Scientist Emeritus, The
University of Kansas
Director Emeritus, The University of Kansas
Kenneth Ratzlaff is retired from the
University of Kansas where he was Director of the Instrumentation Design
Laboratory with the rank of Senior Scientist.
joined The University of Kansas in 1981 as Associate Scientist and Director of
the Instrumentation Design Laboratory (IDL).
He was promoted to Senior Scientist in 1987.
In 1985, he was elected chair of the Computers in Chemistry division of the American Chemical
The Instrumentation Design
Laboratory designs and builds special-purpose scientific instrumentation in
collaboration with researchers. Most projects involve electronics and small or
embedded computers or field-programmable gate arrays (FPGAs).
As Director of
the IDL, he has been part of a very diverse
array of projects including:
● astro-particle detectors at the South
Pole (where he made four deployment trips), on an Antarctic ice shelf, in a balloon over Antarctica, in Utah, and
● an array of equipment for
FermiLab and CERN,
● various behaviour-tracking
devices for fruit flies, fireflies, mice, rats,
legless lizards and more,
● high-speed laser control,
● solid-state nmr
● collision-avoidance radar and other devices for aeronautics.
● detection and control devices for microchips in chemistry,
● remote power systems
(photovoltaic/wind) in extreme environments including the Antarctic plateau.
Ken has taught short courses in this country and abroad and a graduate lab course in laboratory electronics and
computers. He helped team-teach a project-based
electronics course in Physics.
Ken came to KU from Northern Illinois University where he was
an Associate Professor of Analytical Chemistry. Earlier, from 1969-1973, he taught science and math at Moeding College in the Republic of Botswana.
In 1967, he
earned his B.A. in Chemistry at Tabor College, followed by an M.S. at the
University of Illinois in 1969. After returning from Botswana, he received his
Ph.D. in Analytical Chemistry at the University of Illinois in 1975. Besides over 50
papers and intellectual property, he is author of a book on laboratory
computers, editor of a book on imaging detectors, and contributor to several
books on computers in science.
Assessment of Precision in Dual Wavelength Spectrophotometric
Measurement," Anal. Chem., 49, 2170 (1977) (with D.F.S. Natusch).
in Minicomputer Applications," Am. Lab., 10 (2), 17 (1978).
Dual Wavelength Spectrophotometer," Anal. Chem. 50, 1799 (1978) (with
F. Chuang, D. Natusch, K. O'Keefe).
Precision in Standard Addition Measurement," Anal. Chem., 51, 232
of Precision in Dual Wavelength Spectrophotometric Measurement,"
Anal. Chem., 51, 256 (1979) (with H. b. Darus).
of a Charge-Coupled Device Photoarray as a
Molecular Absorption Spectrophotometric Detector," Appl. Spectrosc., 33, 240 (1979) (with S.L. Paul).
Assessment of Accuracy in Dual Wavelength Spectrophotometric
Measurement," Anal. Chem., 51, 1209 (1979) (with D. Natusch).
Based on a Charge-Coupled Device Photoarray
Detector," Anal. Chem., 52, 916 (1980).
Parameter Estimation in Rapid-Scan Spectrophotometry," Anal. Chem.,
52, 1415 (1980).
- "The Use of
Computer-Assisted Instruction in the Teaching Laboratory," J. Chem.
Ed., 57, 1207 (1980) (with S. Engh).
Microcomputers: A Guide to the Scientific User of S-100, TRS-80, PET, and
Apple Microcomputers," J. Chem. Ed., 58, 503 (1981).
- "Laser Beam
Spatial Profile Analysis Using a Two-Dimensional Photodiode Array,"
Rev. Sci. Instrum., 54, 856 (1983) (with T. K.
Dedicated Instrument Controllers using Personal Computers as
Platforms," Analyt. Instrum.,
17, 225 (1988) (with T. Peters and D. Schloemer).
Time-resolved Laser Spectrometer with Expanded Delay Range," Rev.
Sci. Instrum., 59, 2375 (1988) (with J. Bostick,
C. Johnson, S. Mounter, D. Schloemer).
Determination of Transition Metal Ions by Chemiluminescence Detected with
a Charge-Coupled Device," Proceedings of the Society for
Photo-Optical Instrumentation Engineers, 1055, 123-34 (1989) (with R. Jalkian and M. Denton).
- "Computation of
Two-Dimensional Polynomial Least-Squares Convolution Integers," Anal.
Chem., 61, 1303 (1989) (with J. Johnson).
Chromatography Diskette' Storage of High Performance
Liquid Chromatographic Effluents with Off-Line Laser-Induced Fluorescence
Detection," Anal. Sciences, 6, 121-129 (1990) (with J. Strojek, S.
Soper, T. Kuwana).
Resonance Raman Spectroscopy of Liquid Chromatographic Analytes on
Thin-Layer Chromatographic Plates," Anal. Chem., 62, 1438 (1990)
(with S. Soper, T. Kuwana).
- "Detektory Typu ,Charge-Couple' W Nowoczesnych
(Charge-Coupled Device Photometric Detectors in Modern Analytical
Measurements), Wiad. Chem., 44, 551 (1990).
- "Development of
a Fourier Transform NMR Instrument Simulator," J. Chem. Inf. Comput. Sci., 33, 303 (1993) (with D. Vandervelde).
- "A compact
hot-nozzle Fourier-transform microwave spectrometer," Rev. Sci. Instrum., 66, 5196 (1995) (with M. Harmony, K. Beran, D. Angst).
- “An automated
tracer dispersal system for snow accumulation and saltation transport
investigations,” Rev. Sci. Instrum.,
69(2), 572 577 (1998) (with D. Braaten).
inexpensive, semi-automated system for measuring mechanical properties of
soft tissues,” J Exp Zool, 284(4), 374-8
(1999) (with D. E. Alexander, R. J. Roggero, and J. S. Hsieh.)
- "The Inebri-Actometer: A Device for Measuring the Locomotor
Activity of Drosophila Exposed to Ethanol Vapor,” Journal of
Neuroscience Methods, 107, 93-99 (2001) (with J. Parr, A. Large, X. Wang,
S.C. Fowler, D.M. Ruden.)
Electrochemical Detection for Microchip Capillary Electrophoresis Using an
Electrically isolated Potentiostat”, Anal.
Chem., 74 (5), 1136 -1143, (2002) (with R. Scott Martin, Bryan H. Huynh,
Susan M. Lunte.
- "RICE limits on
the diffuse ultrahigh energy neutrino flux”, Phys. Rev. D, 73, 82002
(2006) (with I Kravchenko and co-workers).
Limits on the Ultra-High Energy (UHE) Neutrino Flux from the RICE
Experiment”, 29th International Cosmic Ray Conference Pune, 5,
123-126 (2005) (with I. Kravchenko and co-workers).
Reconstruction and Data Acquisition for the RICE Experiment at the South
(31 May 2007) (with I Kravchenko and co-workers).
Inexpensive Infrared Detector to Verify the Delivery of Food
Pellets,” Journal of the Experimental Analysis of Behavior, 90(2),
249-255, (2008) (with J. W. Pinkston, G.J. Madden and S.C. Fowler).
- “An efficient
and inexpensive refrigerated LC system for H/D exchange mass
spectrometry”, JASMS, 22(8), 1472-6, 2011 (with T. R. Keppel, M. E.
Jacques, R.W. Young, and D. D. Weis).
- “Design and
Initial Performance of the Askaryan Radio Array
Prototype eeV Neutrino Detector at the South
Pole”, Astropart. Phys, 35, 457-477, 2012
(with the ARA Collaboration).
results from the RICE experiment and future prospects for ultra-high
energy neutrino detection at the south pole,” Physical Review D
– Particles, Fields, Gravitation and Cosmology, 85(6), 062004, 2012
(with I. Kravchenko and co-workers.)
- “Design and
Deployment of the Askaryan Radio Array South
Pole Autonomous Renewable Power Stations,” RE&PQJ, X(11), 2013 (with D. Besson, D. Kennedy, R. Young).
Modeling and Testing of the Askaryan Radio Array
South Pole Autonomous Renewable Power Stations,” Nucl.
Instrum. Meth., A763, 521-532, 2014, (with D.
Besson, D. Kennedy, R. Young)
- “Searching for
Cosmic Ray Radar Echoes in TARA Data”, 33rd International Cosmic Ray
Conference, July, 2013 (with Othman, M. Abou Bakr and the TARA Collaboration.)
Radar Detection of the UHECR with TARA,” 33rd International Cosmic
Ray Conference, July, 2013 (with the TARA collaboration.)
response of the ARIANNA detector”, Astropart.
Phys, 62, 139-151, 2015 (with the ARIANNA collaboration.)
- “Design and
Performance of the ARIANNA Hexagonal Radio Array Systems”, IEEE
Transactions on Nuclear Science, 60(2), 612-618, 2013 (with the ARIANNA
Array Radar (TARA) Observatory for Ultra-High Energy Cosmic Rays,” Nucl. Instrum. Meth. A, 767,
322-338, 2014 (with the TARA collaboration.)
- “A First
Search for Cosmogenic Neutrinos with the ARIANNA Hexagonal Radio
Array,” Astropart. Phys., 70, 12-26, 2015
(with the ARIANNA collaboration.)
Construction and Operation of a Low-Power, Autonomous Radio-Frequency
Data-Acquisition Station for the TARA Experiment,” Nucl. Instrum. Meth. A797,
110-120, 2015. (with the TARA collaboration.)
- "Design and Performance of the
ARIANNA HRA-3 Neutrino Detector Systems,” IEEE Trans. Nuclear
Science, 62(5), 2202-2215, 2015 (with the ARIANNA collaboration.)
constraints on the ultra-high energy neutrino flux from a prototype
station of the Askaryan Radio Array,” Astropart. Phys., 70, 62-80, 2015 (with the ARA
- “The Askaryan radio array,” AIP Conference
Proceedings, 1535(1), 15, 2016 (with the ARA collaboration.).
of two Askaryan Radio Array stations and first
results in the search for ultra-high energy neutrinos,” Physical
Review D, 93, 082003-1 – 082003-26, 2016 (with the ARA
Surface Reflectivity Measurements from the ANITA-3 and HiCal-1
Experiments,” Journal of Astronomical Instrumentation, 6.2, 2017
(with the ANITA collaboration.)
on the Ultra-High Energy Neutrino Flux from the Gamma-Ray Bursts from a
Prototype Station of the Askaryan Radio
Array,” Astropart. Phys., 88, 7-16, 2017
(with the ARA collaboration).
surface reflectivity calculations and measurements from the ANITA-4 and
HiCal-2 Experiments," Physical Review D, 98, 042004, 2018, (with S. Prohira and the ANITA Collaboration.)
of a custom time-domain firmware trigger for RADAR-based cosmic ray
detection," Nuclear Inst. and Methods in Physics Research, A890,
126-132, 2018 (with S. Prohira, D. Besson, S.
Kunwar, and R. Young.)
- "HiCal 2: An instrument designed for calibration of the
ANITA experiment and for antarctic surface
reflectivity measurements," Nuclear Inst. and Methods in Physics
Research, A918, 60-66, 2019 (with S. Prohira and
the ANITA collaboration.)
- “Design and performance of an
interferometric trigger array for radio detection of high-energy
neutrinos,” Nuclear Instruments and Methods in Physics Research Section A:
Accelerators, Spectrometers, Detectors and Associated Equipment, A930, 112-125, 2019 (with the ARA
of the real dielectric permittivity ϵr of glacial ice,” Astroparticle Physics,
63-73, 2019. (with the ARA collaboration.)
- “HiCal 2: An instrument designed for calibration of the
ANITA experiment and for Antarctic surface reflectivity
measurements,” Nuclear Instruments and Methods in Physics Research Section A:
Accelerators, Spectrometers, Detectors and Associated Equipment, 918,
60-66, 2019. (with S. Prohira and the ANITA
Approaches, and Capabilities of Laboratory Computers," in The Laboratory Computer Coursebook and
Catalog, American Chemical Society Chicago Section, 1981.
Science and the New Small Computer," in Computer Education of Chemists, P. Lykos, Ed., Wiley, New
Spectrophotometry," in Spectroscopic
Methods of Analysis for Molecules, G. Christian and J. Callis, eds.,
J. Wiley, New York, 1986.
- An Introduction to Computer-Assisted
Experimentation, Wiley-Interscience: New York, January, 1987.
- "The Role of
the Microcomputer," in Practical
Guide to Chemometrics, S. J. Haswell, ed., Dekker, 1992 (with E. H.
Devices in Spectroscopy, VCH: New York, 1995. (co-edited with Jonathan
Sweedler and M. Bonner Denton).
Interfacing," in What Every
Chemist Should Know About Computing, T. Zielinski and May Swift, eds.,
ACS Press: Washington, D.C., 1997.
System for Personal Computers,” 1999 with Ricardo Roggero and
- “Personal Data
Recorder,” 2003 with Troy Zarcone and Alan Hase.
Supply/Electrochemical Detection System for Capillary Electrophoresis on a
Chip,” 2003 with John P. Ledford.
- “Spin Control
System for Solid State NMR,” 2008 with Robert W. Young. (In
production for Revolution NMR.)
Mouse Force Tracker,” 2011 with Robert W. Young, Stephen C. Fowler
and George R. Fullen. US Patent 9,408,372 granted August 9, 2016.