Set in the Catalan Institute of Nano-technology (ICN) in Barcelona and led by Prof. Clivia Sotomayor Torres, the Phononic and Photonic Nanostructures group (P2N) investigates phonon/pho-ton/electron interactions in nano-scale condensed matter underpinned by research in nanofabrication, especially nanoimprint lithography. The long-term aim is to develop new information technology concepts where information processing is achieved with multiple state variables.

Research is carried out on nano-scale thermal and acoustic effects in both confined systems and phononic crystals; on methods to control the exciton-plasmon coupling targeting enhanced light extraction in light sources; and on the optimisation of the optical gain of printed polymer-based photonic structures.

In order to facilitate the uptake of nano-technology innovations by industry, the group is advancing nanoimprint lithography towards the realisation of 3D nano- and hybrid structures. For the latter, efforts are focused on acoustic-field assisted self-assembly of nano- and mesoscopic particles, to realise heterostructures and to deposit them selectively on patterned and or surface-functionalised substrates.

Latest Publications


Residual layer-free Reverse Nanoimprint Lithography on silicon and metal-coated ...


A. Fernández, J. Medina, C. Benkel, M. Guttmann, B. Bilenberg, L. Thamdrup, T. Nielsen, C. M. Sotomayor Torres, N. Kehagias. Microelectronic Engineering, 141, 56 (2015) open reference link »


Structural characterisation of slightly Fe-doped SrTiO3 grown via sol-gel hydrot...


S. Fuentes, P. Muñoz, N. Barraza, E. Chávez-Ángel, and C. M. Sotomayor Torres. Journal of Sol-Gel Science and Technology, DOI 10.1007/ s10971- 015-3730-4 (2015). open reference link »


Reconstructing phonon mean free path contributions to thermal conductivity using...


J. Cuffe, J. K. Eliason, A.A. Maznev, and C. M. Sotomayor Torres. Physical Review B. arXiv:1408.6747. arXiv:1408.6747 open reference link »


Tuning thermal transport in ultra-thin silicon membranes by surface nanoscale en...


S. Neogi, J. S. Reparaz, L. Pereira, B. Graczykowski, M. R. Wagner, M. Sledzinska, A. Shchepetov, M. Prunnila, J. Ahopelto, C. M. Sotomayor Torres, D. Donadio. ACS Nano, 9 (4), 3820 (2015) open reference link »

Latest News


Job opportunities – Deadline 28/06/2015

June 15, 2015 in Uncategorized

The Phononic and Photonic Nanostructures group crrently offers two PhD project opportunities on: 1. Phonon-photon coupling in purpose-designed nanostructures for wave generation and manipulation 2. Image analysis for dimensional and defectivity nanometrology of arrays of nanostructures Details of the projects: Phonon-photon coupling in purpos... more »

Sweta Bhansali receives the 2015 E-MRS Graduate Student Award

May 15, 2015 in Uncategorized

PhD student Sweta Bhansali, from the Phononic and Photonic Nanostructures Group led by ICREA Research Prof Clivia Sotomayor-Torres, received a 2015 E-MRS Graduate Student Award for her contribution in the field of nanostructured thermoelectrics using oxides. Thermoelectricity converts wasted heat into electricity and vice-versa. In the quest of fin... more »


P2N in the media: Huge reduction of heat conduction observed in flat silicon channels

May 6, 2015 in Uncategorized

El Mundo Innovadores and a wide range of online media covered the latest article published at ACS Nano by the the Phononic and Photonic Nanostructures (P2N) Group, led by ICREA Research Prof. Clivia Sotomayor-Torres. The work is an international effort developed within the European Project MERGING. El Mundo Innovadores (05-05-2015) (online vers... more »


Surface matters: Huge reduction of heat conduction observed in flat silicon channels

April 22, 2015 in Uncategorized

22nd April 2015. The ability of materials to conduct heat is a concept that we are all familiar with from everyday life. The modern story of thermal transport dates back to 1822 when the brilliant French physicist Jean-Baptiste Joseph Fourier published his book “Théorie analytique de la chaleur” (The Analytic Theory of Heat), which became ... more »