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685 Matching Results
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685
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Electrodynamics of superlattices with ultra-thin metal layers: quantum Landau damping and band gaps with nonzero density of states
This article develops a theory of electromagnetic transmission through dielectric-metal superlattices with ultra-thin metal films, in which electron motion in the direction perpendicular to the metal surfaces is quantized.
Date:
October 16, 2018
Creator:
Castillo-López, S. G.; Krokhin, Arkadii A.; Makarov, N. M. & Pérez-Rodríguez, F.
Object Type:
Article
System:
The UNT Digital Library
Silicon-Germanium Films Deposited by Low Frequency PE CVD: Effect of H2 and Ar Dilution
We have studied structure and electrical properties of Si{sub 1-Y}Ge{sub Y}:H films deposited by low frequency PE CVD over the entire composition range from Y=0 to Y=1. The deposition rate of the films and their structural and electrical properties were measured for various ratios of the germane/silane feed gases and with and without dilution by Ar and by H{sub 2}. Structure and composition was studied by Auger electron spectroscopy (AES), secondary ion mass spectroscopy (SIMS) and Fourier transform infrared (FTIR) spectroscopy. Surface morphology was characterized by atomic force microscopy (AFM). We found: (1) The deposition rate increased with Y maximizing at Y=1 without dilution. (2) The relative rate of Ge and Si incorporation is affected by dilution. (3) Hydrogen preferentially bonds to silicon. (4) Hydrogen content decreases for increasing Y. In addition, optical measurements showed that as Y goes for 0 to 1, the Fermi level moves from mid gap to the conduction band edge, i.e. the films become more n-type. No correlation was found between the pre-exponential and the activation energy of conductivity. The behavior of the conductivity {gamma}-factor suggests a local minimum in the density of states at E {approx} 0.33 eV for the films grown with or …
Date:
September 22, 2005
Creator:
Kosarev, A; Torres, A; Hernandez, Y; Ambrosio, R; Zuniga, C; Felter, T E et al.
Object Type:
Article
System:
The UNT Digital Library
La Prensa (San Antonio, Tex.), Vol. 10, No. 10, Ed. 1 Wednesday, February 22, 1922
Daily Spanish-language newspaper from San Antonio, Texas that includes local, state, and national news along with advertising.
Date:
February 22, 1922
Creator:
Lozano, Ignacio E.
Object Type:
Newspaper
System:
The Portal to Texas History
El Paso Morning Times (El Paso, Tex.), Vol. 31, Ed. 1 Saturday, July 22, 1911
Daily newspaper from El Paso, Texas that includes local, state and national news along with extensive advertising.
Date:
July 22, 1911
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
La Prensa (San Antonio, Tex.), Vol. 7, No. 2,116, Ed. 1 Saturday, January 22, 1921
Daily Spanish-language newspaper from San Antonio, Texas that includes local, state, and national news along with advertising.
Date:
January 22, 1921
Creator:
Lozano, Ignacio E.
Object Type:
Newspaper
System:
The Portal to Texas History
Democratic Telegraph and Texas Register (Houston, Tex.), Vol. 12, No. 8, Ed. 1, Monday, February 22, 1847
Weekly newspaper from Houston, Texas that includes local, state and national news along with extensive advertising.
Date:
February 22, 1847
Creator:
Moore, Francis, Jr.
Object Type:
Newspaper
System:
The Portal to Texas History
Palacios Beacon (Palacios, Tex.), Vol. 6, No. 21, Ed. 1 Friday, May 22, 1914
Weekly newspaper from Palacios, Texas that includes local, state, and national news along with advertising.
Date:
May 22, 1914
Creator:
Stump, D. L.
Object Type:
Newspaper
System:
The Portal to Texas History
La Prensa (San Antonio, Tex.), Vol. 6, No. 1807, Ed. 1 Thursday, January 22, 1920
Daily Spanish-language newspaper from San Antonio, Texas that includes local, state, and national news along with advertising.
Date:
January 22, 1920
Creator:
Lozano, Ignacio E.
Object Type:
Newspaper
System:
The Portal to Texas History
Mt. Pleasant Daily Times (Mount Pleasant, Tex.), Vol. 16, No. 224, Ed. 1 Friday, November 22, 1935
Daily newspaper from Mount Pleasant, Texas that includes local, state, and national news along with advertising.
Date:
November 22, 1935
Creator:
Cross, G. W.
Object Type:
Newspaper
System:
The Portal to Texas History
Gainesville Daily Register and Messenger (Gainesville, Tex.), Vol. 37, No. 269, Ed. 1 Saturday, May 22, 1920
Daily newspaper from Gainesville, Texas that includes local, state, and national news along with extensive advertising.
Date:
May 22, 1920
Creator:
Leonard, J. T.
Object Type:
Newspaper
System:
The Portal to Texas History
Diario De La Tarde (Mexico City, Mexico), Vol. 7, No. 1867, Ed. 1 Friday, November 22, 1963
Newspaper from Mexico City, Mexico that includes local, national, and international news along with advertising.
Date:
November 22, 1963
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
La Prensa (San Antonio, Tex.), Vol. 6, No. 1445, Ed. 1 Wednesday, January 22, 1919
Daily Spanish-language newspaper from San Antonio, Texas that includes local, state, and national news along with advertising.
Date:
January 22, 1919
Creator:
Lozano, Ignacio E.
Object Type:
Newspaper
System:
The Portal to Texas History
American Flag. (Matamoros, Tamaulipas, Mexico), Vol. 3, No. 218, Ed. 1 Saturday, July 22, 1848
Triweekly newspaper from United States-occupied Matamoros, Mexico that includes local and national news from the United States and Mexico, especially concerning the Mexican War. Also includes advertising.
Date:
July 22, 1848
Creator:
Fleeson, Isaac Neville & Palmer, J. R.
Object Type:
Newspaper
System:
The Portal to Texas History
Mexico-U.S. Relations: Issues for Congress
None
Date:
January 22, 2007
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
La Prensa (San Antonio, Tex.), Vol. 5, No. 1071, Ed. 1 Monday, October 22, 1917
Daily Spanish-language newspaper from San Antonio, Texas that includes local, state, and national news along with advertising.
Date:
October 22, 1917
Creator:
Lozano, Ignacio E.
Object Type:
Newspaper
System:
The Portal to Texas History
National Intelligencer. (Washington [D.C.]), Vol. 48, No. 6941, Ed. 1 Tuesday, June 22, 1847
Newspaper from Washington, District of Columbia that includes local and national news along with advertising.
Date:
June 22, 1847
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
El Paso Daily Times (El Paso, Tex.), Vol. 25, Ed. 1 Saturday, April 22, 1905
Daily newspaper from El Paso, Texas that includes local, state and national news along with extensive advertising.
Date:
April 22, 1905
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
La Prensa (San Antonio, Tex.), Vol. 8, No. 2,174, Ed. 1 Tuesday, March 22, 1921
Daily Spanish-language newspaper from San Antonio, Texas that includes local, state, and national news along with advertising.
Date:
March 22, 1921
Creator:
Lozano, Ignacio E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Daily Herald (Weatherford, Tex.), Vol. 24, No. 292, Ed. 1 Saturday, December 22, 1923
Daily newspaper from Weatherford, Texas that includes local, state and national news along with advertising.
Date:
December 22, 1923
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Daily Herald (Weatherford, Tex.), Vol. 20, No. 115, Ed. 1 Saturday, May 22, 1920
Daily newspaper from Weatherford, Texas that includes local, state and national news along with advertising.
Date:
May 22, 1920
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Northern Standard. (Clarksville, Tex.), Vol. 5, No. 39, Ed. 1, Saturday, January 22, 1848
Weekly newspaper from the Clarksville, Texas area that includes local, state and national news along with extensive advertising.
Date:
January 22, 1848
Creator:
De Morse, Charles
Object Type:
Newspaper
System:
The Portal to Texas History
El Paso Morning Times (El Paso, Tex.), Vol. 38TH YEAR, Ed. 1, Thursday, November 22, 1917
Daily newspaper from El Paso, Texas that includes local, state and national news along with extensive advertising.
Date:
November 22, 1917
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
American Flag. (Matamoros, Tamaulipas, Mexico), Vol. 2, No. 168, Ed. 1 Saturday, January 22, 1848
Triweekly newspaper from United States-occupied Matamoros, Mexico that includes local and national news from the United States and Mexico, especially concerning the Mexican War. Also includes advertising.
Date:
January 22, 1848
Creator:
Fleeson, Isaac Neville & Palmer, J. R.
Object Type:
Newspaper
System:
The Portal to Texas History
The Aline Chronoscope. (Aline, Okla.), Vol. 14, No. 21, Ed. 1 Friday, May 22, 1914
Weekly newspaper from Aline, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 22, 1914
Creator:
Timmons, S. C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History