Now showing items 1-20 of 24

    • 3D skin microfluidic phantom for in vitro wearable testing 

      Rabost Garcia, Genís; Carreras Gallo, Óscar; Colmena, Valeria; Aguilar, Javier; Punter Villagrasa, Jaime; Muñoz Pascual, Francesc Xavier; Farré Lladós, Josep; Casals Terré, Jasmina (2020)
      Conference lecture
      Restricted access - publisher's policy
      A standardized and cost-effective perspiration phantom for in vitro testing is needed to replace the variable and resource consuming human tests at research level. Here, an alternative to the existing devices, which mainly ...
    • A passive portable microfluidic blood-plasma separator for simultaneous determination of direct and indirect ABO/Rh blood typing 

      Karimi, Shadi; Mehrdel, Pouya; Farré Lladós, Josep; Casals Terré, Jasmina (2019-09-03)
      Article
      Open Access
      The blood typing test is mandatory in any transfusion, organ transplant, and pregnancy situation. There is a lack of point-of-care (POC) blood typing that could perform both direct and indirect methods using a single droplet ...
    • Advancements in microfabricated gas sensors and microanalytical tools for the sensitive and selective detection of odors 

      Perarnau Ollé, Enric; Farré Lladós, Josep; Casals Terré, Jasmina (Multidisciplinary Digital Publishing Institute (MDPI), 2020-09-24)
      Article
      Open Access
      In recent years, advancements in micromachining techniques and nanomaterials have enabled the fabrication of highly sensitive devices for the detection of odorous species. Recent efforts done in the miniaturization of gas ...
    • Contaminant particle motion in lubricating grease flow: a computational fluid dynamics approach 

      Westerberg, Lars-Göran; Farré Lladós, Josep; Sarkar, Chiranjit; Casals Terré, Jasmina (2018)
      Article
      Open Access
      In this paper, numerical simulations of particle migration in lubricating grease flow are presented. The rheology of three lithium greases with NLGI (National Lubricating Grease Institute) grades 00, 1 and 2 respectively ...
    • Cost-effective microfabrication of sub-micron-depth channels by femto-laser anti-stiction texturing 

      Karimi, Shadi; Mehrdel, Pouya; Casals Terré, Jasmina; Farré Lladós, Josep (2020-02-26)
      Article
      Open Access
      Micro Electro Mechanical Systems (MEMS) and microfluidic devices have found numerous applications in the industrial sector. However, they require a fast, cost-effective and reliable manufacturing process in order to compete ...
    • Enhanced fully cellulose based forward and reverse blood typing assay 

      Casals Terré, Jasmina; Farré Lladós, Josep; López Martínez, Joan Antoni; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2019-05-07)
      Article
      Open Access
      This study presents an enhanced paper-based analytical device (PAD) for forward and reverse group blood typing. The proposed PAD uses a novel methodology, which provides highly reliable results on a fully cellulose based ...
    • Grease flow in an elbow channel 

      Westerberg, Lars; Farré Lladós, Josep; Li, Jinxia; Hoglund, Erik; Casals Terré, Jasmina (2015-03-01)
      Article
      Open Access
      The flow of lubricating greases in an elbow channel has been modeled and validated with velocity profiles from flow visualizations using micro-particle image velocimetry. The elbow geometry induces a non-symmetric distribution ...
    • Grease flow in an elbow-channel 

      Westerberg, Lars; Farré Lladós, Josep; Li, Jinxia; Hoglund, Erik; Casals Terré, Jasmina (2014)
      Conference report
      Restricted access - publisher's policy
    • Hemostasis-on-a-chip: Impedance spectroscopy meets microfluidics for hemostasis evaluation 

      Karimi, Shadi; Farré Lladós, Josep; Mir Fuertes, Enrique; Escolar Albaladejo, Ginés; Casals Terré, Jasmina (2019-08-14)
      Article
      Open Access
      In the case of vascular injury, a complex process (of clotting) starts, involving mainly platelets and coagulation factors. This process in healthy humans is known as hemostasis, but when it is deregulated (thrombosis), ...
    • Influences of trans-fatty acids on the tribological properties of plant oils 

      Farré Lladós, Josep; Igartua, Amaya; Minami, Ichiro (IK4-Tekniker, 2016)
      Conference report
      Restricted access - publisher's policy
      A great challenge on tribology is the improvement of vegetable oils lubrication properties, which are environmentally friendly products, to replace long established lubricants based on mineral oils (petroleum). It is well ...
    • Los aerogeneradores del futuro se beneficiarán de la nanotecnología 

      Farré Lladós, Josep; Casals Terré, Jasmina (Grupo Tecnipublicaciones, 2014-01)
      Article
      Restricted access - publisher's policy
      El impacto que la micro y la nanotecnología tendré en nuestras vidas debe ir en todo momento acompañado de un desarrollo sostenible de las fuentes de energía. La mejora de la producción de la energía eólica es un primer ...
    • Lubricating grease flow in a double restriction seal geometry: a computational fluid dynamics approach 

      Westerberg, Lars G.; Sarkar, Chiranjit; Farré Lladós, Josep; Staffan Lundström, T.; Hoglund, Erik (2017-09-01)
      Article
      Open Access
      In this paper, numerical simulations of lubricating grease flow in the grease pocket of a double restriction seal geometry using computational fluid dynamics are presented. The grease is treated as a single-phase ...
    • New lubrication device to minimize wear at the pitch gear 

      Farré Lladós, Josep; Casals Terré, Jasmina; Westerberg, Lars G. (European Wind Energy Association (EWEA), 2015)
      Conference lecture
      Restricted access - publisher's policy
    • New method for lubricating wind turbine pitch gears using embedded micro-nozzles 

      Farré Lladós, Josep; Westerberg, Lars G.; Casals Terré, Jasmina (Springer, 2017-02-19)
      Article
      Open Access
      The increase of power generated by wind turbines has increased the stresses applied in all of its components, thereby causing premature failures. Particularly, pitch and yaw gears suffer from excessive wear mainly caused ...
    • New solution to prevent excessive wear in wind turbine gears 

      Farré Lladós, Josep; Westerberg, Lars; Casals Terré, Jasmina (Curran, 2014)
      Conference report
      Restricted access - publisher's policy
      During wind turbines operation, yaw and pitch bearings suffer from sequential traction-compression stresses causing millions of micro movements per cycle between the gear teeth. This situation reduces the lubricant thickness ...
    • Novel applications of nonwood cellulose for blood typing assays 

      Casals Terré, Jasmina; Farré Lladós, Josep; Zuñiga, Allinson; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa (2018-10-03)
      Article
      Open Access
      Paper-based microfluidics devices can create a new healthcare model. Cellulose is carbohydrate polymer biocompatible and hydrophilic. These characteristics enhance the development of user-friendly diagnostic devices, but ...
    • Novel lubrication system to improve the excessive wear in wind turbine yaw and pitch gears 

      Farré Lladós, Josep (Universitat Politècnica de Catalunya, 2015-04-28)
      Doctoral thesis
      Open Access
      Manufacturers of wind turbines have observed a new phenomenon that appears in high power wind turbines: excessive wear in the teeth located at 0º in the pitch bearing. In order to design more efficient wind turbines, ...
    • Novel variable radius spiral-shaped micromixer: from numerical analysis to experimental validation 

      Mehrdel, Pouya; Karimi, Shadi; Farré Lladós, Josep; Casals Terré, Jasmina (2018-10-27)
      Article
      Open Access
      A novel type of spiral micromixer with expansion and contraction parts is presented in order to enhance the mixing quality in the low Reynolds number regimes for point-of-care tests (POCT). Three classes of micromixers ...
    • Numerical and experimental analysis of a high-throughput blood plasma separator for point-of-care applications 

      Karimi, Shadi; Mojaddan, Mohammad; Majidi, Sahand; Mehrdel, Pouya; Farré Lladós, Josep; Casals Terré, Jasmina (2021-05)
      Article
      Restricted access - publisher's policy
      Blood plasma separation from undiluted blood is an essential step in many diagnostic procedures. This study focuses on the numerical optimization of the microfluidic blood plasma separator (BPS) and experimental validation ...
    • Portable 3D-printed sensor to measure ionic strength and pH in buffered and non-buffered solutions 

      Mehrdel, Pouya; Karimi, Shadi; Farré Lladós, Josep; Casals Terré, Jasmina (2020-01-01)
      Article
      Restricted access - publisher's policy
      A miniaturized 3D-printed device has been designed, manufactured and validated to perform as a low-cost sensor for compositional analysis of buffered and non-buffered solutions in industrial or remote areas. The proposed ...