Jose Manuel Sanchez-Pena

Prof. Jose Manuel Sanchez-Pena

orcid

Research Focus & Metrics

Academic Career Length

32Years (1995-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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17 December 2010 in Journal of Materials Chemistry
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MŻMagdalena Żurowska
Magdalena Żurowska
RDRoman Dąbrowski
Roman Dąbrowski
JDJerzy Dziaduszek
Jerzy Dziaduszek
KGKatarzyna Garbat
Katarzyna Garbat
MFMarek Filipowicz
Marek Filipowicz
JSJOSE MANUEL OTON SANCHEZ
JOSE MANUEL OTON SANCHEZ
The synthesis and properties of a few dozen highly evolved analogues of (S)-MHPOBC are reported. The liquid crystal phases, and phase transition temperatures and enthalpies, as evidenced by polarized optical microscopy and differential scanning calorimetry, respectively, are given. The helical pitch in pure compounds and some mixtures is estimated using the selective reflection method. All of the compounds show antiferroelectric phases, and some key structure–property relationships for the new materials are reported. Specifically, it is found that the length of the oligomethylene segment of a novel partially fluorinated alkoxy ether tail incorporated into the structures strongly influences the stability of the antiferroelectric phase and the observed phase sequences, as well as the values of the helical pitch and its temperature dependence. The formulation of a family of broad temperature range eutectic mixtures possessing the highly desirable orthoconic antiferroelectric phases with long helical pitch is described.

25 May 2019 in Crystals
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Journal Article
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JAJ. F. Algorri
J. F. Algorri
Dimitrios ZografopoulosDimitrios Zografopoulos
Dimitrios Zografopoulos
VUVirginia Urruchi
Virginia Urruchi
JSJose Manuel Sanchez-Pena
Jose Manuel Sanchez-Pena
An adaptive-focus lens is a device that is capable of tuning its focal length by means of an external stimulus. Numerous techniques for the demonstration of such devices have been reported thus far. Moving beyond traditional solutions, several new approaches have been proposed in recent years based on the use of liquid crystals, which can have a great impact in emerging applications. This work focuses on the recent advances in liquid crystal lenses with diameters larger than 1 mm. Recent demonstrations and their performance characteristics are reviewed, discussing the advantages and disadvantages of the reported technologies and identifying the challenges and future prospects in the active research field of adaptive-focus liquid crystal (LC) lenses.

4 December 2018 in Sensors
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Journal Article
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JAJ. F. Algorri
J. F. Algorri
Dimitrios ZografopoulosDimitrios Zografopoulos
Dimitrios Zografopoulos
AMAlberto Tapetado Moraleda
Alberto Tapetado Moraleda
DPDavid Poudereux
David Poudereux
JSJose Manuel Sanchez-Pena
Jose Manuel Sanchez-Pena
Photonic crystal fibers (PCFs) are a special class of optical fibers with a periodic arrangement of microstructured holes located in the fiber’s cladding. Light confinement is achieved by means of either index-guiding, or the photonic bandgap effect in a low-index core. Ever since PCFs were first demonstrated in 1995, their special characteristics, such as potentially high birefringence, very small or high nonlinearity, low propagation losses, and controllable dispersion parameters, have rendered them unique for many applications, such as sensors, high-power pulse transmission, and biomedical studies. When the holes of PCFs are filled with solids, liquids or gases, unprecedented opportunities for applications emerge. These include, but are not limited in, supercontinuum generation, propulsion of atoms through a hollow fiber core, fiber-loaded Bose–Einstein condensates, as well as enhanced sensing and measurement devices. For this reason, infiltrated PCF have been the focus of intensive research in recent years. In this review, the fundamentals and fabrication of PCF infiltrated with different materials are discussed. In addition, potential applications of infiltrated PCF sensors are reviewed, identifying the challenges and limitations to scale up and commercialize this novel technology.

27 December 2018 in Nanomaterials
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JAJ. F. Algorri
J. F. Algorri
Dimitrios ZografopoulosDimitrios Zografopoulos
Dimitrios Zografopoulos
AFAntonio Ferraro
Antonio Ferraro
Braulio Garcia-CamaraBraulio Garcia-Camara
Braulio Garcia-Camara
RVRicardo Vergaz
Ricardo Vergaz
JSJose Manuel Sanchez-Pena
Jose Manuel Sanchez-Pena
This work proposes the use of the refractive index sensitivity of non-radiating anapole modes of high-refractive-index nanoparticles arranged in planar metasurfaces as a novel sensing principle. The spectral position of anapole modes excited in hollow silicon nanocuboids is first investigated as a function of the nanocuboid geometry. Then, nanostructured metasurfaces of periodic arrays of nanocuboids on a glass substrate are designed. The metasurface parameters are properly selected such that a resonance with ultrahigh Q-factor, above one million, is excited at the target infrared wavelength of 1.55 µm. The anapole-induced resonant wavelength depends on the refractive index of the analyte superstratum, exhibiting a sensitivity of up to 180 nm/RIU. Such values, combined with the ultrahigh Q-factor, allow for refractometric sensing with very low detection limits in a broad range of refractive indices. Besides the sensing applications, the proposed device can also open new venues in other research fields, such as non-linear optics, optical switches, and optical communications.

23 January 2023 in Optics & Laser Technology
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Journal Article
Open access
JAJ.F. Algorri
J.F. Algorri
Francesco Dell'olioFrancesco Dell'olio
Francesco Dell'olio
YDYunhong Ding
Yunhong Ding
FLF. Labbé
F. Labbé
VDVictor Dmtriev
Victor Dmtriev
Dimitrios ZografopoulosDimitrios Zografopoulos
Dimitrios Zografopoulos

12 September 2013 in Sensors
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Journal Article
Open access
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BABelen Arredondo
Belen Arredondo
Beatriz R RomeroBeatriz R Romero
Beatriz R Romero
JSJose Manuel Sanchez-Pena
Jose Manuel Sanchez-Pena
AFAgustín Fernández-Pacheco
Agustín Fernández-Pacheco
EAEduardo Alonso
Eduardo Alonso
CDCristina de Dios
Cristina de Dios
A visible light communication (VLC) system using an organic bulk heterojunction photodetector (OPD) is presented. The system has been successfully proven indoors with an audio signal. The emitter consists of three commercial high-power white LEDs connected in parallel. The receiver is based on an organic photodetector having as active layer a blend of poly(3-hexylthiophene) (P3HT) and phenyl C61-butyric acid methyl ester (PCBM). The OPD is opto-electrically characterized, showing a responsivity of 0.18 A/W and a modulation response of 790 kHz at −6 V.