Facilities
Astrophysics
Survey Facility
The facility duplicates the Sloan Digital Sky Survey data locally. Facilities
include SGI and Linux workstations and a multi-TB database server, with latest
object-oriented database management and query software.
Numerical Astrophysics Facility
Emphasis is on cosmology, matter distribution in the universe, gravitational
lensing, and globular cluster modeling. Sloan Digital Sky Survey data are
analyzed locally on a compute/data center with a large-RAID-array disk farm.
The group also uses the 96-CPU Beowulf system as described below. The globular
cluster modeling is performed on GRAPE board (the fastest computer in the
world) connected to a dual AMD front-end server harboring a large-RAID-array
disk farm. Facilities also include a variety of Linux workstations, with
fast access to National Supercomputer Clusters.
Observatory
A 16-inch Meade telescope is the key feature of
the newly revamped Joseph Lynch Observatory on campus.
Students use the observatory for coursework, independent observation
projects,
and
hardware
development.
Biophysics Laser Laboratory
Research is focused on the development of pulsed
laser instrumentation systems and their application to the measurement
of time-dependent biophysical and biochemical processes. Laser photolysis
of caged-ATP, caged-Ca2+, caged protons and caged neurotransmitters
have been used in the study of the molecular mechanisms of
muscle contraction, neuron communication and proton-dependent biochemical
and biophysical processes. Facilities include frequency-doubled ruby,
neodymium-glass, liquid dye, solid-state
holmium-YLF
and erbium-glass
lasers.
Protein Self-Assembly Laboratories
Four fully computer interfaced optical tables are available with argon-ion
lasers and microscope optics to study the dynamics of protein self assembly.
One apparatus uses multiple images to study stochastic nucleation. A
second apparatus uses a spatial light modulator to produce complex images
and test the adaptability and flexibility of fibers, as well as providing
multiple optical tweezers. A third apparatus uses high speed, high resolution
particle-tracking to determine the viscoelastic properties of domains
of polymers. A fourth apparatus uses amplitude modulated light to measure
the rates of rebinding of ligands to hemoglobin. Supporting equipment
includes thin-film reflectivity and absorbance measurements for sample
characterization.
Protein Dynamics Laboratory
This laboratory is dedicated to the study of the
structure and mechanical properties of proteins. An Atomic Force Microscope
(AFM) is used to mechanically stretch individual proteins and measure
the force and ensuing changes in conformations. The laboratory is fully
equipped with ancillary equipment to prepare and manipulate samples.
Preparative Facilities
for Biophysical Experiments
This general-use facility includes a cold chamber,
Beckman centrifuge, Mettler balance, fume hood, large nitrogen glove
box, phase-contrast microscope, digital pH meter, and a Hewlett-Packard
diode spectrophotometer interfaced to a personal computer.
Nano-bio-optics
Fiber-optical nanoprobes are being developed for intracellular
measurements of biochemical processes. These probes are based on silver
or gold-coated conically tapered optical fibers with typical distal end
diometers of 20-30 nm. The biomolecules are identified by their characteristic
surface enhanced Raman (SER) spectra.
Computational Biophysics Laboratory
A
2 processor, 2 gigabyte Sun Blade 2000 running Solaris for both numerical
work and for 3D visualization, and a Sun V880, a 4 processor, 8 gigabyte
SMP machine with a terabyte of fiber based storage are available
for biophysics simulations and visualization. In addition, a Linux-based
Beowulf Cluster which currently consists of 44 dual processor nodes,
each of which are dual Xeon 2.66 GHz chips connected with a gigabit ethernet.
The master node as about a 1/2 terabyte of storage space and 2 gigs
of ram, while each of the the client nodes an 80 gigabyte drive
and 1 gigabyte of RAM.
Magnetic Materials
and Thin-Film Laboratory
Research is being conducted on amorphous magnetic
thin films, fiber optical sensors, and high-T superconductors. Facilities
include a Varian X-band ESR spectrometer, vibrating sample magnetometer,
Kerr-effect magnetometer, Mössbauer spectrometer, AC-susceptometer, and a variety of thin-film deposition
apparatus using techniques including thermal evaporation, E-beam evaporation,
and RF- and DC-triode magnetron sputtering.
Ultra-Low Temperature Physics and Nanoscience Laboratory
Research is conducted on the behavior
of matter in the micro- to nano scale length scales and at low to ultra-low
(near absolute zero) temperatures. This facility includes a helium
dilution refrigerator (with a base temperature of 10mK), helium-3 and
helium-4 cryostats and two RF SQUIDS.
Particle Physics Detector
Development Laboratory
This facility provides experimental support for
a research program in non-accelerator particle and nuclear physics,
performing tests of invariance principles and conservation laws and
searches for neutrino oscillation and high-energy neutrinos. Facilities
include modern data acquisition electronics, including numerous CAMAC
and NIM modules, various photomultiplier tubes, oscilloscopes, pulse
height analyzers, a pulsed tunable dye-laser, a high-sensitivity long-path
spectro-photometer, and a 600-liter liquid scintillation test tank.
Surface Science Laboratory
Emphasis is on studies to relate static structure
and dynamic processes at solid surfaces and interfaces at the atomic
level. Facilities include a scanning tunneling microscope, an Atomic
Force Microscope, and a surface analysis system for ultraviolet photoemission
spectroscopy.
Laboratory for High-Performance
Computational Physics
This undergraduate and graduate teaching facility
also provides support for various numerically intensive research projects.
Facilities include a dual Xeon server
and 15 independent Pentium workstations all running Linux, configured
in
a
subnet and
having full network access.
Drexel Beowulf Parallel
Computers
Three clusters of off-the-shelf computers act as
a parallel computer. The first cluster encompasses 32 dual–Pentium
III
450-MHz CPUs, with 512 (256) megabytes of RAM and a 40-GB local disk,
connected via a fast-Ethernet switch; this cluster is used for nuclear
physics, biophysics, and nonlinear dynamics studies.
The second cluster is a
new server to support astrophysics research. It consists of 48 dual
AMD CPUs, with 48 gigabytes of RAM and large local disks. The cluster
is linked via two switched fast-Ethernet networks working in parallel.
The third cluster is the 88 Xeon processor system described above in the Computational
Biophysics Laboratory.
General Facilities
The College of Arts and Sciences shops provide facilities
for custom design and fabrication of electronics and computer components
and glassware.
|