With the growing number of Wireless Sensor Network (WSN) monitoring systems in outdoor environments, smart sensing capability has attracted great research interests recently: scientists and researchers expect long-term healthy systems running in harsh environments. Because of the environmental damages to less-protected sensors, a sensing component, is highly desirable to be robust and faithful ...

The appearance of smart mobile devices with communication, computation, and sensing capability and increasing popularity of various mobile applications have caused the explosion of mobile data recently. In the same time, mobile big data sensing has been emerging as a new sensing paradigm where vast numbers of mobile devices are used for sensing and collecting huge amounts of mobile data in citi...

Cognitive radio arises as a hot research issue in wireless communications recently, attributed to its capability of enhancing spectral efficiency and catering for the growing demand for bandwidth. As a good embodiment of cognitive radio’s unique feature, i.e. making use of every bit spectral resource, spectrum sensing plays a vital role in the implementation of cognitive radio. To alleviate neg...

In this paper, unique surface sensing property and enhanced sensitivity in microring resonator biosensors based on subwavelength grating (SWG) waveguides are studied and demonstrated. The SWG structure consists of periodic silicon pillars in the propagation direction with a subwavelength period. Effective sensing region in the SWG microring resonator includes not only the top and side of the wa...

Starting from human “sense of touch,” this paper 3 reviews the state of tactile sensing in humanoid robotics. The phys4 iology, coding, and transferring tactile data and perceptual impor5 tance of the “sense of touch” in humans are discussed. Following 6 this, a number of design hints derived for robotic tactile sensing are 7 presented. Various technologies and transduction methods used to 8 im...

Although biochemical sensing using liquid crystals (LC) has been demonstrated, relatively little attention has been paid towards the fabrication of in situ-formed LC sensing devices. Herein, we demonstrate a highly reproducible method to create uniform LC thin film on treated substrates, as needed, for LC sensing. We use shear forces generated by the laminar flow of aqueous liquid within a micr...

Ocean colour remote sensing has supported research on subjects ranging from marine ecosystems to climate change for almost 35 years. However, as the framework for ocean colour remote sensing is based on the radiation intensity at the top-of-atmosphere (TOA), the polarisation of the radiation, which contains additional information on atmospheric and water optical properties, has largely been neg...

Compressive sensing-based synthetic aperture radar (SAR) imaging has shown its superior capability in high-resolution image formation. However, most of those works focus on the scenes that can be sparsely represented in fixed spaces. When dealing with complicated scenes, these fixed spaces lack adaptivity in characterizing varied image contents. To solve this problem, a new compressive sensing-...

In some Wireless Sensor Network (WSN) deployments, nodes may be used for different purposes (sensing, data pre-processing, actuation, etc.). Even if such a network is organised into clusters, this creates heterogeneity in terms of energy capability, which needs to be managed and balanced in order to ensure proper sensing capability with maximised lifespan. In this paper, we present Routing base...

DNA-stabilized silver clusters (Ag-DNA) show excellent promise as a multi-functional nanoagent for molecular investigations in living cells. The unique properties of these fluorescent nanomaterials allow for intracellular optical sensors with tunable cytotoxicity based on simple modifications of the DNA sequences. Three Ag-DNA nanoagent designs are investigated, exhibiting optical responses to ...