Change search
Link to record
Permanent link

Direct link
BETA
Publications (10 of 104) Show all publications
Kilinc, D., Blasiak, A., Baghban, M. A., Carville, N. C., Al-Adli, A., Al-Shammari, R. M., . . . Rodriguez, B. J. (2017). Charge and topography patterned lithium niobate provides physical cues to fluidically isolated cortical axons. Applied Physics Letters, 110(5), Article ID 053702.
Open this publication in new window or tab >>Charge and topography patterned lithium niobate provides physical cues to fluidically isolated cortical axons
Show others...
2017 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 110, no 5, 053702Article in journal (Refereed) Published
Abstract [en]

In vitro devices that combine chemotactic and physical cues are needed for understanding how cells integrate different stimuli. We explored the suitability of lithium niobate (LiNbO3), a transparent ferroelectric material that can be patterned with electrical charge domains and micro/ nanotopography, as a neural substrate. On flat LiNbO3 z-surfaces with periodically alternating charge domains, cortical axons are partially aligned with domain boundaries. On submicron-deep etched trenches, neurites are aligned with the edges of the topographical features. Finally, we bonded a bicompartmental microfluidic chip to LiNbO3 surfaces patterned by etching, to create isolated axon microenvironments with predefined topographical cues. LiNbO3 is shown to be an emerging neuron culture substrate with tunable electrical and topographical properties that can be integrated with microfluidic devices, suitable for studying axon growth and guidance mechanisms under combined topographical/chemical stimuli.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2017
Keyword
Axons, Topography, Fluidic devices, Etching, Atomic force microscopy
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-203961 (URN)10.1063/1.4975304 (DOI)000394057600046 ()2-s2.0-85011317245 (Scopus ID)
Funder
Swedish Research Council, 622-2010-526Swedish Research Council, 621-2014-5407
Note

QC 20170406

Available from: 2017-03-20 Created: 2017-03-20 Last updated: 2017-11-29Bibliographically approved
Damm, S., Carville, N. C., Manzo, M., Gallo, K., Rodriguez, B. J. & Rice, J. H. (2017). Protein assemblies on ferroelectrically patterned microarrays of Ag nanoparticles. Paper presented at Joint 25th IEEE International Symposium on the Applications of Ferroelectrics (ISAF) / 13th European Conference on Application of Polar Dielectrics (ECAPD) / Piezoelectric Force Microscopy Workshop (PFM), AUG 21-25, 2016, Tech Univ Darmstadt, Darmstadt, GERMANY. Ferroelectrics (Print), 515(1), 141-148.
Open this publication in new window or tab >>Protein assemblies on ferroelectrically patterned microarrays of Ag nanoparticles
Show others...
2017 (English)In: Ferroelectrics (Print), ISSN 0015-0193, E-ISSN 1563-5112, Vol. 515, no 1, 141-148 p.Article in journal (Refereed) Published
Abstract [en]

Nano-bio interfaces play a significant role in assay device design and performance, here we study the use of a combined plasmonic and ferroelectric active substrate design for protein assemblies on a plasmon active array. We demonstrate that biotinylation and protein assemblies can bemade onmetal nanoparticles patterned on ferroelectric substrates. These results inturndemonstratethat ferroelectric substrates combined with active plasmonics is potentially applicable as substrates for biological assays.

Place, publisher, year, edition, pages
TAYLOR & FRANCIS LTD, 2017
Keyword
LiNbO3, SERS, proteins, bacteriochlorophyll, Ag, proton exchange, ferroelectric, silver nanoparticles
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-217772 (URN)10.1080/00150193.2017.1367228 (DOI)000414148100018 ()2-s2.0-85030760787 (Scopus ID)
Conference
Joint 25th IEEE International Symposium on the Applications of Ferroelectrics (ISAF) / 13th European Conference on Application of Polar Dielectrics (ECAPD) / Piezoelectric Force Microscopy Workshop (PFM), AUG 21-25, 2016, Tech Univ Darmstadt, Darmstadt, GERMANY
Note

QC 20171121

Available from: 2017-11-21 Created: 2017-11-21 Last updated: 2017-11-21Bibliographically approved
Al-Shammari, R. M., Manzo, M., Gallo, K., Rice, J. H. & Rodriguez, B. J. (2017). Tunable Wettability of Ferroelectric Lithium Niobate Surfaces: The Role of Engineered Microstructure and Tailored Metallic Nanostructures. The Journal of Physical Chemistry C, 121(12), 6643-6649.
Open this publication in new window or tab >>Tunable Wettability of Ferroelectric Lithium Niobate Surfaces: The Role of Engineered Microstructure and Tailored Metallic Nanostructures
Show others...
2017 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 121, no 12, 6643-6649 p.Article in journal (Refereed) Published
Abstract [en]

An important aspect of optimizing micro- and optofluidic devices for lab on -a-chip systems is the ability to engineer materials properties including surface structure and charge to control wettability. Biocompatible ferroelectric lithium niobate (LN), which is well-known for acoustic and nonlinear optical applications, has recently found potential micro- and optofluidic applications. However, the tunable wettability of such substrates has yet to be explored in detail. Here, we show that the contact angle of LN substrates can be reproducibly tailored between similar to 7 degrees and similar to 421 degrees by controlling the surface topography and chemistry at the nano- and micrometer scale via ferroelectric domain and polarization engineering and polarization-directed photoassisted deposition of metallic nanostructures.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC, 2017
National Category
Nano Technology
Identifiers
urn:nbn:se:kth:diva-206289 (URN)10.1021/acs.jpcc.6b12336 (DOI)000398247500026 ()
Note

QC 20170509

Available from: 2017-05-09 Created: 2017-05-09 Last updated: 2017-05-09Bibliographically approved
Zisis, G., Manzo, M., Gallo, K., Soergel, E. & Mailis, S. (2017). UV laser-induced poling inhibition in proton exchanged LiNbO3 crystals. Applied physics. B, Lasers and optics (Print), 123(4), Article ID 158.
Open this publication in new window or tab >>UV laser-induced poling inhibition in proton exchanged LiNbO3 crystals
Show others...
2017 (English)In: Applied physics. B, Lasers and optics (Print), ISSN 0946-2171, E-ISSN 1432-0649, Vol. 123, no 4, 158Article in journal (Refereed) Published
Abstract [en]

The applicability of the UV laser-induced poling inhibition method for ferroelectric domain engineering in proton exchanged lithium niobate planar waveguides is investigated. Our results indicate that intense UV irradiation of proton exchanged lithium niobate samples can, indeed, produce poling inhibited domains in this material under certain irradiation conditions. However, there is strong indication that the temperature gradient that is formed during UV irradiation modifies the local proton concentration leading to changes in the refractive index profile of the original planar waveguide.

Place, publisher, year, edition, pages
Springer, 2017
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-210499 (URN)10.1007/s00340-017-6734-7 (DOI)000402982600020 ()2-s2.0-85018866086 (Scopus ID)
Note

QC 20170705

Available from: 2017-07-05 Created: 2017-07-05 Last updated: 2017-07-05Bibliographically approved
Gallo, K., Jeong, Y., Taira, T., Jiang, S. & Ilday, F. O. (2016). Focus issue introduction: Advanced Solid-State Lasers (ASSL) 2015. Optics Express, 24(5), 5674-5682.
Open this publication in new window or tab >>Focus issue introduction: Advanced Solid-State Lasers (ASSL) 2015
Show others...
2016 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 24, no 5, 5674-5682 p.Article in journal (Refereed) Published
Abstract [en]

The editors introduce the focus issue on "Advanced Solid-State Lasers (ASSL) 2015", which is based on the topics presented at a congress of the same name held in Berlin, Germany, from October 4 to October 9, 2015. This focus issue, jointly prepared by Optics Express and Optical Materials Express, includes 23 contributed papers (17 for Optics Express and 6 for Optical Materials Express) selected from the voluntary submissions from attendees who presented at the congress and have extended their work into complete research articles. We hope this focus issue offers a good snapshot of a variety of topical discussions held at the congress and will contribute to the further expansion of the associated research areas.

Place, publisher, year, edition, pages
Optical Society of America, 2016
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-184530 (URN)10.1364/OE.24.005674 (DOI)000371435000126 ()2-s2.0-84962166667 (Scopus ID)
Note

QC 20160405

Available from: 2016-04-05 Created: 2016-04-01 Last updated: 2017-11-30Bibliographically approved
Carville, N. C., Neumayer, S. M., Manzo, M., Baghban, M.-A., Ivanov, I. N., Gallo, K. & Rodriguez, B. J. (2016). Influence of annealing on the photodeposition of silver on periodically poled lithium niobate. Journal of Applied Physics, 119(5), Article ID 054102.
Open this publication in new window or tab >>Influence of annealing on the photodeposition of silver on periodically poled lithium niobate
Show others...
2016 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 119, no 5, 054102Article in journal (Refereed) Published
Abstract [en]

The preferential deposition of metal nanoparticles onto periodically poled lithium niobate surfaces, whereby photogenerated electrons accumulate in accordance with local electric fields and reduce metal ions from solution, is known to depend on the intensity and wavelength of the illumination and the concentration of the solution used. Here, it is shown that for identical deposition conditions (wavelength, intensity, concentration), post-poling annealing for 10 h at 200 degrees C modifies the surface reactivity through the reorientation of internal defect fields. Whereas silver nanoparticles deposit preferentially on the +z domains on unannealed crystals, the deposition occurs preferentially along 180 degrees domain walls for annealed crystals. In neither case is the deposition selective; limited deposition occurs also on the unannealed -z domain surface and on both annealed domain surfaces. The observed behavior is attributed to a relaxation of the poling-induced defect frustration mediated by Li+ ion mobility during annealing, which affects the accumulation of electrons, thereby changing the surface reactivity. The evolution of the defect field with temperature is corroborated using Raman spectroscopy.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2016
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-183318 (URN)10.1063/1.4940968 (DOI)000369900600009 ()2-s2.0-84957572285 (Scopus ID)
Note

QC 20160309

Available from: 2016-03-09 Created: 2016-03-07 Last updated: 2017-11-30Bibliographically approved
Carville, N. C., Collins, L., Manzo, M., Gallo, K., Lukasz, B. I., McKayed, K. K., . . . Rodriguez, B. J. (2015). Biocompatibility of ferroelectric lithium niobate and the influence of polarization charge on osteoblast proliferation and function. Journal of Biomedical Materials Research. Part A, 103(8), 2540-2548.
Open this publication in new window or tab >>Biocompatibility of ferroelectric lithium niobate and the influence of polarization charge on osteoblast proliferation and function
Show others...
2015 (English)In: Journal of Biomedical Materials Research. Part A, ISSN 1549-3296, E-ISSN 1552-4965, Vol. 103, no 8, 2540-2548 p.Article in journal (Refereed) Published
Abstract [en]

In this work, the influence of substrate surface charge on in vitro osteoblast cell proliferation on ferroelectric lithium niobate (LN) crystal surfaces is investigated. LN has a spontaneous polarization along the z-axis and is thus characterized by positive and negative bound polarization charge at the +z and -z surfaces. Biocompatibility of LN was demonstrated via culturing and fluorescence imaging of MC3T3 osteoblast cells for up to 11 days. The cells showed enhanced proliferation rates and improved osteoblast function through mineral formation on the positively and negatively charged LN surfaces compared to electrostatically neutral x-cut LN and a glass cover slip control. These results highlight the potential of LN as a template for investigating the role of charge on cellular processes.

Place, publisher, year, edition, pages
John Wiley and Sons, 2015
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-171099 (URN)10.1002/jbm.a.35390 (DOI)000357029500004 ()25504748 (PubMedID)2-s2.0-84933674843 (Scopus ID)
Note

QC 20150720

Available from: 2015-07-20 Created: 2015-07-20 Last updated: 2017-12-04Bibliographically approved
Schepler, K. L., Jeong, Y., Jiang, S., Gallo, K., Taira, T. & Ilday, F. O. (2015). Focus issue introduction: Advanced Solid-State Lasers (ASSL) 2014. Optics Express, 23(6), 8170-8178.
Open this publication in new window or tab >>Focus issue introduction: Advanced Solid-State Lasers (ASSL) 2014
Show others...
2015 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 23, no 6, 8170-8178 p.Article in journal, Editorial material (Other academic) Published
Abstract [en]

The editors introduce the focus issue on "Advanced Solid-State Lasers (ASSL) 2014,"which is based on the topics presented at a congress of the same name held in Shanghai, China, from October 27 to November 1, 2014. This Focus issue, jointly prepared by Optics Express and Optical Materials Express, includes 28 contributed papers (21 for Optics Express and 7 for Optical Materials Express) selected from the voluntary submissions by attendees who presented at the congress and have extended their work into complete research articles. We hope this focus issue offers a useful snapshot of the variety of topical discussions held at the congress and will contribute to the further expansion of the associated research areas.

Place, publisher, year, edition, pages
Optical Society of America (OSA), 2015
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-165216 (URN)10.1364/OE.23.008170 (DOI)000351765900112 ()25837154 (PubMedID)2-s2.0-84936867102 (Scopus ID)
Note

QC 20150506

Available from: 2015-05-06 Created: 2015-04-24 Last updated: 2017-12-04Bibliographically approved
Neumayer, S. M., Ivanov, I. N., Manzo, M., Kholkin, A. L., Gallo, K. & Rodriguez, B. J. (2015). Interface and thickness dependent domain switching and stability in Mg doped lithium niobate. Journal of Applied Physics, 118(22), Article ID 224101.
Open this publication in new window or tab >>Interface and thickness dependent domain switching and stability in Mg doped lithium niobate
Show others...
2015 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 118, no 22, 224101Article in journal (Refereed) Published
Abstract [en]

Controlling ferroelectric switching in Mg doped lithium niobate (Mg: LN) is of fundamental importance for optical device and domain wall electronics applications that require precise domain patterns. Stable ferroelectric switching has been previously observed in undoped LN layers above proton exchanged (PE) phases that exhibit reduced polarization, whereas PE layers have been found to inhibit lateral domain growth. Here, Mg doping, which is known to significantly alter ferroelectric switching properties including coercive field and switching currents, is shown to inhibit domain nucleation and stability in Mg: LN above buried PE phases that allow for precise ferroelectric patterning via domain growth control. Furthermore, piezoresponse force microscopy (PFM) and switching spectroscopy PFM reveal that the voltage at which polarization switches from the "up" to the "down" state increases with increasing thickness in pure Mg: LN, whereas the voltage required for stable back switching to the original "up" state does not exhibit this thickness dependence. This behavior is consistent with the presence of an internal frozen defect field. The inhibition of domain nucleation above PE interfaces, observed in this study, is a phenomenon that occurs in Mg: LN but not in undoped samples and is mainly ascribed to a remaining frozen polarization in the PE phase that opposes polarization reversal. This reduced frozen depolarization field in the PE phase also influences the depolarization field of the Mg: LN layer above due to the presence of uncompensated polarization charge at the PE-Mg: LN boundary. These alterations in internal electric fields within the sample cause long-range lattice distortions in Mg: LN via electromechanical coupling, which were corroborated with complimentary Raman measurements.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2015
Keyword
EXCHANGED WAVE-GUIDES, PIEZORESPONSE FORCE MICROSCOPY, LINBO3 CRYSTALS; RAMAN-SPECTROSCOPY, SPECTRA, FABRICATION, SCATTERING, INVERSION, PHONONS, PHASES
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-180604 (URN)10.1063/1.4936605 (DOI)000367193100007 ()2-s2.0-84950111438 (Scopus ID)
Funder
Swedish Research Council, 622-2010-526
Note

QC 20160120

Available from: 2016-01-20 Created: 2016-01-19 Last updated: 2017-11-30Bibliographically approved
Gallo, K. & Baghban, M. A. (2015). Recent Developments on the Lithium Niobate Material Platform: The Silicon of Nonlinear Optics?. In: : . Paper presented at Advanced Solid State Lasers 2015. Optical Society of America.
Open this publication in new window or tab >>Recent Developments on the Lithium Niobate Material Platform: The Silicon of Nonlinear Optics?
2015 (English)Conference paper, Oral presentation only (Refereed)
Abstract [en]

The talk addresses current challenges and future prospects in combining nanotechnology, ferroelectric domain structuring and integrated optics in LiNbO3 materials to develop small-footprint devices for telecom and quantum optics, and potentially also life-science, applications.

Place, publisher, year, edition, pages
Optical Society of America, 2015
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-182113 (URN)10.1364/ASSL.2015.ATu3A.2 (DOI)978-1-943580-02-6 (ISBN)
Conference
Advanced Solid State Lasers 2015
Note

QC 20160307

Available from: 2016-02-15 Created: 2016-02-15 Last updated: 2016-03-07Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-7185-0457

Search in DiVA

Show all publications