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


Phonon dispersion in hypersonic two-dimensional phononic crystal membranes


B. Graczykowski, M. Sledzinska, F. Alzina, J. Gomis-Bresco, J.S. Reparaz, M.R. Wagner, and C.M. Sotomayor Torres. Physics Review B, 91, 75414 (2015). open reference link »


A self-stabilized coherent phonon source driven by optical forces


D. Navarro-Urrios, N. E. Capuj, J. Gomis-Bresco, F. Alzina, A. Pitanti, A. Griol, A. Martínez and C. M. Sotomayor Torres. Scientific Reports (2015) open reference link »


Coherent phonon generation in optomechanical crystals

D. Navarro-Urios, A. Tredicucci, C.M. Sotomayor Torres. SPIE. DOI: 10.1117/2.1201507.006036   open reference link »


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 »

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 »