https://ietresearch.onlinelibrary.wiley.com/doi/pdf/10.1049/rpg2.12119

Piezoelectric energy harvester converting wind aerodynamic energy into electrical energy for microelectronic application

Advances in wearable epidermal sensors have revolutionized the way that physiological signals are captured and measured for health monitoring. One major challenge is to convert physiological signals to easily readable signals in a convenient way. One possibility for wearable epidermal sensors is based on visible readouts. There are a range of materials whose optical properties can be tuned by parameters such as temperature, pH, light, and electric fields. Herein, this review covers and highlights a set of materials with tunable optical properties and their integration into wearable epidermal sensors for health monitoring. Specifically, the recent progress, fabrication, and applications of these materials for wearable epidermal sensors are summarized and discussed. Finally, the challenges and perspectives for the next generation wearable devices are proposed.

Materials with Tunable Optical Properties for Wearable Epidermal Sensing in Health Monitoring

Implementation of a new Bi-Directional Switch multilevel Inverter for the reduction of harmonics

A sensitive method for diagnosing coronavirus disease 2019 (COVID-19) is highly required to fight the current and future global health threats due to severe acute respiratory syndrome coronavirus 2 (SARS-CoV 2). However, most of the current methods exhibited high false‐negative rates, resulting in patient misdiagnosis and impeding early treatment. Nanoparticles show promising performance and great potential to serve as a platform for diagnosing viral infection in a short time and with high sensitivity. This review highlighted the potential of nanoparticles as platforms for the diagnosis of COVID-19. Nanoparticles such as gold nanoparticles, magnetic nanoparticles, and graphene (G) were applied to detect SARS-CoV 2. They have been used for molecular-based diagnosis methods and serological methods. Nanoparticles improved specificity and shorten the time required for the diagnosis. They may be implemented into small devices that facilitate the self-diagnosis at home or in places such as airports and shops. Nanoparticles-based methods can be used for the analysis of virus-contaminated samples from a patient, surface, and air. The advantages and challenges were discussed to introduce useful information for designing a sensitive, fast, and low-cost diagnostic method. This review aims to present a helpful survey for the lesson learned from handling this outbreak to prepare ourself for future  pandemic.

/pdf/nanobiotechnology-as-a-platform-for-the-diagnosis-of-covid-51d9dfbl69.pdf

Nanobiotechnology as a platform for the diagnosis of COVID-19: a review

Worldwide force age is estimate to increment by some 60% somewhere in the range of 2017 and 2040 to cover a fourth of essential vitality request, the IEA said in its World Energy Outlook 2018. "Power markets are experiencing a special change with more popularity brought by the advanced economy, electric vehicles" however numerous components are impacting the agreeableness of vitality innovation. The change of the vitality area is searching for clean vitality innovation that is additionally appropriate for base burden power generation. The sun based vitality is most utilized clean vitality today, but Terrestrial sun oriented vitality has several obstructions, Putting colossal sun based power satellite systems for arena addresses a lot of creative mechanical benefits than may give gigantic degree, normally clean base weight power into natural markets and it is one of the way in which satisfied essentialist demand in best in class days. Later, a symmetric concentrated with a high sun-based arrangement competence has been proposed.

An Energy Efficient Microwave Based Wireless Solar Power Transmission System

A four-port optical circulator based on two-dimensional square lattice photonic crystals is reported. It is simple besides the brief framework. The crystalline geometrical structure of the circulator makes 90° non-reciprocal transmissions of electromagnetic waves with low insertion loss and high levels of isolation by the diligence of magneto-optic crystals. The structure is novel because it uses a resonant cavity with a simple design. Also, in comparison to prior models, the proposed four-port circulator utilizes a two-dimensional square lattice crystal structure with a cylindrical ferrite section of the π/4 Faraday angle. The finite element method is used for this anisotropic medium to get the tensor elements in this simulation. The importance of the gyromagnetic properties of ferrite crystals for the non-reciprocal transmission is investigated. Furthermore, the corresponding S-parameters for this circulator are analyzed and reported. Due to the compact size and ease of fabrication, this device can be realized for applications such as splitting and isolation in photonic integrated circuits.

https://iopscience.iop.org/article/10.1088/1555-6611/ab1413/pdf

Compact four-port circulator based on 2D photonic crystals with a 90° rotation of the light wave for photonic integrated circuits applications

Performance investigation of 16/32-channel DWDM PON and long-reach PON systems using an ASE noise source

https://iopscience.iop.org/article/10.1088/1555-6611/abbe8b/pdf

Marcos Flores Carrasco

Papers

Compact four-port circulator based on 2D photonic crystals with a 90° rotation of the light wave for photonic integrated circuits applications

Performance investigation of 16/32-channel DWDM PON and long-reach PON systems using an ASE noise source

Photonic crystal based all-optical half adder: a brief analysis

Wearable Label‐Free Optical Biodetectors: Progress and Perspectives

Flexible compact system for wearable health monitoring applications