So I was doing a Ph.D. on #CarbonNanotubes

What did that mean? ☑️
What came next? ❓
#CarbonNanotubes (CNTs) are super cool materials – they’re basically a sheet of graphite (graphene) ✏️rolled up tightly into a tube.

In the same way as rolling a sheet of paper makes it harder to bend, rolling up graphite makes it much stronger too 💪💪.
Unlike rolling a piece of paper, which is still a piece of paper that isn’t conductive🤦

CNTs are much more conductive that graphene – up to ‘ballistic conductance’ ⏩⏩which sounds super cool but just means conductivity is independent of length (ok – that’s still super cool).
This happens because the electron orbitals on each atom are deformed by the CNT being rolled up – so they overlap a bit more.

This concept is pretty simple, but really defines what I try to do in my research – control the form of a material to manipulate its function! 🗞️⚡️☑️
As CNTs are strong and electrically conductive (and chemically stable) – as well as made from one of the most abundant and well understood elements on earth (carbon) 💎 – they are great for energy storage 🔋devices!

#Supercapacitors
#FuelCells

More on this tomorrow!
I ended up completing my Ph.D. in August of 2012 – after starting in 2008, so 4.5 years doesn’t seem too long.
The Australian Ph.D. award system is slightly different, in part due to isolation. 🏝️

The thesis is sent away for review with no fixed date it’s coming back – most come back in 3 months. 📔

Mine took over 12 – simply because the reviewer was sick. 🤦
This was a bit of a boon and a curse

A boon: it extender the start of my ‘ECR’ period – the time given to you to establish yourself (or not) as a researcher ☑️

A curse: it was a massive detriment to my mental health.🙊
This time also let me explore collaborations visiting @UCLA and learning all about 2D materials – which is what I focus on nowadays - and led to some of the work I was most proud of 😃 – figuring out how to control nerve cell growth with graphene.
There isn’t a resolution, or ‘point’ to me mentioning this – just that everyone goes through struggles and destigmatizing it is important.

Some things are just out of your control.
Still there were lots of positives

During my Ph.D. I met my wife ( @DrTinyTaps) – you should check out her research into tissue engineering, it’s super cool! 🆒

However, find a post-doc for 1 person can be challenging, finding 2 at once in the same city – extremely difficult!
We ended up moving to Sweden 🇸🇪 at the start of European winter – and after 3 months I started at @liu_universitet 🧳🧳🛫✈️🛬

Using Carbon Nanotubes additives in collagen and alginate hydrogels to develop new ways to repair the scar tissue on the heart after a heart attack. 🫀
Sweden was a wonderful experience, culturally, personally, and scientifically. ☑️☑️

I learned a lot about different ways to do (and not to do) science – I can’t recommend travelling and gaining different perspectives enough.
There are challenges in learning a new language, trying to embed yourself in a new culture – and surviving -20C temperatures (as an Australian – this was probably the biggest shock!)

The positives far outweighed the negatives though.
However, after 2 years in Sweden it was time for a change.

To this end it was time to travel again 🧳🛫🛬🧳, and after writing a Marie Curie Fellowship application it was off to London to join @ImpMaterials 🇬🇧
I’ll leave this thread here – I’ll finish off my story (so far) about London and Melbourne in a coming thread.
One thing that stands out - was that I didn’t really understand the importance of those first few years. ⁉️

Looking back, being more selective about where and what I worked on would have strengthened the future years.

Lots of benefits ☑️– lots of mistakes too 🤦!
You can follow @RealSci_Nano.
Tip: mention @twtextapp on a Twitter thread with the keyword “unroll” to get a link to it.

Latest Threads Unrolled: