Physics (Common Entry)

Interested in electronics, semiconductors, renewable energy, communications systems, sensors, medical devices, AI hardware or quantum technologies?

Physics is the scientific foundation behind every modern electronic technology. From microchips and photonics to electric vehicles and quantum computing, physicists develop the principles that engineers later turn into products. If you enjoy understanding how technology works at the deepest level and want a degree that keeps multiple career paths open, Physics at UL is an outstanding choice.

Why Study Physics in UL?

Many students who initially consider engineering discover that physics provides an equally strong but more flexible route into technology careers. While engineering often focuses on the design and implementation of existing systems, physics develops a deeper understanding of the principles governing electronics, materials, energy systems, computing and measurement. This depth of understanding enables graduates to move between research, development, data science, instrumentation and advanced engineering roles.

Physics is the study of matter and energy and their interaction: so it is the study of everything in the physical world. In order to learn about nature it is necessary to understand the language that she speaks in. This language is mathematics. A physicist uses the tools of experiment and mathematics to uncover the relationships found in nature as Physics.

Physicists get to ask the big questions and their work enables them to form answers. Physics describes the Universe from the very largest size (of the Universe itself) to the very small sizes of atoms and even subatomic particles. By asking and answering these big questions rather than simply observing nature, physicists can use the knowledge gained to control natural phenomena in the form of technology.

Modern technologies are built on physics. GPS navigation depends on Einstein's theories, microprocessors depend on quantum mechanics, and advanced sensors depend on our understanding of electromagnetism and materials. Physics graduates are uniquely positioned because they understand both the scientific principles and the technological applications behind these innovations. 

The examples described above involved developing a theory in Physics from conception through to a technological application. Physicists are part of this process at every step from theory to application. This flexibility for physicists in the workplace is one of the strengths of a Physics degree. A Physics degree imparts knowledge of the physical world, along with strong mathematical and problem-solving skills.

Physicists also have a broad knowledge of subjects that other disciplines would find difficult to match including Quantum Mechanics, Optics, Thermal Physics, Electromagnetism, Semiconductors, Solid State Physics, and Nanotechnology. The detailed knowledge of these areas ensures that good physics graduates will always be in demand by industry.

Physicists can also undertake research in either industry or academia. Faculty in the Department of Physics are actively involved in research in areas such as:

• Flow batteries for large scale energy storage,
• Using light to transmit information rather than electrons in wires (Nanophotonics and plasmonics),
• Computational modelling of assemblies comprising millions of atoms to determine properties of various materials,
• Using electron microscopy to determine the structure of nanoscale materials and to investigate novel 2-D materials like graphene,
• Microelectromechanical structures and devices for energy harvesting and biomedical applications.
• Semiconductor materials, interconnect reliability, electromigration, and advanced characterisation techniques for next-generation microelectronics.

Our researchers also work closely with Ireland's semiconductor industry, investigating topics such as semiconductor materials, electronic reliability, thin films, electrochemical processing and advanced microelectronic devices.

In your final year of study you will undertake a project working on these or other topics alongside and guided by established researchers in the Department.

Why Physics instead of Engineering?

Many students considering engineering are drawn to technologies such as microchips, communications systems, renewable energy and advanced sensors. Physics provides the scientific foundation for all of these technologies, giving you a deeper understanding of how and why they work. At UL, Applied Physics combines physics with electronics, computational modelling, and practical laboratory skills, while Mathematics & Physics develops advanced analytical and mathematical modelling expertise.

Instead of limiting yourself into a specific engineering discipline, a Physics degree can lead to various career opportunities in engineering, including roles in semiconductor technology, electronics, instrumentation, medical devices, energy systems, software, data science and advanced manufacturing. Physics graduates from UL have gone on to work with leading technology employers such as Intel, Analog Devices, and EI Electronics.

Physics also offers exceptional flexibility. Rather than specialising early, you develop strong mathematical, computational and problem-solving skills that allow you to move across a wide range of industries throughout your career. Whether your ambition is to develop next-generation electronics, contribute to quantum technologies, tackle energy challenges or pursue research and innovation, Physics provides the knowledge and versatility to succeed.

Physics doesn't just use technology; physics explains technology, advances it, and creates the foundation for the technologies of tomorrow.