| 0:00:07 | hello everyone |
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| 0:00:08 | here western i do research in chemistry geared towards making water repellent surfaces know what |
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| 0:00:13 | repellent is a widely utilized phenomenon especially in hospitals to kill bacteria but it's also |
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| 0:00:18 | used for more mundane things like protecting your kitchen counter |
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| 0:00:21 | my job as a chemist is to design new materials to make to become more |
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| 0:00:25 | repellent to do this i must do three things i must first synthesized make new |
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| 0:00:30 | materials capable of this task i must deposited onto a circus in finally test its |
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| 0:00:35 | properties let me tell you story of how i do this in the lap |
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| 0:00:38 | we first start off with synthesis making new components to really understand chemistry on a |
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| 0:00:43 | fundamental level you have to look at it as if it architecture chemistry its architecture |
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| 0:00:48 | of the small we build design and manipulate things and such small scales that we |
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| 0:00:52 | cannot see "'em" with our eyes |
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| 0:00:54 | architects have blueprints for their buildings and structures can is also have blueprints for their |
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| 0:00:59 | chemical structures or molecule seen at the top diagram |
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| 0:01:02 | sometimes making these chemical structures can be a bit of a daunting task as are |
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| 0:01:05 | starting materials what actually ignite before your eyes upon contact with air |
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| 0:01:09 | an example of this is fostering gasped each three an example of that can be |
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| 0:01:13 | seen at the top right |
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| 0:01:15 | well but with a bit of training in some unintentional fires we can get over |
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| 0:01:18 | this task |
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| 0:01:20 | we can look at this chemical structure just like an architect looked at their blueprints |
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| 0:01:23 | everything has a purpose |
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| 0:01:25 | so the green components in part the watercolour properties that i'm interested in the black |
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| 0:01:30 | component acts as a scaffold holding everything together and the blue component acts as the |
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| 0:01:35 | glue and this leading to the next step that is the deposition this blue component |
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| 0:01:39 | when exposed ultraviolet light from an instrument that we use in our lab from you |
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| 0:01:43 | as you can see in the bottom right |
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| 0:01:45 | it will undergo a chemical reaction in mobilising it directly onto the surface that we |
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| 0:01:49 | are interested in is at this point to be contested properties |
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| 0:01:52 | is a watercolour how water account is it |
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| 0:01:55 | but it only one things come full circle do i get excited that my research |
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| 0:01:58 | you can share with you a bit of my philosophy |
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| 0:02:00 | how is it possible that something we can see with a rise such as moderate |
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| 0:02:04 | health services manifest itself from something we can not see a chemical structure what is |
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| 0:02:09 | it about fundamental nature at such a small-scale its composition in architecture that are rises |
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| 0:02:14 | to such a phenomenon these are the data collection to keep you have an i |
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| 0:02:18 | but nonetheless |
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| 0:02:19 | but we what we figure this out is by making many different chemical structures with |
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| 0:02:23 | a different architectures are compositions we change a little bit maybe the watercolour component the |
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| 0:02:29 | scuffle and we observe the change in the properties that results from that this is |
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| 0:02:33 | called a structure property relationship |
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| 0:02:35 | and by doing this as chemists can understand the world around us we can connect |
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| 0:02:39 | the scene to the unseen were able to kill bacteria on surfaces and of course |
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| 0:02:43 | protector kitchen counters thank you |
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