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Prasongkit, Jariyanee
Publications (7 of 7) Show all publications
Prasongkit, J., Shukla, V., Grigoriev, A., Ahuja, R. & Amornkitbamrung, V. (2019). Ultrahigh-sensitive gas sensors based on doped phosphorene: A First-principles investigation. Applied Surface Science, 497, Article ID UNSP 143660.
Open this publication in new window or tab >>Ultrahigh-sensitive gas sensors based on doped phosphorene: A First-principles investigation
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2019 (English)In: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 497, article id UNSP 143660Article in journal (Other academic) Published
Abstract [en]

Recent significant advancements have been made in demonstrating the usage of phosphorene to detect the presence of gases leading to a new breed of gas sensor device. Based on pristine phosphorene, the devices can detect a small concentration of adsorbed molecules with high sensitivity at room temperature. In this work, we propose doping silicon and sulfur impurity atoms into phosphorene to drastically improve its gas sensing performance. We use a combination of density functional theory and non-equilibrium Green's function method to evaluate the sensitivity and selectivity of doped phosphorene nanosensors for four gases (NO, NO2, NH3, and CO). Both devices demonstrate a prominent distinction in conductance when the gas molecules are exposed to the sensor surface. We suggest the doped phosphorene may present advantages over the device based purely on phosphorene due to the ability to discriminate different gases controlled by types of dopants.

National Category
Condensed Matter Physics
Identifiers
urn:nbn:se:uu:diva-372109 (URN)10.1016/j.apsusc.2019.143660 (DOI)000487849800050 ()
Available from: 2019-01-05 Created: 2019-01-05 Last updated: 2019-10-25Bibliographically approved
Prasongkit, J., Grigoriev, A. & Ahuja, R. (2013). Mechano-switching devices from carbon wire-carbon nanotube junctions. Physical Review B. Condensed Matter and Materials Physics, 87(15), 155434-155442
Open this publication in new window or tab >>Mechano-switching devices from carbon wire-carbon nanotube junctions
2013 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 87, no 15, p. 155434-155442Article in journal (Refereed) Published
Abstract [en]

Well-known conductive molecular wires, such as cumulene or polyyne, provide a model for interconnectingmolecular electronics circuits. In recent experiments, the appearance of carbon wire bridging between twodimensional electrodes, i.e., graphene sheets, was observed [C. Jinet al.,Phys. Rev. Lett.102, 205501 (2009)], thusdemonstrating a mechanical way of producing cumulene. In this work, we studied the structure and conductanceof carbon wire suspended between carbon nanotubes (CNTs) of different chiralities (zigzag and armchair), andcorresponding conductance variation upon stretching. We found that the geometric structure of the carbon wirebridging CNTs was similar to the experimentally observed structures in carbon wire obtained between grapheneelectrodes. We show a way to modulate conductance by changing bridging sites between carbon wire and CNTswithout breaking the wire. Observed current modulation via cumulene wire stretching or elongation together withCNT junction stability makes this a promising candidate for use in mechano-switching devices for molecularnanoelectronics.

Place, publisher, year, edition, pages
APS, 2013
National Category
Condensed Matter Physics
Identifiers
urn:nbn:se:uu:diva-198849 (URN)10.1103/PhysRevB.87.155434 (DOI)000318177600005 ()
Projects
KoF U3MEC
Available from: 2013-04-26 Created: 2013-04-26 Last updated: 2017-12-06Bibliographically approved
Prasongkit, J., Grigoriev, A., Pathak, B., Ahuja, R. & Scheicher, R. H. (2013). Theoretical Study of Electronic Transport through DNA Nucleotides in a Double-Functionalized Graphene Nanogap. The Journal of Physical Chemistry C, 117(29), 15421-15428
Open this publication in new window or tab >>Theoretical Study of Electronic Transport through DNA Nucleotides in a Double-Functionalized Graphene Nanogap
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2013 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 117, no 29, p. 15421-15428Article in journal (Refereed) Published
Abstract [en]

Graphene nanogaps and nanopores show potential for the purpose of electrical DNA sequencing, in particular because single-base resolution appears to be readily achievable. Here, we evaluated from first principles the advantages of a nanogap setup with functionalized graphene edges. To this end, we employed density functional theory and the non-equilibrium Green's function method to investigate the transverse conductance properties of the four nucleotides occurring in DNA when located between opposing functionalized graphene electrodes. In particular, we determined the electrical tunneling current variation as a function of the applied bias and analyzed the associated differential conductance at a voltage which appears suitable to distinguish between the four nucleotides. Intriguingly, we predict for one of the nucleotides (deoxyguanosine monophosphate) a negative differential resistance effect.

National Category
Natural Sciences
Identifiers
urn:nbn:se:uu:diva-208163 (URN)10.1021/jp4048743 (DOI)000322503600064 ()
Available from: 2013-09-24 Created: 2013-09-24 Last updated: 2017-12-06Bibliographically approved
Pathak, B., Löfås, H., Prasongkit, J., Grigoriev, A., Ahuja, R. & Scheicher, R. H. (2012). Double-functionalized nanopore-embedded gold electrodes for rapid DNA sequencing. Applied Physics Letters, 100(2), 023701
Open this publication in new window or tab >>Double-functionalized nanopore-embedded gold electrodes for rapid DNA sequencing
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2012 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 100, no 2, p. 023701-Article in journal (Refereed) Published
Abstract [en]

We have studied the effect of double-functionalization on gold electrodes for improving nanopore-based DNA sequencing. The functionalizing molecular probes are, respectively, capable of temporarily forming hydrogen bonds with both the nucleobase part and the phosphate group of the target DNA, thus potentially minimizing the structural fluctuations of a single-stranded DNA molecule passing between the gold electrodes. The results of our first-principles study indicate that the proposed setup yields current signals that differ by at least 1 order of magnitude for the four different nucleic acid bases, thus offering the possibility to electrically distinguish them.

National Category
Physical Sciences
Identifiers
urn:nbn:se:uu:diva-168591 (URN)10.1063/1.3673335 (DOI)000299126800091 ()
Available from: 2012-02-14 Created: 2012-02-13 Last updated: 2017-12-07Bibliographically approved
Prasongkit, J., Grigoriev, A., Wendin, G. & Ahuja, R. (2011). Interference effects in phtalocyanine controlled by H-H tautomerization: Potential two-terminal unimolecular electronic switch. Physical Review B Condensed Matter, 84(16), 165437
Open this publication in new window or tab >>Interference effects in phtalocyanine controlled by H-H tautomerization: Potential two-terminal unimolecular electronic switch
2011 (English)In: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 84, no 16, p. 165437-Article in journal (Refereed) Published
Abstract [en]

We investigate the electrical transport properties of two hydrogen tautomer configurations of phthalocyanine (H2Pc) connected to cumulene and gold leads. Hydrogen tautomerization affects the electronic state of H2Pc by switching the character of molecular orbitals with the same symmetry close to the Fermi level. The near degeneracy between the HOMO and HOMO-1 leads to pronounced interference effects, causing a large change in current for the two tautomer configurations, especially in the low-bias regime. Two types of planar junctions are considered: cumulene-H2Pc-cumulene and gold-H2Pc-gold. Both demonstrate a prominent difference in molecular conductance between ON and OFF states. In addition, junctions with gold leads show pronounced negative differential resistance (NDR) at high bias voltage, as well as weak NDR at intermediate bias.

National Category
Condensed Matter Physics
Identifiers
urn:nbn:se:uu:diva-160466 (URN)10.1103/PhysRevB.84.165437 (DOI)000296371200009 ()
Projects
KoF U3MEC
Available from: 2011-10-24 Created: 2011-10-24 Last updated: 2017-12-08Bibliographically approved
Prasongkit, J. (2011). Molecular Electronics: Insight from Ab-Initio Transport Simulations. (Doctoral dissertation). Uppsala: Acta Universitatis Upsaliensis
Open this publication in new window or tab >>Molecular Electronics: Insight from Ab-Initio Transport Simulations
2011 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis presents the theoretical studies of electronic transport in molecular electronic devices. Such devices have been proposed and investigated as a promising new approach that complements conventional silicon-based electronics. To design and fabricate future nanoelectronic devices, it is essential to understand the conduction mechanism at a molecular or atomic level. Our approach is based on the non-equilibrium Green's function method (NEGF) combined with density functional theory (DFT). We apply the method to study the electronic transport properties of two-probe systems consisting of molecules or atomic wires sandwiched between leads. A few molecular electronic devices are characterized; namely, conducting molecular wires, molecular switches and molecular recognition sensors. The considered applications are interconnection of different nanoelectronic units with cumulene molecular wires; adding switching functionality to the molecular connectors by applying stress to the CNT-cumulene-CNT junction or by introducing phthalocyanine unit; sensing of individual nucleotides, e.g., for DNA sequencing applications. The obtained results provide useful insights into the electron transport properties of molecules. Several interesting and significant features are analyzed and explained in particular such as, level pinning, negative differential resistance, interfering of conducting channels etc.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2011. p. 67
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 875
Keywords
Molecular Electronics, Ab Initio, DNA Sequencing, Nanoscience, Graphene
National Category
Condensed Matter Physics
Research subject
Physics with spec. in Atomic, Molecular and Condensed Matter Physics
Identifiers
urn:nbn:se:uu:diva-160474 (URN)978-91-554-8208-4 (ISBN)
Public defence
2011-12-08, Å80101, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 10:15 (English)
Opponent
Supervisors
Available from: 2011-11-17 Created: 2011-10-24 Last updated: 2014-01-27Bibliographically approved
Prasongkit, J., Grigoriev, A., Scheicher, R. & Ahuja, R. (2010). Transport properties of nucleotides in a graphene nanogap for DNA sequencing. In: ElecMol’10 5th International Meeting on Molecular Electronics December 6-10, 2010. Paper presented at Elecmol'10: 5th International Meeting On Molecular Electronic; 6-10 Dec 2010; Grenoble, France (pp. 86-86).
Open this publication in new window or tab >>Transport properties of nucleotides in a graphene nanogap for DNA sequencing
2010 (English)In: ElecMol’10 5th International Meeting on Molecular Electronics December 6-10, 2010, 2010, p. 86-86Conference paper, Oral presentation only (Other academic)
National Category
Condensed Matter Physics Biochemistry and Molecular Biology
Research subject
Physics with spec. in Atomic, Molecular and Condensed Matter Physics; Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-173541 (URN)
Conference
Elecmol'10: 5th International Meeting On Molecular Electronic; 6-10 Dec 2010; Grenoble, France
Projects
KoF U3MEC
Available from: 2013-04-11 Created: 2012-04-26 Last updated: 2013-04-11Bibliographically approved
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