Showing posts with label practicals. Show all posts
Showing posts with label practicals. Show all posts
Tuesday, 21 March 2017
AFMsoundscratch
Tuesday, 8 November 2016
purgingtheatmosphere
graphene growth and transfer - the clean room really is a space of
possibilities - a place for the performance of science - its all about the
surface - creating new ones and using old ones with extraordinary properties -
slippage - nonstickness - stretchiness - tension - relaxing metals at high
temperatures - inert gas as spacer - the slippage of words, the idea that atoms
have choice of where to go and always framing the science into the 'real'
world. enjoying watching the craft of nanoscience, it's hands-on-ness. thinking about the scale of the graphs when monitoring and presenting evidence and how it can alter perception.
Sunday, 6 November 2016
optimisingspace
Friday's
practical - gas absorption - appeared to involve very expensive equipment that
was very fragile. Apart from the obvious (the ability through building
metal-organic frameworks to calculate the surface area of solid matter at a
very small level) my lack of ability to engage in what was happening within the
technical and expensive grey boxes meant that I started to almost start to observe
from another part of my brain - I watched the demonstrator 'explain' some of
the overarching concepts, processes and outcomes with hand gestures - I became
mesmerised by this and an idea started to manifest itself - a thought .... would
it be possible to use the hand gestures that explain scientific theories as a
way or system to manipulate or handle the objects I am going to make?
This would enable
me to explore the relationship between a thought, a gesture and the tools used
for thinking.
The
rigorous nature of optimisation is compelling - the complex relationship
between the optimised moment and the notion of the beautiful and perfect - the
unsaid notions of beauty and perfection - what makes something perfect? - Is
there an excel spreadsheet somewhere containing the formula's that I can use to
calculate this? like the use of BET isotherm to determine the surface area of a solid?
working within
stability - the spaces that are created to work in have super restrictions. The
limitations are important to enable the focus to be on material not on the
space - this space is often noisy and needs to be made to seem quieter.
the specific
methodologies around particular science activities at this level appears to be
highly complex - just the idea of how the stages in the process were developed
- from the mixing of a particular metal and linker to the machinery created to
monitor seems both incredibly focused and random (I understand that this latter
feeling is due to my lack of knowledge). the number of options seem limitless
and possibilities are afforded by the level
of knowledge of material properties - this is the key.
and afterwards.....
searching for
the right answer which appears to be found within balance - the creation of beautiful
arcs from the data by focused reduction and data manipulating/handling.
and then again
words and their meanings became filtered - my lack of understanding meant that their
meanings were translated, changed enabling a reread/rethought.
Wednesday, 2 November 2016
chemicallogicofthemicrobialcommunity
todays practical was confocal
microscopy - looking at the microbial community - the dynamics of species and
their interrelationships - wow - my notes boil down to the idea of chemical
logic - there is a knowledge that a material has a functionality that at some
level is understood - this functionality is used or exploited to explore the
characteristics of that material or another material at a deeper (smaller)
level - knowledge is used to make more knowledge, a form of leverage. I was
struck by the mechanical nature of nature of the natural world.
seen under the microscope the
images were really physical, realisable in the mind as what Science looks like
- this was supported initially when creating the sample to observe by the use
of glass wear, filters and the pipette. I spent a lot of the time in my mind
translating the conversation into my world of cameras, focal length and aperture.
The idea of digital and optical focus, weighing up the various tools to decide
how to observe and measure - size versus detail. When using the 3D software to almost
freeze the material in time it was like diving through space - as ever the idea
of the gaps - the spaces in-between became interesting and that at the smallest
level it always looks like the largest - space and the universe.
I came away with the extraordinary
idea that one could extrapolate the symbiotic activity of algae and bacteria
towards a discussion around and within social science. The behaviour of
microbial ecology could be used as models for human systems of activity - government,
education, the organisation of any activity simple or complex - the art of logistics........
Wednesday, 19 October 2016
pipetpipetpipetpipetpipetpipetpipetpipetpipetpipetpipet
Wednesday's
practical......it's a real thing....DNA origami. It is quite possibly the most
exciting thing ever! where to start - you build a structure within a software
program and then after bringing together the material (DNA, staples, salts etc)
mixing, filtering and pipetting (lots of pipetting) - the material appears to 'slot into' or 'follow' the system you have set
up because of the inherent functionality or quality of base pairs bonding - I think I might understand self assembly!
there is a lot of measuring and cleaning involved and again you don't actually
appear to look at the thing - you look at material which informs you of the location of thing. I love this idea of evidence of activity. Onto an idea.......
first 'find out' the DNA sequence of a person and then create a structure through
DNA folding that in some way represents or symbolises that person - it could be
conceived as a form of portraiture.
and 2 lectures with 2
very different approaches to the delivery of information; the most relentlessly brutal informationally intense PowerPoint ever and a whiteboard of equations. 1 - the theory behind AFM - due to a previous practical I was actually able
to grasp what was occurring - surface morphology, issues around calibration, the problems associated
with the tip bluntness, decisions around pixel density, the creation of
clarity through both the choice of tools with which to examine specimens and image manipulation. 2 - bands and band
engineering appeared to be about determining what something (metal, semiconductors and insulators) was dependant on its atomic makeup (there was a lot
of maths - I think it was maths). That was about the level of my understanding but the language used was quite beautiful and
as ever when in the room it feels like an experience or world beyond the actual
subject or space is being describing. It reminds me of a poetry reading, the
language's meaning slips between the liminal boundaries of specific states, not
quite metaphor but defiantly transitional .
I am asked to conceive
of something dimensionless
looking for an
electron to achieve balance but
low energy states are filled
balancing always
balancing but systems are governed by symmetry
making and
filling gaps but looking for balance
representing
electrons in a solid but suspending is restricted
there are always empty
states above full ones and insulators restricting jumping
the electron
could be anywhere and everywhere
the wave
travelling moving and
unimpeded
we are converging
on one answer
is this possible?
Sunday, 16 October 2016
sciencefetish
Fridays practical, solar cell construction, was a
demonstration of the repetitive actions involved in the world of science. spin
coating.....clean, clean, dry, drop coating, spin, drop coating, spin, drop coating,
spin, drop coating, spin... the speed of which determines the curvature..... the
hand eye coordination required to undertake these tasks does not appear to be
supported by visual clues on any of the apparatus within the process. It really
does rely on practice and experience - each action supporting the development
of one's knowledge - feeling the way forward towards an understanding - a
practice.
Light transfers into power but then light is power. making modelling measuring -
more tools to enable chemists working in a physics department thinking like an
engineer. There were so many 'distractions' - or maybe they will become the
project. The main one is the paraphernalia
that enables the experiment - pipettes, lab coats, gloves, goggles, lint free
plastic paper all of which I have encountered before. But arm protectors used
in conjunction with the enclosed safe places that are glove boxes were new to
me - the fetishisation of all this is something to consider but I am wary of falling
into a science version of the archive ‘trap’ written about by Victoria Lane of
becoming ‘fascinated with what might seem to the outsider to be the esoteric
props of the archivist's trade: the white cotton gloves, the cushion........?’ The
Artist in the Archive. All this stuff. Archiving the Artist (2013).
But I was fascinated by the choreography undertaken by users
of the glove boxes and thought that it would be exciting to try and use it to
manipulate my tools for the imagination, structural bookworks.
Protecting the specimen within the experiment from us rather
than us from it is an intriguing idea - these spaces that are created where objects
are manipulated. Often within vacuums - contained, clean, dry (a non-space)
(yes I realise that it's not 'non') and within this extraordinary space specific
materials and situations are monitored - ready to be recreated, controlled to
repeat. This repeatable idea butts up neatly with the concept of 'air' being
problematic (I love that phrase) and I was reminded of Heraclitus not being able to step into
the same river twice 'No man ever steps in the same river twice,
for it's not the same river and he's not the same
man.' It appears that science is
constantly trying to create a time and space where the river is still.
Thursday, 13 October 2016
thinkingscience
For myself the learning around the NanoDTC practical's
operate in two ways - there is the 'oh now I understand the basics of nanotube
growth' it's all about metallic substrates, interacting with gases, various pressures,
temperature etc. Then there is the reflective or mirror effect - how the
exposure to new ways of thinking informs my own practice. The conversations around
the creation of material with qualities defined by a number of factors was
informative, each ingredient delivers a number of practical possibilities which
has made me think about the opportunity afforded by changing the structural
possibilities within a material to effect different stresses and tensions at a
1:1 level. These ideas will in turn enable the objects I make to have certain
parameters or physical abilities which I can then utilise. Girish Rughoobur ran
the practical and brought his own research into the discussion, this mention of
the creation of nanotubes for sensors was
informative - so that's what they're for...... but also Girish explained that their
quality/functionality was dependant on the density, size, number of walls,
length, speed of growth.........and created within pentagons which with their
non parallel sides enable little or no resonance feedback and so are useful/strong
. Other shapes are not appropriate - the
triangle has internal angles that are too acute and the circle at some scale has
an element of it that is parallel. This information is another huge idea that
I'm sure will find itself within new work at some point.
The practical's are also great fun - it's a pleasure to be putting
myself in learning situations with such open intelligent interesting people,
it's of not knowing. Ideas are firing around my head and connections between
seemingly random issues are made. In my teaching capacity I find myself at the
front, in theory leading and the expectation is of having answers but for me
it's always about trying find opportunities to learn and develop collaborative
ways of thinking even with my undergraduate students who have much to teach me.
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