David Valenzuela
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View article: Integration of Porous Graphene and 3D-printed Piezopolymer for Flexible Ultrasound Transducers
Integration of Porous Graphene and 3D-printed Piezopolymer for Flexible Ultrasound Transducers Open
Ultrasound technology is crucial in diagnostic imaging, making it widely used in medical applications. However, traditional ultrasound transducers face limitations in flexibility and ease of fabrication, leading to the exploration of thin-…
View article: Strained Graphene as Pristine Graphene with a Deformed Momentum Operator
Strained Graphene as Pristine Graphene with a Deformed Momentum Operator Open
We explore the equivalence between the low-energy dynamics of strained graphene and a quantum mechanical framework for the 2D Dirac equation in flat space with a deformed momentum operator. By considering some common forms of the anisotrop…
View article: Integration of Porous Graphene and 3d-Printed Piezopolymer for Wearable Ultrasound Transducers
Integration of Porous Graphene and 3d-Printed Piezopolymer for Wearable Ultrasound Transducers Open
View article: Non-relativistic representation of the Jackiw-Rebbi soliton
Non-relativistic representation of the Jackiw-Rebbi soliton Open
We consider the Foldy-Whouthuysen (FW) transformation of the Dirac equation coupled to a background soliton field which is equivalent to a position-dependent massm(x) such that at each limit x → ±∞, the mass to the left and to the right te…
View article: Catalysis and inverse electric catalysis in a scalar theory
Catalysis and inverse electric catalysis in a scalar theory Open
In this article we explore the phase diagram associated to the symmetry\nbreaking of a scalar self interacting theory, induced by temperature and the\npresence of an external electric field. For such purpose, first we obtain the\nboson pro…
View article: Critical behavior for point monopole and dipole electric impurities in uniformly and uniaxially strained graphene
Critical behavior for point monopole and dipole electric impurities in uniformly and uniaxially strained graphene Open
We revisit the problem of bound states in graphene under the influence of\npoint electric monopole and dipole impurity potentials extended to the case in\nwhich the membrane of this material is uniformly and uniaxially strained, which\nlea…
View article: Magnetic renormalons in a scalar self-interacting <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>λ</mml:mi><mml:msup><mml:mrow><mml:mi>ϕ</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math> theory
Magnetic renormalons in a scalar self-interacting theory Open
We present an analysis about the influence of an external magnetic field on renormalons in a self interacting theory $\lambda \phi ^{4}$. In the weak magnetic field region, using an appropriate expansion for the Schwinger propagator's, we …
View article: Atomic collapse in graphene: lost of unitarity
Atomic collapse in graphene: lost of unitarity Open
We explore the problem of atomic collapse in graphene due to monopole impurities, both electric and magnetic, within the context of supersymmetric quantum mechanics. For electric impurities, upon factorizing the radial Dirac Hamiltonian an…