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Meet our academics from the Department of Engineering

Our interview series introduces researchers who have started in the Faculty of Natural, Mathematical & Engineering Sciences within the last year.

In this instalment, we spoke to Dr Yutaku Kita, Dr Yihua Hu and Dr Michael Gomez from the Department of Engineering.

 
Yutaku Kita

Dr Yuktaku Kita

Dr Yuktaku Kita is a Lecturer in the Department of Engineering. He fell in love with engineering before he even started school when he started building and creating using cardboard and found materials. His research centres on the fundamental side of the field, including fluid dynamics and heat transfer.

 

What first attracted you to the field of Engineering?

My early interest in engineering started in my nursery days. Since both my parents worked until late, I often stayed in the nursery for extended hours. While waiting for my parents, I created miniature cars, robots and buildings using cardboard, thread and straws. I became fascinated by understanding the behaviour of these materials and coming up with an idea to use them to construct something that works!

As I progressed by studying, my interest shifted towards fundamental sides - e.g. fluid dynamics and heat transfer. However, I still love to spend time in the lab building up equipment to observe thermofluids phenomena!

What do you think is the biggest misconception people have about Engineering?

I used to believe that engineering and its branches were highly specialised fields so that if I chose mechanical engineering I would not have to study chemistry (in which I struggled), literature and economy anymore! However, we are living in a complex society where we must work collaboratively with people from different expertise to tackle today's global and local challenges. 

Engineering, therefore, requires broader views, knowledge and social skills in addition to your own expertise.

What's the biggest mystery in science you'd love to solve or see solved?

One of the most significant questions I am currently exploring is how we can link phenomena across different time and spatial scales, or whether this is even possible. It is often the case in nature that local behaviour is somewhat different from what is observed at the macroscopic level. 

For example, one of my projects is related to rapid cooling such as steel manufacturing and emergency core cooling. In those applications, tons of water are sprayed onto a metre-sized surface whose temperature is several hundred degrees. It may seem like a large-scale problem, but I am tackling this by looking at a single droplet smaller than 1 mm hitting the surface. 

While we gain valuable insights from studying individual droplets to improve the cooling process, a gap remains between individual droplets and the overall spray. Therefore, I have been working to come up with a theory or experiments to bridge across scales (from micro to macro) for a problem of interest, which I hope will ultimately help to address multiscale problems in broader scientific contexts.

What advice would you give to someone considering studying Engineering?

Be proud! Throughout history, engineering has played a vital role in human civilisation. As engineers, we harness the power of nature to create useful solutions. This is a highly rewarding profession. 

However, we must remain mindful of the impact our work can have on people's lives and the environment - for instance, consider the consequences if natural power is misused? What if we falsify the design of aircrafts for whatever reason? 

While studying engineering, you will acquire specialised knowledge and skills, opening up exciting career opportunities. My advice, or rather, wish for you is to be proud, honest and responsible individual. Remember the timeless adage: "With great power comes great responsibility."

What do you do in your spare time?

On a beautiful day, I like to walk around my neighbourhood during both morning and afternoon hours. It helps me organise thoughts and refresh. While walking, I also like to observe flows in nature such as falling leaves, rivers, and dew or rain droplets on plants!

 
Yihua Hu

Dr Yihua Hu

Dr Yihua Hu is a Reader in the Department of Engineering. He comes from a family of engineers and was inspired by the massive impact engineering can have to improve lives. He is passionate about addressing clean energy and energy equity issues in his research.

What first attracted you to the field of Engineering?

Engineering runs deep in my family's history; both my parents and grandparents were involved in engineering-related businesses. Witnessing first-hand how engineering can revolutionise industries and improve the lives of ordinary people inspired me.

My parents specialised in fabricating mechanical components for tractors, while my grandparents ingeniously repurposed waste car components to create tools for farmers and installed propulsion systems for boats.

What do you think is the biggest misconception people have about Engineering?

Differentiating between science and engineering is crucial. To draw an analogy, consider treating a patient: science focuses on developing medicines to cure diseases, while engineering devises painkillers to alleviate suffering or performs surgical procedures. 

Engineering holds immense significance as it directly impacts people's lives and addresses their needs. Engineers serve as vital intermediaries between scientific advancements and practical applications, ensuring that scientific discoveries translate into tangible benefits for society. 

What's the biggest mystery in science you'd love to solve or see solved?

Clean energy and energy equity are paramount concerns. Achieving decarbonisation across energy generation, transmission, and consumption is imperative. in regions like the UK where there are harsh winters, and in places like the Middle East and Sahara where arid climates post significant challenges. 

However, these challenges present opportunities for leveraging renewable energy sources and implementing smart grid technologies. Personally, I am committed to developing intricate safety systems for electric vehicle powertrains and advancing power supply structures for electric aircraft and ships to contribute to achieving net-zero emissions in all transportation. 

Additionally, I am passionate about addressing energy equity issues. For instance, while home-based photovoltaic roofs and energy storage systems offer sustainable solutions, they remain inaccessible to many due to cost constraints or limit installation space. Collaborating with policymakers, I aim to devise strategies to make low-cost energy solutions more accessible to low-income families.

What advice would you give to someone considering studying Engineering?

Stay attuned to the daily needs of people, and cultivate both analytical (mathematical) and practical (design and technological) skills concurrently. Embrace curiosity and don't hesitate to disassemble unused objects; as a child, I found great joy in dismantling various items, which fueled my curiosity and problem-solving abilities. 

What do you do in your spare time?

I dedicate most of my leisure time to sports, often frequenting the David Lloyd club. I enjoy playing basketball, badminton, and tennis, and I also maintain a regular fitness routine that includes swimming and gym workouts.

 
Michael Gomez

Dr Michael Gomez

Dr Michael Gomez is a Lecturer in Engineering. With a background in applied mathematics, his interests in the interface between theory and experiment brought him to engineering during his PhD. He enjoys a multi-disciplinary approach to research. 

What first attracted you to the field of Engineering?

Coming from an applied mathematics background, I think the turning point came during my PhD on elastic 'snap-through' - a type of instability in which an elastic object rapidly jumps from one state to another, like when an umbrella flips upwards in a gust of wind. 

I learned how similar instabilities can be harnessed in novel technologies as diverse as artificial heart pumps, jumping robots and micro-scale switches. I became fascinated with how these applications motivate fundamental questions in structural mechanics, which, in turn, can form the basis of new engineering designs. 

My own research interests lie at the interface between theory and experiment, for which I have found engineering to be a natural home: I enjoy the highly multi-disciplinary and collaborative research environment.

What do you think is the biggest misconception people have about Engineering?

I think a major misconception is that engineering is limited to large-scale structures (e.g., buildings, bridges, tunnels) or 'traditional' mechanical systems such as engines, turbines and pumps.

Engineering, in it's broadest sense, is the application of scientific principles to solve relevant technological problems; it encompasses an extremely wide variety of mechanical, electrical, computational, biological, chemical, and social systems - which span virtually all scales.

What's the biggest mystery in science you'd love to solve or see solved?

 For me, the biggest mystery is the origin of human consciousness. Is consciousness a type of emergent phenomenon, when a network of interacting sub-units grows sufficiently complex? Or is it something else entirely?

Does consciousness arise deterministically or does it rely on an 'upscaling' of random microscopic fluctuations? The answers to these questions would have profound implications for the limits of intelligence, natural or artificial, as well as for the philosophy of the mind and free will.

I should say my interest in this is purely recreational - I don't intend to address these questions in my research, unless somehow it is discovered that consciousness is caused by mechanical instabilities!

What advice would you give to someone considering studying Engineering?

Be willing to draw ideas and methods from different disciplines, as this can be a powerful tool to tackle complex problems. Often, concepts in different fields that initially seem disparate can actually be intimately related, and it is just a case of learning the language to translate between them. 

From PhD students who are interested in an academic career, try not to narrow down your interests too much, but continue to broaden and learn new methods as you progress. 

What do you do in your spare time?

In my spare time I enjoy walking, reading fantasy books and checking how many views my cat video has on YouTube.

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