Laboratoire de Physique des Interfaces et des Couches Minces
CNRS - École polytechnique - Institut Polytechnique de Paris
Electronic circuits are not the only type of device that can exhibit behavior able to replicate biological neurons. In the past 20 years, researchers have developed optical neurons that also exhibit biomimetic properties and can therefor be considered in the context of photonic neuromorphic computing. Such systems are much faster (< 1 nsec spikes) and […]
One source of biologically inspired ideas comes from the functionality of DNA, the molecule that carries the genetic instructions for all living organisms. The copying of the code stored in DNA is the starting point in the information flow described in the central dogma of biology [4], where a gene is transformed into a protein, […]
The advances in modern computing technology have predominantly been driven by improving semiconductor processing to make transistors run faster. This type of methodology, known as transistor scaling, has significantly slowed down in the past 15 years due to physical limitations. Meanwhile, improvements in computing technology have immensely impacted our lives in the past 50 years […]
Computing in biological systems is inprecise. We are not particularly good computing machines compared to even a simple calculator. This is fundamentally because our hardware functions in a noisy environment and most events are associated with a probability not with a perfect certainty. This notion inspired von Neumann to develop a computing paradigm based on […]
Our research interests are focused on the design, synthesis and characterization of pi-conjugated small molecules and polymers with potential applications in the fields of organic electronics and material sciences. Advanced organic synthetic methodologies are used. The intrinsic properties are studied by modern physical organic methods (electronic spectroscopies, cyclic voltammetry…), and the structure-property relationship of these […]
Pere Roca i Cabarrocas, pere.roca@polytechnique.edu François Silva, francois.silva@polytechnique.edu In last twenty years, researchers at LPICM have been deeply invested in the field of low temperature plasma epitaxy, addressing both plasma / material fundamental aspects, including ab initio molecular dynamics modelling, and applications of silicon for PV and microelectronics. These studies have been limited so far […]
The structure of an OLED is a superposition of several organic semiconductor layers between two electrodes, one of which (at least) is transparent. Organic semiconductors used in an OLED can be either small molecules or polymers. However, the most complex structures (comprising several layers) preferentially use small molecules deposited by thermal evaporation. Polymers semi-conductors are […]
Based on ab initio molecular dynamics simulations, we show that small nanoclusters of about 1 nm size spontaneously generated in a low-temperature silane plasma do not possess tetrahedral structures, but are ultrastable. Apparently small differences in the cluster structure result in substantial modifications in their electric, magnetic, and optical properties, without the need for any […]
This work reports the non-covalent functionalization of SWNTs with Fe-porphyrin, Co-porphyrin and Co-phthalocyanine molecules. The functionalized SWNTs were first characterized using Raman and X-ray photoelectron spectroscopies. Observations down to nanoscale resolution were also performed by atomic force microscopy, as well as scanning and transmission electron microscopies. The spectroscopic methods evidenced an electronic interaction between the […]
INTRODUCTION Silicon based approaches have attracted enormous attention since the first steps of nanotechnology have become a reality [1]. The fruitful results obtained for graphene [2,3] gave new momentum to the research in two dimensional (2D) materials [4,5]. Being directly compatible with existing semiconductor technologies, silicon in a 2D configuration, namely ‘silicene’, has received a […]