hannibal of the east

Goodmorning Irene

I saw Wayne Gretzky in my dreams.

And a ragged mop, alone in the corner, overwhelmed
by spilt millc and frozen corn

feature present. stop. future president

thusrday

stand in line
for a lime juice cosine

wipe away the salt and the fine
written lines, stains trickling blue
out and over the edges of badges

soft wet paper bags
filled up with pepper loafs
take away all the wall space that could be used
for something else better

rock island

I'm a goin on that wide water
roam to the rock island parting
white water words
and the swift plants and birds stop, stand, and staircase

guo rogerson

clabidexterous Rex
is a bottled up pennies
worth of five and dime
at wolworths
cotten breeches
in the dam
up in the
tree

the base line is heat

A famous engineer, Buckminster Fuller, once identified the inability to prevent energy loss in mechanical systems as the foremost inhibitor of technological advancement. The limitation Fuller identified is the fundamental problem faced by micromechanical systems and nanomechanical systems (MEMS and NEMS, respectively) using resonance based detection. Micromechanical resonators are micro or nano sized structures, such as microfabricated cantilevers, plates, and rings used in many applications such as atomic force microscopy [ALBRECHT], fluidic density sensing [ENOKSSON], and bio-substance detection [BURG].

Operated at mechanical resonance, a detected shift in natural frequency is correlated to an applied force such as an acceleration or mass. Critical to the functional accuracy, efficiency, and limit of detection is a very low damping factor (δ), also known as the logarithmic decrement. Low δ results in high signal-to-noise ratio and plays an important role in defining the minimum frequency shift or force that can be resolved with a microcantilver resonator, for given cantilever dimensions and frequency [YASUMURA]. Damping in micromechanical resonators comes from a variety of sources including support loss, viscous damping, clamping losses, internal friction, and thermoelastic damping (TED). The first three mechanisms of damping are extrinsic and may be minimized via design guidelines, as detailed in the next section. Inconveniently, the last two sources are intrinsic and thus establish a damping limit.

Of the intrinsic losses, internal friction is always present and is a difficult form of damping to quantify but can be considered to come from crystallographic or surface defects and the friction at grain boundaries [YANG_2000]. Generally, the use of single-crystal materials such as quartz or semi-conductor grade single-crystal silicon, containing a low density of defects, can reduce this source of damping below that of TED. TED is caused by thermoelastic coupling of an oscillating mechanical stress field to a temperature field and is therefore of great importance for resonance based detection.

flagstones

a smithereen of peach pit
lies a wasting time in the street
front window shining in a passerby eys
fine fish gate solvents sit
in tight fit rubbish bins for flies to
grab and open the gas knobs on popeye

bubbling blistered fingers
pulled off at the stem with pliers
cooked and cooked thoroughly in the heat
of a third sun, rubbing the moons of jupiter
together over dry moss and tinder