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Juan Luis Palma
Juan.palma [at] ucentral.cl
985216844
Central University of Chile
FONDEQUIP PROJECT EQM200216

We have obtained a FONDEQUIP of 135 million, Xi Computer helped us to generate the most efficient architecture for our Deep Space Image Analysis for Astrophysics and Condensed Matter Calculation project. With this we generate a cold room in the Coquimbo region. In addition, in Santiago, we have obtained 3 computing machines for our cold room, focused directly on solid state physics calculations. Personally, I can say that Xi Computer offered us an excellent quality-price ratio, since other companies were lowering our benefits a lot. Xi Computer generated trust in us, they are very professional, flexible and helped us with the technical and institutional problems of our projects.

Graphic-power Unit Integrated Numerical Analyzer.

 “Graphic-Power Unit Integrated Numerical Analyzer” is the name that identifies the first Fund for Scientific and Technological Equipment (fondequip), awarded in October 2020 by the National Agency for Research and Development of (anid) to ucen. The güina project —which in the Diaguita language means “woman”— will allow the acquisition of a cluster of computers for computer simulations, becoming the first gpu computing center in the Coquimbo region. The equipment will be used to develop six research areas: nanotechnology, gravitation, data mining, lsst data exploitation, astrochemistry and inorganic chemistry, which will allow interdisciplinary and collaborative work between finarq and the Faculty of Health (facsalud), in addition to link with undergraduate and postgraduate teaching. The project is directed by Paulina Troncoso, PhD in Astrophysics and director of the Bachelor's Degree in Astronomy that is taught at the UCEN Regional Headquarters, who will be accompanied by a team of researchers from the finarq of the headquarters in Santiago and in the Region from Coquimbo. This group will be made up of PhDs in Sciences with a major in Physics Juan Luis Palma and Alejandro Riveros, PhD in Physical Sciences Cristián Erices, PhD in Molecular Physicochemistry Luis Álvarez Thon, Masters in Education Claudio Piña and Masters in Astrophysics Basilio Solís and the Civil Industrial Engineer Sebastián Baeza. They are joined by the doctor in Chemistry from the facsalud-ucen Iván González and the doctor in Physics and Molecular Chemistry from the Autonomous University Natalia Inostroza

Güina: Graphic Power Unit Integrated Numerical Analyzer
Cristóbal Acosta
cristobal.acosta [at] usach.cl
+56986385446

Usach Computer Engineering Department currently, the acquired servers are working, helping academics from our department to carry out their research experiments. The provided servers have remained functional, and provide a good balance between price/quality of the components. The treatment and technical support to quote servers according to our needs has been excellent. I recommend them 100%

Sebastián Pérez
sebastian.astrophysics [at] gmail.com
+5697876812
University of Santiago / Milenio Core Yems
Fondecyt Regular 1191934
Millennium nucleus YEMS NCN2021_080
Millennium Core Project YEMS NCN2021_080

Thanks to a regular Fondecyt fund we manage to pay the puellche server. XI Computer helped us find the ideal setup for our computing needs. This resulted in a server dedicated to hydrodynamic simulations and deep learning, based on the A100 GPU architecture. It has been key to have the advice of XI Computer, who effectively led us to the ideal CPU/GPU/memory/storage configuration for our project. Overall, the addition of Puelche and his A100 GPU cards to our research team has been a major advance in our ability to perform hydrodynamic simulations and train deep learning networks. The improved speed and efficiency allow us to advance our understanding of physical phenomena faster and improve the accuracy of our models.

https://youngexoplanets.github.io/index-es.html

The Millennium Nucleus on Young Exoplanets and their Moons (YEMS) is a multidisciplinary astronomy and informatics effort funded by the Millennium Science Initiative and organized by four universities in Chile. YEMS science goals involve the detection and characterization of young exoplanets and exomoons to answer the longstanding question about their formation.

Can we search for life on the moons of exoplanets?

The formation of planets and moons are closely related, which means that moons can help us understand the origin of a planet. Furthermore, most of the candidate places to look for life in our Solar System are on the moons of the giant planets. Jupiter, for example, is not in the habitable zone of the Solar System, but Jupiter's moons, such as Europa, are ideal places to study life beyond Earth.

https://s3.amazonaws.com/documentos.anid.cl/centros/nucleos-milenio/esp/YEMS_Esp.pdf

Alejandro Riveros
Alejandro.riveros [at] ucentral
984186393
Universidad Central de Chile The 3 pieces of equipment purchased have been essential to carry out the micromagnetic simulations of nanomagnetic systems carried out by the condensed matter group of the university, it is also being used by collaborators from other institutions such as from the Autonomous University of Chile highlight the professionalism and cordiality of the xi computer team, suppliers of the computer cluster equipment.

PAI PROJECT 77190042

STUDY OF THE STABILITY AND DYNAMICS OF VORTEX TYPE MAGNETIC TEXTURES AND SKYRMIONS IN CYLINDRICAL AND RECTANGULAR NANOSTRUCTURED SYSTEMS, COMPOSED OF A SIMPLE AND MULTILAYER MAGNETIC MATERIAL PAI - ADVANCED HUMAN CAPITAL ATTRACTION AND INSERTION

PROGRAM

https://www.sciencedirect.com/science/article/pii/S2211379720320362#fig5

 A team of American researchers has created the smallest group of skyrmions. Skyrmions are magnetic nanostructures that will push memory density to its limits. To write and read information, conventional computers use memories that are based on magnetic materials. Although it is approaching its limits, decades-old memory technology

https://serman.com/blog-recuperacion-datos/skyrmions-nanoestructuras-magneticas/

Magnetism in matter and Nanomagnetism

https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41467-021-27710-w/MediaObjects/41467_2021_27710_Fig1_HTML.png

Daniel Aravena
daniel.aravena.p [at] usach.cl
27181179
USACH

Servers for high-performance computing in scientific research.         .

Regular Fondecyt Project 1210325

SPIN AND CHIRALITY: NEW STRATEGIES FOR SPIN-DEPENDENT FUNCTIONALITY IN INORGANIC MATERIALS

Spin and Chirality: new strategies for spin-dependent functionality in inorganic material.

Inorganic Chemistry Frontiers

Computational Chemistry Molecular Magnetism Molecular Spintronics

Inorganic Chemistry Frontiers 2020 Best Paper Prize presented to Daniel Aravena et al. for their article entitled “High performance single-molecule magnets, Orbach or Raman relaxation suppression?” congratulations!

https://www.quimicaybiologia.usach.cl/sites/all/themes/tercernivel_slide/images/Planetario-Investigaci%C3%B3n%202.png

​​https://www.quimicaybiologia.usach.cl/

 The main focus of my research is the calculation of the spectroscopic and magnetic properties of various inorganic systems, such as single-molecule magnets, host-responsive metal-organic frameworks, molecular devices, photomagnetic and spin-crossing compounds. Systems are studied using Density Functional Theory (DFT) and ab initio multi-reference calculations (CASSCF/NEVPT2), while properties are obtained directly from electronic structure calculations or through Hamiltonian model approaches (Spin-Hamiltonian or ab initio Ligand Field theory).

​​

https://pubs.acs.org/doi/abs/10.1021/ic402367c

https://pubs.acs.org/doi/abs/10.1021/ic402367c

Daniel Aravena: Daniel Aravena is Associate Professor at University of Santiago of Chile. DA research focus in the calculation of spectroscopic and magnetic properties of diverse inorganic systems, such as lanthanide Single Molecule Magnets and transition metal based luminescent complexes .

Alejandro Castro Alvarez
alejandro.castro.a [at] ufrontera.cl         
+56956949664           

Universidad de La Frontera    Thanks to the server acquired by XI Computer, I was able to form a research group with a high rate of scientific productivity (average of 5 articles per year). Mainly, the use of the server has focused on strengthening bioinformatics research (structural and drug design), achieving the training of undergraduate and postgraduate students. In addition, we have managed to generate collaborations at a national and international level.             The service and attention was excellent, especially that they have shown a constant concern about the operation of the machine and the technical service necessary to set it up in the computer center of the university. The team has more than met expectations.

Application of Synchrotron Radiation-Based Fourier-Transform Infrared Microspectroscopy for Thermal Imaging of Polymer Thin Films.

The thermal imaging of surfaces with microscale spatial resolution over micro-sized areas remains a challenging and time-consuming task. Surface thermal imaging is a very important characterization tool in mechanical engineering, microelectronics, chemical process engineering, optics, microfluidics, and biochemistry processing, among others. Within the realm of electronic circuits, this technique has significant potential for investigating hot spots, power densities, and monitoring heat distributions in complementary metal-oxide-semiconductor (CMOS) platforms. We present a new technique for remote non-invasive, contactless thermal field mapping using synchrotron radiation-based Fourier-transform infrared microspectroscopy. We demonstrate a spatial resolution better than 10 um over areas on the order of 12,000 um 2 measured in a polymeric thin film on top of CaF 2 substrates. Thermal images were obtained from infrared spectra of poly(methyl methacrylate) thin films heated with a wire. The temperature dependence of the collected infrared spectra was analyzed via linear regression and machine learning algorithms, namely random forest and k-nearest neighbor algorithms. This approach speeds up signal analysis and allows for the generation of hyperspectral temperature maps. The results here highlight the potential of infrared absorbance to serve as a remote method for the quantitative determination of heat distribution, thermal properties, and the existence of hot spots, with implications in CMOS technologies and other electronic devices.

Thermal imaging of surfaces with micro-scale spatial resolution over micro-sized areas remains a challenging and time-consuming task. Surface thermography is a very important characterization tool in mechanical engineering, microelectronics, chemical process engineering, optics, microfluidics, and biochemical processing, among others. Within the realm of electronic circuitry, this technique has significant potential for investigating hot spots, power densities, and monitoring heat distributions in complementary metal oxide semiconductor (CMOS) platforms. We present a new technique for non-contact, non-invasive remote thermal field mapping using synchrotron radiation-based Fourier transform infrared microspectroscopy. We demonstrate a spatial resolution greater than 10 um over areas of the order of 12,000 um2 measured in a polymeric thin film on CaF2 substrates. Thermal images were obtained from infrared spectra of poly(methyl methacrylate) thin films heated with a wire. The temperature dependence of the collected infrared spectra was analyzed using linear regression and machine learning algorithms, namely random forest and k-nearest neighbor algorithms. This approach speeds up signal analysis and allows the generation of hyperspectral temperature maps. The results here highlight the potential of infrared absorbance to serve as a remote method for the quantitative determination of heat distribution, thermal properties, and the existence of hot spots, with implications for CMOS technologies and other electronic devices.

Derek Frydel  
dfrydel [at] gmail.com   
+56997176983           
USM  

Simulations, numerical computations. I am able to run 48 or more jobs at a time. The speed of computations is faster than anything I have used before.      I am generally very content with the product and service.

My research interest is in theoretical research of soft-matter systems. I use a broad range of computational and analytical methods and my research overlaps with physics, chemistry, biology, mathematics, and industry. In addition, I have experience in teaching (statistical mechanics, physical chemistry, solid-state physics) and some limited supervision.

My research interest is the theoretical investigation of soft matter systems. I use a wide range of computational and analytical methods and my research overlaps with physics, chemistry, biology, mathematics, and industry. In addition, I have teaching experience (statistical mechanics, physical chemistry, solid state physics) and limited supervision.

Main area:

Theoretical Physicochemistry

Lines of investigation:

Theory of the liquid state, statistical mechanics, dynamics, electrostatics

The present work investigates the effect of inertia on the entropy production rate Π for all canonical models of active particles for different dimensions and the type of confinement. To calculate Π, the link between the entropy production and dissipation of heat rate is explored, resulting in a simple and intuitive expression. By analyzing the Kramers equation, alternative formulations of Π are obtained and the virial theorem for active particles is derived. Exact results are obtained for particles in an unconfined environment and in a harmonic trap. In both cases, Π is independent of temperature. For the case of a harmonic trap, Π attains a maximal value for τ=ω−1, where τ is the persistence time and ω is the natural frequency of an oscillator. For active particles in one-dimensional box, or other nonharmonic potentials, thermal fluctuations are found to reduce Π.

 The present work investigates the effect of inertia on the rate of entropy production Π for all the canonical models of active particles for different dimensions and the type of confinement. To calculate Π, the link between entropy production and rate of heat dissipation is explored, resulting in a simple and intuitive expression. By analyzing the Kramers equation, alternative formulations of Π are obtained and the virial theorem for active particles is derived. Accurate results are obtained for particles in an unconfined environment and in a harmonic trap. In both cases, Π is independent of temperature. For the case of a harmonic trap, Π reaches a maximum value for τ=ω−1, where τ is the persistence time and ω is the natural frequency of an oscillator. For active particles in a one-dimensional box or other nonharmonic potentials, thermal fluctuations are found to reduce Π.