Shape memory alloy (SMA) actuators typically exhibit limited response speed owing to the long duration required for cool down and return its natural shape compliance after electrical thermal actuation. Herein, a generic design principle harnessing mechanical instability of bistable mechanism improve properties output force SMA is proposed. The actuator presented herein constructed by combining ...

Matching the rich multimodality of natural organisms, i.e., ability to transition between crawling and swimming, walking jumping, etc., represents a grand challenge in fields soft bio-inspired robotics. Here, multimodal robot locomotion using highly compact dynamic bistable actuators is achieved. These are composed prestretched membrane sandwiched two 3D printed frames with embedded shape memor...

spinal muscular atrophy (sma) is an autosomal recessive neuromuscular disorder caused by homozygous deletion of the survival motor neuron gene 1 (smn1) in more than 90% of patients. according to the age of onset and severity of the disease, sma is classified into three groups: type i (severe), type ii (intermediate) and type iii (mild). as reported, the smn2 gene, centromeric copy gene, showed ...

This paper examines the variables inherent in the shape-changing phenomenon and suggests a new method of experimenting with shape memory alloys (SMA) to direct kinesis. This method widens the range of potential interactive applications beyond the traditional “on-off” state. The resulting flexibility permits personalization throughout the course of the transformation, enhancing the use of the ma...

Shape memory alloys (SMAs) can be used as actuators with the application of temperature gradients, altering material’s crystallographic phase while it reaches transformation temperatures, and extends macroscopically.

Two general models with hierarchical and almost degenerate neutrino masses, which are able to explain the solar and atmospheric anomalies are investigated. We show how neutrinoless double beta decay experiments discern Dirac and Majorana natures of neutrinos. The strongest result is, that almost degenerate neutrinos with masses above 0.22 eV combined with the SMA MSW must be Dirac particles. In...

the seismic performance of hybrid braces composed of steel and shape memory alloy (sma) was investigated in this paper. six types of hybrid braces were used, constituted by sma content of 0, 20, 40, 60, 80, and 100%. a nonlinear dynamic analysis was performed under el centro earthquake records, with the maximum acceleration of 0.6g and 0.9g. our results showed that the seismic performance, i.e....