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{{Image|Brews med.jpg|right|250px|JR Brews}}
==Who am I?==
I am a Professor Emeritus of Electrical Engineering from The University of Arizona, where I taught device physics and circuit design for just under two decades. Previously, I was a research scientist for twenty-odd years at Bell Laboratories, Murray Hill, doing theoretical work in the areas of solid-state physics and device physics. I also am a Fellow of the IEEE, and a recipient of the Electron Device Society distinguished service award for work as Editor-in-chief of the journal IEEE Electron Device Letters, founded by Nobel prize winner [http://nobelprize.org/nobel_prizes/physics/laureates/2009/smith.html George E. Smith]. I've published a number of technical books and papers, some of which may be found at [http://scholar.google.com/scholar?as_q=&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=any&as_sauthors=%22J+R+Brews%22&as_publication=&as_ylo=&as_yhi=&as_sdt=1.&as_sdtp=on&as_sdts=29&hl=en this link].
==Images==
*[[User:John R. Brews/Miscellaneous|''Miscellaneous'']]
*[[User:John R. Brews/Circuits|''Circuits'']]
*[[User:John R. Brews/Chemistry|''Chemistry'']]
*[[User:John R. Brews/Devices|''Devices'']]
*[[User:John R. Brews/Electromagnetism|''Electromagnetism'']]
*[[User:John R. Brews/Forces|''Forces'']]
*[[User:John R. Brews/Logic|''Logic'']]
*[[User:John R. Brews/Magnetism|''Magnetism'']]
*[[User:John R. Brews/Photos|''Photos'']]
*[[User:John R. Brews/Medical|''Medical'']]
*[[User:John R. Brews/Music|''Music'']]
==Articles==
*[[User:John R. Brews/Articles|'''Articles''']]
==Scratch pads==
*[[User:John R. Brews/Reality]]
*[[User:John R. Brews/CZ psychology authors|CZ psychology authors]]
*[[User:John R. Brews/Sandbox|'''My Sandbox''']]
*[[User:John R. Brews/Sandbox|'''My Sandbox''']]
*[[User:John_R._Brews/Draft|'''Draft article''']]
*[[User:John_R._Brews/Draft|'''Draft article''']]
*[[User:John R. Brews/Sample|'''Sample''']]
*[[User:John R. Brews/Sample|'''Sample''']]
*[[User:John R. Brews/Sample2|'''Sample2''']]
*[[User:John R. Brews/WP Import|'''WP Import''']]
*[[User:John R. Brews/WP Import|'''WP Import''']]
*[[User:John_R._Brews/Centrifugal force|'''Centrifugal force''']]
*[[User:John_R._Brews/Coriolis_force|''Coriolis'']]
*[[User:John_R._Brews/Centripetal force|'''Centripetal force''']]
*[[User:John R. Brews/monobook.js|Java script]]
 
*[[User:John R. Brews/Removal template]]
I am a Professor Emeritus of Electrical Engineering from The University of Arizona, where I taught device physics and circuit design for just under two decades. Previously, I was a research scientist for twenty-odd years at Bell Laboratories, Murray Hill, doing theoretical work in the areas of solid-state physics and device physics. I also am a Fellow of the IEEE, and a recipient of the Electron Device Society distinguished service award for work as Editor-in-chief of the journal IEEE Electron Device Letters, founded by Nobel prize winner George E. Smith. I've published a number of technical books and papers, some of which may be found at [http://scholar.google.com/scholar?as_q=&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=any&as_sauthors=%22J+R+Brews%22&as_publication=&as_ylo=&as_yhi=&as_sdt=1.&as_sdtp=on&as_sdts=29&hl=en this link].


[[Category:CZ Authors|Brews, John R.]][[Category:Astronomy Authors|Brews, John R.]] [[Category:Earth Sciences Authors|Brews, John R.]] [[Category:Engineering Authors|Brews, John R.]] [[Category:Mathematics Authors|Brews, John R.]] [[Category:Physics Authors|Brews, John R.]]  
[[Category:CZ Authors|Brews, John R.]][[Category:Astronomy Authors|Brews, John R.]] [[Category:Earth Sciences Authors|Brews, John R.]] [[Category:Engineering Authors|Brews, John R.]] [[Category:Mathematics Authors|Brews, John R.]] [[Category:Physics Authors|Brews, John R.]] [[Category:CZ Management Council|Brews, John R.]]  
{{DEFAULTSORT:Brews, John R.}}
{{DEFAULTSORT:Brews, John R.}}
==Images==
{{Gallery-mixed
|caption=Magnetism
|width=200
|lines=3
|Magnetized sphere.PNG|'''B'''-field lines near uniformly magnetized sphere
|Hysteresis loops.PNG|Magnetic flux density ''vs.'' magnetic field in steel and iron
}}
{{Gallery-mixed
|caption=Widlar current source
|width=200
|lines=3
|Widlar Current Source.PNG|Widlar current source using bipolar transistors
|Widlar small-signal.PNG|Small-signal circuit for finding output resistance of the Widlar source
|Widlar Resistance Plot.PNG|Design trade-off between output resistance and output current in Widlar source
}}
{{Gallery-mixed
|caption=Forces
|width=200
|lines=3
|Force and couple.PNG|Force and its equivalent force and couple
|Centripetal force in circular motion.PNG|Centripetal force '''''F<sub>C</sub>''''' upon an object held in circular motion by a string of length ''R''. The string is under tension '''''F<sub>T</sub>''''', as shown separately to the left.
|Ball on banked turn.PNG|Upper panel: Ball on a banked circular track moving with constant speed ''v''; Lower panel: Forces on the ball.
|Polar unit vectors.PNG|Polar unit vectors at two times ''t'' and ''t'' + ''dt'' for a particle with trajectory '''r''' ( ''t'' ); on the left the unit vectors '''u'''<sub>ρ</sub> and '''u'''<sub>θ</sub> at the two times are moved so their tails all meet, and are shown to trace an arc of a unit radius circle.
|Local unit vectors.PNG|Local coordinate system for planar motion on a curve.
}}
{{Gallery-mixed
|caption=Electromagnetism
|width=200
|lines=3
|Motor.PNG|Electric motor using a current loop in a [[magnetic induction|magnetic flux density]], labeled '''''B'''''
}}
{{Gallery-mixed
|caption=Devices
|width=200
|lines=5
|MOS Capacitor.PNG|Cross section of MOS capacitor showing charge layers
|MOS CV curves.PNG|Three types of MOS capacitance ''vs.'' voltage curves. ''V<sub>TH</sub>''&nbsp;<nowiki>=</nowiki>&nbsp;threshold, ''V<sub>FB</sub>''&nbsp;<nowiki>=</nowiki>&nbsp;flatbands&nbsp;
|MOS equivqlent circuit.PNG|Small-signal equivalent circuit of the MOS capacitor in inversion with a single trap level
|MOSFET junction structure.PNG|A modern MOSFET
|UMOSFET.PNG|A power MOSFET; source and body share a contact.
|Silicon density of states.PNG|Calculated density of states for crystalline silicon.
|Seimiconductor band bending.PNG|''Field effect'': At a gate voltage above threshold a surface inversion layer of electrons forms at a semiconductor surface.
|Fermi levels.PNG|Occupancy comparison between n-type, intrinsic and p-type semiconductors.
|Nonideal diode current-voltage behavior.PNG|Nonideal ''pn''-diode current-voltage characteristics
|Pn-junction zero bias.PNG|Band-bending diagram for ''pn''-junction diode at zero applied voltage
|Pn-junction reverse bias.PNG|Band-bending for ''pn''-diode in reverse bias
|Quasi-Fermi levels.PNG|Quasi-Fermi levels in reverse-biased ''pn''-junction diode
|Pn-junction forward bias.PNG|Band-bending diagram for pn-diode in forward bias
|Fermi function.PNG|Fermi occupancy function ''vs''. energy departure from Fermi level in volts for three temperatures
|FCC Fermi surface.PNG|Fermi surface in '''k'''-space for a nearly filled band in the face-centered cubic lattice
|Silicon conduction band ellipsoids.JPG|A constant energy surface in the silicon conduction band consists of six ellipsoids.
|Planar Schottky diode.PNG|Planar Schottky diode with ''n<sup>+</sup>''-guard rings and tapered oxide.
|Schottky & pn diode IV curves.PNG|Comparison of Schottky and ''pn''-diode current voltage curves.
|Schottky barrier height.PNG|Schottky barrier formation on ''p''-type semiconductor. Energies are in eV.
|Schottky barrier (forward bias).PNG|Schottky diode under forward bias ''V<sub>F</sub>''.
|Schottky barrier (reverse bias).PNG|Schottky diode under reverse bias ''V<sub>R</sub>''.
|Breakdown field vs bandgap.PNG|Critical electric field for breakdown ''versus'' bandgap energy in several materials.
|Schottky barrier vs. electronegativity.PNG|Schottky barrier height ''vs.'' metal electronegativity for some selected metals on ''n''-type silicon.
}}

Latest revision as of 04:06, 22 November 2023


The account of this former contributor was not re-activated after the server upgrade of March 2022.


© Image: John R. Brews
JR Brews

Who am I?

I am a Professor Emeritus of Electrical Engineering from The University of Arizona, where I taught device physics and circuit design for just under two decades. Previously, I was a research scientist for twenty-odd years at Bell Laboratories, Murray Hill, doing theoretical work in the areas of solid-state physics and device physics. I also am a Fellow of the IEEE, and a recipient of the Electron Device Society distinguished service award for work as Editor-in-chief of the journal IEEE Electron Device Letters, founded by Nobel prize winner George E. Smith. I've published a number of technical books and papers, some of which may be found at this link.

Images

Articles

Scratch pads

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