Piezoelectric actuators (PEAs) have been widely used in micro- and nanopositioning applications due to their fine resolution, rapid responses, and large actuating forces. However, a major deficiency of PEAs is that their accuracy is seriously limited by hysteresis. This paper presents adaptive model predictive control technique for reducing hysteresis in PEAs based on autoregressive exogenous m...

The growing use of wearable devices has been stimulating research efforts in the development energy harvesters as more portable and practical sources alternatives. field piezoelectric nanogenerators (PENGs) triboelectric (TENGs), especially employing zinc oxide (ZnO) nanowires (NWs), greatly flourished recent years. Despite its modest coefficient, ZnO is very attractive due to sustainable raw m...

Energy harvesters serve as continuous and long-lasting sources of energy that can be integrated into wearable implantable sensors biomedical devices. This review paper presents the current progress, challenges, advantages, disadvantages future trends which harvest from various human body. The most used types are chemical; thermal biomechanical each group is represented by several nano-generator...

To date, quite a few wearable electronics have entered the market, which are changing the life pattern of consumers. However, the limited lifetime and energy storage capacity have made rechargeable batteries the bottleneck in wearable technology, especially with the increase of number of wearable devices and their large distribution. To solve this problem, we demonstrate a woven-structured trib...

In this paper, a novel flexible nanogenerator (FNG) made of zinc-oxide (ZnO) nanoparticles (NPs) and multiwall-carbon nanotubes (MW-CNTs) is presented. In this structure, ZnO NPs and MW-CNTs are mixed with polydimethylsiloxane (PDMS) uniformly to form an entire flexible nanogenerator. Serial tests illustrate that the output voltage and power density are as high as 7.5 V and 18.75 μW per cycle, ...

Nanogenerators were first demonstrated by deflecting aligned ZnO nanowires using a conductive atomic force microscopy (AFM) tip. The output of a nanogenerator is affected by three parameters: tip normal force, tip scanning speed, and tip abrasion. In this work, systematic experimental studies have been carried out to examine the combined effects of these three parameters on the output, using st...

We demonstrated a flexible self-powered system that consists of a strain sensor and a nanogenerator. An individual ZnSnO3 microbelt was bonded at its ends to a polyethylene terephthalate (PET) substrate to fabricate a strain sensor and a single-nanobelt nanogenerator. The sensor and nanogenerator were connected in series and packaged by a polydimethylsiloxane (PDMS) layer. The ZnSnO3 belongs to...

The current study investigated the fabrication of multi-walled carbon nanotubes (MWCNTs) adhering to Barium titanate (BaTiO3) nanoparticles and poly(vinylidene fluoride) (PVDF) nanocomposites, as well impact MWCNT on PVDF-BaTiO3 matrix in terms dielectric constant loss with a view develop high performance piezoelectric energy harvester future. capacity potential as-prepared nanocomposite films ...