Development of electric control catheter and tweezers for thrombosis sample in blood vessels using piezoelectric polymeric fibers

Tajitsu, Yoshiro

doi:10.1002/pat.817

Cited by 59 publications

(67 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In accordance with previous papers [11][12][13], we formed rectangular electrodes on the surface of the northern hemisphere of the PLLA fiber by vacuum deposition, as shown in Fig. 3.…”

Section: Samplementioning

confidence: 52%

Basic Study of Controlling Piezoelectric Motion of Chiral Polymeric Fiber

Tajitsu

2009

Ferroelectrics

View full text Add to dashboard Cite

We studied a novel technique for electrically controlling the piezoelectric motion of the fiber of poly-(L-lactic acid) (PLLA), which is a type of chiral polymer. A PLLA fiber (30 µm diameter) drawn seven times with a piezoelectric constant of 25 pC/N was prepared. First, it was reported that a bending motion due to the shear piezoelectricity of the PLLA fiber can be basically controlled by applying an electric field. Then, it was found that the targeting piezoelectric actuator that we used to study the tip motion of the free end of PLLA fibers whose other end was fixed, could be moved in a zig-zag pattern on a straight line, and/or along an ellipsoidal orbit, by the application of an electric field.

show abstract

“…In accordance with previous papers [11][12][13], we formed rectangular electrodes on the surface of the northern hemisphere of the PLLA fiber by vacuum deposition, as shown in Fig. 3.…”

Section: Samplementioning

confidence: 52%

Basic Study of Controlling Piezoelectric Motion of Chiral Polymeric Fiber

Tajitsu

2009

Ferroelectrics

View full text Add to dashboard Cite

show abstract

“…From a mesoscopic viewpoint, wood materials and films or fibers made of PLLA have a macro-symmetry of  D in common (Fukada, 1955, 2005, Tajitsu, 2006, 2008, where the only electroelastic coupling is the coupling between the shear deformation in the plane parallel to the  -fold rotation axis and the electric poling perpendicular to the sheared plane, as shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

“…Both materials exhibit piezoelectricity (Fukada, 1955(Fukada, , 1991. The piezoelectricity of wood has been used in nondestructive evaluation (NDE) techniques (Galligan and Bertholf, 1963, Smetana and Kelso, 1971, Knuffel and Pizzi, 1986, Knuffel, 1988, Nakai et al, 2004, 2006. The piezoelectricity of PLLA has been used to develop human-machine interfaces (HMIs) for informational devices (Ando et al, 2012(Ando et al, , 2013 and surgical instruments, such as microtweezers and catheters , 2005, Tajitsu, 2006, 2008.…”

Section: Introductionmentioning

confidence: 99%

Electroelastic field in a piezoelectric solid cylinder with D<sub>∞</sub> symmetry subjected to transverse mechanical load

Ootao

Kameo

2017

Mechanical Engineering Journal

View full text Add to dashboard Cite

Electroelastic field in a piezoelectric solid cylinder with D ∞ symmetry subjected to transverse mechanical load Abstract For the safe operation of devices comprised of bodies with D ∞ symmetry, the electroelastic field in a solid cylinder subjected to a non-axisymmetric surface load of radial and circumferential stresses was investigated. The analytical technique constructed previously, the Fourier integral technique with respect to the axial coordinate, and the Fourier series technique with respect to the circumferential coordinate were employed. Then the three-dimensional distributions of the electroelastic field quantities, such as displacement, electric potential, electric field, strain, stress, and electric displacement, were determined. In addition, the resultant forces and moments on the axial section were formulated. Using numerical calculations assuming health monitoring or NDE techniques, it was found that the structures of the electroelastic field were dependent on the composition of the combined load even when the integrated effect of the combined load was constant and that the detailed three-dimensional analyses were absolutely significant. Then, the primary coupling behavior in the D ∞ bodies was investigated for health monitoring, and it was found that the stress-strain relationship was substantially elastic but the developed electric displacement was affected by both of the piezoelectric and dielectric effects comparably and that the coupled analyses were also significant. Moreover, an elementary methodology to decompose the combined load into components was suggested and was successfully implemented for a concrete example.

show abstract

“…composed of PLLA require analytical solutions to the relevant electroelastic problems, because they are some of the few tools that can reveal the field quantities within such bodies. Motivated by these requirements, some researchers have been approaching the relevant electroelastic problems from the mesoscopic viewpoint in which both wooden materials and films or fibers made of PLLA have a macrosymmetry of  D in common (Fukada, 1955, Ando, et al, 2012, 2013, Tajitsu, et al, 2004, 2005, Tajitsu, 2006, 2008.  D symmetry is characterized by an  -fold rotation axis and a two-fold rotation axis perpendicular to it (Kim, 1999).…”

Section: Introductionmentioning

confidence: 99%

“…From the viewpoint of engineering production, wood and poly-L-lactic acid (PLLA) are two of the most promising candidates for achieving these aims. Wood, which was found to be piezoelectric by Fukada (1955), has been the subject of electroelastic problems aimed at developing nondestructive evaluation (NDE) techniques (Galligan and Bertholf, 1963, Smetana and Kelso, 1971, Knuffel and Pizzi, 1986, Knuffel, 1988, Nakai, et al, 2004, 2006. On the other hand, PLLA is expected to be employed in human-machine interfaces (HMIs) for devices such as smart phones, tablet computers, and gaming devices (Ando, et al, 2012(Ando, et al, , 2013 and also in surgical instruments such as microtweezers and catheters (Tajitsu, et al, 2004, 2005, Tajitsu, 2006, 2008.…”

Section: Introductionmentioning

confidence: 99%

Thermoelectroelastic response of a piezoelectric cylinder with D<sub>∞</sub> symmetry under axisymmetric mechanical and thermal loading

Ootao

Kameo

Saito

2017

Mechanical Engineering Journal

View full text Add to dashboard Cite

Carbon-neutral and biodegradable materials such as wood and poly-L-lactic acid play an important role in reducing environmental loads. Therefore, this study theoretically analyzed the thermoelectroelastic problem for a solid cylinder with D ∞ symmetry subjected to a distributed torsional shear stress as a mechanical input and to a nonuniform temperature distribution as a thermal disturbance, in order to gain an elementary understanding of the thermal effects on the electroelastic field in cylindrical bodies with D ∞ symmetry. The displacement components are expressed in terms of the elastic displacement potential function, the piezoelastic displacement potential function, and the thermoelastic displacement potential functions, and the electric field components are expressed in terms of the electric potential function. Subsequent to presenting the fundamental equations for thermoelectroelasticity, the governing equations for the above potential functions are derived based on the above fundamental equations. These governing equations are solved by a Fourier transform technique, and the theoretical solutions of the thermoelectroelastic field quantities are obtained. Furthermore, by performing numerical calculations, the distributions of the field quantities are illustrated graphically, and the structures of the thermoelectroelastic field are discussed qualitatively and quantitatively. Moreover, by quantitatively evaluating the ratio of the thermally disturbed electric displacement to the undisturbed electric displacement reflecting the mechanical input, the necessity of the thermoelectroelastic analyses, as treated in this paper, is clearly demonstrated.

show abstract

Development of electric control catheter and tweezers for thrombosis sample in blood vessels using piezoelectric polymeric fibers

Cited by 59 publications

References 8 publications

Basic Study of Controlling Piezoelectric Motion of Chiral Polymeric Fiber

Basic Study of Controlling Piezoelectric Motion of Chiral Polymeric Fiber

Electroelastic field in a piezoelectric solid cylinder with D<sub>∞</sub> symmetry subjected to transverse mechanical load

Thermoelectroelastic response of a piezoelectric cylinder with D<sub>∞</sub> symmetry under axisymmetric mechanical and thermal loading

Contact Info

Product

Resources

About