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Topic Review
Fundamentals and Mechanisms of Light-Activated Gas Sensors
The light-activated gas sensors show promising results, particularly using visible light as an external trigger that lowers the power consumption as well as improves the stability, sensitivity and safety of the sensors. It effectively eliminates the possible damage to sensing material caused by high operating temperature or high energy light. 
  • 58
  • 07 Mar 2024
Topic Review
Experimental Approach to Silicon Heterojunction Tandem Solar Cells
A solar cell, or a photovoltaic (PV) cell, is an electrical device that converts light energy directly into electricity by the photovoltaic effect. There are different types of solar cells. Tandem solar cells could have a very good conversion efficiency in comparison with other types of solar cells. Tandem solar cells are considered the industry’s next step in photovoltaics due to their excellent conversion efficiency. A very good example is the perovskite absorber material that has been developed for efficient tandem solar cells. 
  • 78
  • 05 Mar 2024
Topic Review
Hierarchical Nanobiosensors
Nanostructures have played a key role in the development of different techniques to attack severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Some applications include masks, vaccines, and biosensors. The latter are of great interest for detecting diseases since some of their features allowed us to find specific markers in secretion samples such as saliva, blood, and even tears.
  • 72
  • 21 Feb 2024
Topic Review
Colloids in Curved Space
Self-assembly of nanoscale objects is of essential importance in materials science, condensed matter physics, and biophysics. Curvature modifies the principles and sequence of self-assembly in Euclidean space, resulting in unique and more complex structures. Understanding self-assembly behavior in curved space is not only instrumental for designing structural building blocks and assembly processes from a bottom-up perspective but is also critically important for delineating various biological systems.
  • 71
  • 11 Jan 2024
Topic Review
Types of Liquid Crystal Biosensors
Interactions between liquid crystal molecules and target analytes open up various biosensing applications for quick screening and point-of-care applications. There exist different kinds of biosensors, such as electrochemical, wearable, amperometric, potentiometric, optical, impedimetric and thermometric. Liquid crystal (LC) biosensors belong to the type of optical biosensors, which employ its anisotropy and sensitivity to external stimuli. As it is known, LCs are highly sensitive to environment changes, e.g., temperature, electric fields and surface interactions. The inherent property of LCs to respond to external stimuli gives LC biosensors a high potential to contribute to the new biosensing era. 
  • 162
  • 02 Jan 2024
Topic Review
Silicon and Silicon Carbide Recrystallization by Laser Annealing
Modifying material properties within a specific spatial region is a pivotal stage in the fabrication of microelectronic devices. Laser annealing emerges as a compelling technology, offering precise control over the crystalline structure of semiconductor materials and facilitating the activation of doping ions in localized regions. This obviates the necessity for annealing the entire wafer or device. 
  • 137
  • 29 Dec 2023
Topic Review
Navigation of Mobile Robot
Mobile robot navigation is a study area with several potential applications, both military and nonmilitary. Nonetheless, a great deal of problems remain, and many of them will probably need to be addressed using either a novel theory or another approach. The autonomous navigation of mobile robots has been studied by several researchers. Robots may encounter static interior environments or dynamic environments that change swiftly. The mobile robot’s goals may include reaching a particular place, following a predetermined course, or mapping out a space for later use. Many studies have been conducted throughout the world regarding this. Different methodologies were proposed on this topic, each with its advantages and disadvantages based on the recursive research. Navigation of a mobile robot involves determining the robot’s trajectory through an environment to reach a desired goal location while avoiding obstacles. 
  • 96
  • 29 Dec 2023
Topic Review
The Physics of Flows in a Curved Channel
Microchannels with curved geometries have been employed for many applications in microfluidic devices in the past decades. The Dean vortices generated in such geometries have been manipulated using different methods to enhance the performance of devices in applications such as mixing, droplet sorting, and particle/cell separation. Understanding the effect of the manipulation method on the Dean vortices in different geometries can provide crucial information to be employed in designing high-efficiency microfluidic devices.
  • 184
  • 25 Dec 2023
Topic Review
Yajnavalkya's 95 Years Cycle of Synchronisation
Yajnavalkya's 95 Years Cycle of Synchronisation is the model proposed by the great Indian philosopher Yajnavalkya which explains the mathematical concept of the synchronisation of the motions of the Sun and the Moon. Yajnavalkya invented the 95 years of the periodic cycle, when the solar and lunar motions get synchronised. This 95 years of the periodic cycle is also known as Yajnavalkya Cycle. 
  • 418
  • 25 Dec 2023
Topic Review
Grahan Mala
Grahan Mala is an astronomical treatise on the calculation of the dates and timings for the lunar and solar eclipses written by the Indian Astronomer Hemangad Thakur in the 16th century AD.
  • 776
  • 15 Dec 2023
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