar diffusion. Whenever thermal equilibrium is disturbed in a semiconducting material, the number of holes and electrons changes; such disruptions can occur as a result of a temperature difference or photons, which can enter the system and create electrons and holes. The process that creates and annihilates electrons and holes are called generation and recombination. Light emission In certain semiconductors, excited electrons can relax by emitting light instead of producing heat; these semiconductors are used in the construction of light-emitting diodes and fluorescent quantum dots. High thermal conductivitySemiconductors with high thermal conductivity can be used for heat dissipation and improving thermal management of electronics. Thermal energy conversion Semiconductors have large thermoelectric power factors making them useful in thermoelectric generators, as well as high thermoelectric figures of merit making them useful in thermoelectric coolers.
A large number of elements and compounds have semiconducting properties, including: Certain pure elements are found in Group 14 of the p
National Academy of Sciences
The National Academy of Sciences is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences and Medicine, along with the National Academy of Engineering and the National Academy of Medicine; as a national academy, new members of the organization are elected annually by current members, based on their distinguished and continuing achievements in original research. Election to the National Academy is one of the highest honors in the scientific field. Members serve pro bono as "advisers to the nation" on science and medicine; the group holds a congressional charter under Title 36 of the United States Code. Founded in 1863 as a result of an Act of Congress, approved by Abraham Lincoln, the NAS is charged with "providing independent, objective advice to the nation on matters related to science and technology. … to provide scientific advice to the government'whenever called upon' by any government department. The Academy receives no compensation from the government for its services."
As of 2016, the National Academy of Sciences includes about 2,350 members and 450 foreign associates. It employed about 1,100 staff in 2005; the current members annually elect new members for life. Up to 84 members who are US citizens are elected every year. 190 members have won a Nobel Prize. By its own admission in 1989, the addition of women to the Academy "continues at a dismal trickle", at which time there were 1,516 male members and 57 female members; the National Academy of Sciences is a member of the International Council for Science. The ICSU Advisory Committee, in the Research Council's Office of International Affairs, facilitates participation of members in international scientific unions and serves as a liaison for U. S. national committees for individual scientific unions. Although there is no formal relationship with state and local academies of science, there is informal dialogue; the National Academy is governed by a 17-member Council, made up of five officers and 12 Councilors, all of whom are elected from among the Academy membership.
About 85 percent of funding comes from the federal government through contracts and grants from agencies and 15 percent from state governments, private foundations, industrial organizations, funds provided by the Academies member organizations. The Council has the ability ad-hoc to delegate certain tasks to committees. For example, the Committee on Animal Nutrition has produced a series of Nutrient requirements of domestic animals reports since at least 1944, each one being initiated by a different sub-committee of experts in the field for example on dairy cattle; the National Academy of Sciences meets annually in Washington, D. C., documented in the Proceedings of the National Academy of Sciences, its scholarly journal. The National Academies Press is the publisher for the National Academies, makes more than 5,000 publications available on its website. From 2004 to 2017, the National Academy of Sciences administered the Marian Koshland Science Museum to provide public exhibits and programming related to its policy work.
The museum's exhibits focused on infectious disease. In 2017 the museum closed and made way for a new science outreach program called LabX; the National Academy of Sciences maintains multiple buildings around the United States. The National Academy of Sciences Building is located at 2101 Constitution Avenue, in northwest Washington, D. C.. S. State Department; the building has a neoclassical architectural style and was built by architect Bertram Grosvenor Goodhue. The building is listed on the National Register of Historic Places. Goodhue engaged a team of artists and architectural sculptors including Albert Herter, Lee Lawrie, Hildreth Meiere to design interior embellishments celebrating the history and significance of science; the building is used for lectures, symposia and concerts, in addition to annual meetings of the NAS, NAE, NAM. The 2012 Presidential Award for Math and Science Teaching ceremony was held here on March 5, 2014. 150 staff members work at the NAS Building. In June 2012, it reopened to visitors after a major two-year restoration project which restored and improved the building's historic spaces, increased accessibility, brought the building's aging infrastructure and facilities up to date.
More than 1,000 National Academies staff members work at The Keck Center of the National Academies at 500 Fifth Street in northwest Washington, D. C; the Keck Center houses the National Academies Press Bookstore. The Marian Koshland Science Museum of the National Academy of Sciences – located at 525 E St. N. W. – hosted visits from the public, school field trips, traveling exhibits, permanent science exhibits. The NAS maintains conference centers in California and Massachusetts; the Arnold and Mabel Beckman Center is located on 100 Academy Drive in Irvine, near the campus of the University of California, Irvine. The J. Erik Jonsson Conference Center located at 314 Quissett Avenue in Woods Hole, Massachusetts, is another conference facility; the Act of Incorporation, signed by President Abraham Lincoln on March 3, 1863, created the National Academy of Sciences and named 50 charter members. Many of the original NAS members came from the so-called "Scientific Lazzaroni," an informal network of phy