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Journal articles on the topic 'Lifted-off films'

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1

Fan, J. C., C. P. Lee, C. M. Tsai, S. Y. Wang, and J. S. Tsang. "Optical and structural properties of epitaxially lifted-off GaAs films." Journal of Applied Physics 83, no. 1 (January 1998): 466–68. http://dx.doi.org/10.1063/1.366662.

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2

Jiang, De-Sheng, Xue-Ping Li, Bao-Quan Sun, and He-Xiang Han. "A Raman scattering study of GaAs : As films lifted off GaAs substrate." Journal of Physics D: Applied Physics 32, no. 6 (January 1, 1999): 629–31. http://dx.doi.org/10.1088/0022-3727/32/6/005.

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3

Mateo, Cherry May N., Alipio T. Garcia, Flo Rykiel M. Ramos, Kristine I. Manibog, and Arnel A. Salvador. "Strain-induced splitting of the valence band in epitaxially lifted-off GaAs films." Journal of Applied Physics 101, no. 7 (April 2007): 073519. http://dx.doi.org/10.1063/1.2716869.

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4

Slaughter, Liane S., Kevin M. Cheung, Sami Kaappa, Huan H. Cao, Qing Yang, Thomas D. Young, Andrew C. Serino, et al. "Patterning of supported gold monolayers via chemical lift-off lithography." Beilstein Journal of Nanotechnology 8 (December 8, 2017): 2648–61. http://dx.doi.org/10.3762/bjnano.8.265.

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The supported monolayer of Au that accompanies alkanethiolate molecules removed by polymer stamps during chemical lift-off lithography is a scarcely studied hybrid material. We show that these Au–alkanethiolate layers on poly(dimethylsiloxane) (PDMS) are transparent, functional, hybrid interfaces that can be patterned over nanometer, micrometer, and millimeter length scales. Unlike other ultrathin Au films and nanoparticles, lifted-off Au–alkanethiolate thin films lack a measurable optical signature. We therefore devised fabrication, characterization, and simulation strategies by which to inte
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5

Ren, Fang, Bingyao Liu, Zhaolong Chen, Yue Yin, Jingyu Sun, Shuo Zhang, Bei Jiang, et al. "Van der Waals epitaxy of nearly single-crystalline nitride films on amorphous graphene-glass wafer." Science Advances 7, no. 31 (July 2021): eabf5011. http://dx.doi.org/10.1126/sciadv.abf5011.

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Van der Waals epitaxy provides a fertile playground for the monolithic integration of various materials for advanced electronics and optoelectronics. Here, a previously unidentified nanorod-assisted van der Waals epitaxy is developed and nearly single-crystalline GaN films are first grown on amorphous silica glass substrates using a graphene interfacial layer. The epitaxial GaN-based light-emitting diode structures, with a record internal quantum efficiency, can be readily lifted off, becoming large-size flexible devices. Without the effects of the potential field from a single-crystalline sub
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6

Kim, Sunjung. "Effect of Residual Stress of Thin and Thick Layers on Laser Lifted-Off Light Emitting Diodes." Journal of The Electrochemical Society 158, no. 9 (2011): H904. http://dx.doi.org/10.1149/1.3610360.

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7

Tay, L., N. L. Rowell, D. Poitras, J. W. Fraser, D. J. Lockwood, and R. Boukherroub. "Bovine serum albumin adsorption on passivated porous silicon layers." Canadian Journal of Chemistry 82, no. 10 (October 1, 2004): 1545–53. http://dx.doi.org/10.1139/v04-129.

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Hydrogen-terminated porous silicon (pSi-H) films were fabricated through electrochemical anodization of crystalline silicon in hydrofluoric-acid-based solutions. The pSi-H surface was chemically functionalized by thermal reaction with undecylenic acid to produce an organic monolayer covalently attached to the silicon surface through Si—C bonds and bearing an acid terminal group. Bovine serum albumin (BSA) was adsorbed onto such surface-modified pSi structures. The resulting surfaces were characterized using scanning electron microscopy (SEM), reflection FT-IR spectroscopy, and ellipsometry. SE
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8

Chen, You, Zijing Quan, Yuhan Sun, Deqiang Chi, Delei Liu, Liang Zhou, Junqiu Zhang, et al. "Durable and Superhydrophobic Aluminium Alloy with Microscale Hierarchical Structures and Anti-Drag Function Inspired by Diving Bell Spider." Coatings 11, no. 10 (September 22, 2021): 1146. http://dx.doi.org/10.3390/coatings11101146.

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Coating materials with special surface wettability are widely applied in marine paint systems used in the naval industry to reduce the corrosion and viscous drag of seawater. However, traditional coatings are inefficient and limited, either by poor durability or insufficient anti-drag capacity. Here, inspired by the diving bell spider, a bionic superhydrophobic coating with multiscale hierarchical architecture was successfully prepared on the surface of aluminium alloy. It possesses excellent mechanical abrasion durability, chemical durability, and low adhesion. Remarkably, the water contact a
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9

Ramadan, Rehab, Vicente Torres-Costa, and Raúl J. Martín-Palma. "Fabrication of Zinc Oxide and Nanostructured Porous Silicon Composite Micropatterns on Silicon." Coatings 10, no. 6 (May 30, 2020): 529. http://dx.doi.org/10.3390/coatings10060529.

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The luminescent properties of zinc oxide (ZnO) and nanostructured porous silicon (PSi) make these materials very appealing for photoemission applications. The current study reports on the fabrication of a composite of ZnO and nanostructured porous silicon micropatterns (ZnO + PSi micropatterns) onto heavily-doped silicon surfaces. The proposed composite micropattern is devoted to the future development of light-emitting diodes. The fabrication of the ZnO + PSi micropatterns was carried out in a two–step process. (1) A regular hexagonal micropattern of a photoresist/ZnO stack was fabricated by
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10

Wu, Junwen, Wenfeng Jia, and Chenggang Xian. "Foaming Agent Developed for Gas Wells with Liquid Loading Problem Using New Surfactant and Nanotechnology." SPE Journal 25, no. 06 (July 13, 2020): 3138–44. http://dx.doi.org/10.2118/201249-pa.

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Summary Liquid buildup in the wellbore is one of the major causes of production decline in gas wells, in which case additional energy is needed to drain off the liquid to solve this problem. Foaming agents offer a method to reduce the liquid density to make it easier to be lifted with the gas flow, unloading the accumulated liquid in gas wells. The main ingredient of foaming agents are surfactants. Foam stability is influenced by several factors, such as salinity, temperature, and pressure, so a foaming stabilizer is usually needed for a foam system. A foaming agent should be developed to form
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11

Kempa, Stefan, Wolfgang Friz, Florian Gaul, Ellen Habig, Laurence J. Gregoriades, and Roger Massey. "Investigation of a Proactive Glass Filler Removal in IC Substrate Build Up Films and its Effect on Topography and Copper Adhesion Reliability." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2019, DPC (January 1, 2019): 000453–73. http://dx.doi.org/10.4071/2380-4491-2019-dpc-presentation_tp2_037.

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Across all areas within the electronics industry, there is a general trend to push for a smaller footprint and reduce unit size where ever possible. Printed Circuit Board (PCB) production is not exempt from this trend and one of the major challenges facing the industry is the drive to produce an ever increasing interconnect density. While there is a wide range of dielectric materials available to PCB designers, due to their well-balanced properties, the materials of choice often remain those based on epoxy based resins. However for high end applications, where the ability to produce interconne
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12

Dalberth, M. J., J. C. Price, and C. T. Rogers. "Epitaxial lift-off of strontium titanate thin films and the temperature dependence of the low frequency dielectric properties of the films." MRS Proceedings 493 (1997). http://dx.doi.org/10.1557/proc-493-371.

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ABSTRACTUsing pulsed laser ablation, we have grown epitaxial bilayers of strontium titanate (STO) and yttrium barium copper oxide (YBCO) on lanthanum aluminate (LAO) and neodymium gallate (NGO) substrates. Using a selective acid etch, we have removed the YBCO from the middle of the bilayer and lifted off the strontium titanate films from their parent substrates. Using coplanar interdigital capacitors patterned on the films' surface, we have measured the dielectric constant and loss as a function of frequency and temperature and have resolved frequency dependent loss peaks which indicate therma
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13

Posthill, J. B., D. P. Malta, T. P. Humphreys, G. C. Hudson, R. E. Thomas, R. A. Rudder, and R. J. Markunas. "Fabrication of a Free-Standing, Synthetic, Single Crystal Diamond Plate Using Ion Implantation and Plasma-Enhanced Chemical Vapor Deposition." MRS Proceedings 388 (1995). http://dx.doi.org/10.1557/proc-388-299.

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AbstractUsing a specific combination of energetic and chemical processes we have grown homoepitaxial diamond on and lifted it off of a type Ia natural C(100) crystal. Before growth, the C(100) crystal is exposed to a self implant of 190keV energy and dose of 1E16 cm-2. Low temperature (~600°C) homoepitaxial diamond growth conditions were used that are based on water-alcohol source chemistries. To achieve layer separation (lift-off), samples were annealed to a temperature sufficient to graphitize the buried implant-damaged region. Contactless electrochemical etching was found to remove the grap
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14

Zhang, Bowen, Chao Yun, and Judith L. MacManus-Driscoll. "High Yield Transfer of Clean Large-Area Epitaxial Oxide Thin Films." Nano-Micro Letters 13, no. 1 (January 2021). http://dx.doi.org/10.1007/s40820-020-00573-4.

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AbstractIn this work, we have developed a new method for manipulating and transferring up to 5 mm × 10 mm epitaxial oxide thin films. The method involves fixing a PET frame onto a PMMA attachment film, enabling transfer of epitaxial films lifted-off by wet chemical etching of a Sr3Al2O6 sacrificial layer. The crystallinity, surface morphology, continuity, and purity of the films are all preserved in the transfer process. We demonstrate the applicability of our method for three different film compositions and structures of thickness ~ 100 nm. Furthermore, we show that by using epitaxial nanocom
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15

Dalberth, M. J., J. C. Price, and C. T. Rogers. "Dielectric Response of free Standing Strontium Titanate Thin Films from 10 Khz to 1 Ghz as A Function of Temperature and Applied Voltage." MRS Proceedings 574 (1999). http://dx.doi.org/10.1557/proc-574-299.

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AbstractUsing pulsed laser ablation, we have grown epitaxial bilayers of strontium titanate (STO) and yttrium barium copper oxide (YBCO) on (110) neodymium gallate (NGO) substrates. Using a selective acid etch, we have removed the YBCO from the middle of the bilayer and lifted off the STO films from their parent substrates. Using coplanar interdigital capacitors patterned on the surface of the films, we have measured the capacitance and loss as a function of frequency (from 10 kHz to 1 GHz), temperature (from 300 K to 4 K), and applied electric field (up to roughly 2 V/μm). We have seen freque
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16

Kondoleon, Caroline A., and Thomas F. Marinis. "Issues with Gold Electroplating for Microelectromechanical System Applications." MRS Proceedings 687 (2001). http://dx.doi.org/10.1557/proc-687-b5.18.

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AbstractElectro-plated gold films are used extensively in packaging of MEM sensors to make connections to signal conditioning electronics. Over the past two years, production lots of gold plated substrates, procured from various vendors, failed an accelerated aging qualification test. In this test, 0.0025 [mm] diameter aluminum wires were ultrasonically welded to the film, aged at 120°C for 48 hours, and then pulled to destruction. The criterion for passing this test was that the wires should break both before and after aging. In the defective lots, the wires lifted off of the gold film after
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17

Chua, Daniel H. C., W. I. Milne, L. J. Yu, D. Sheeja, and B. K. Tay. "Fabrication and Simulation of Amorphous Carbon Cantilever Structures." MRS Proceedings 773 (2003). http://dx.doi.org/10.1557/proc-773-n3.2.

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AbstractIn view of the superior bio-compatibility of amorphous carbon (a-C) films, a study has been carried out on the fabrication and simulation of free-standing amorphous carbon microcantilevers. The fabrication of micro-structure was carried out by a single photolithography step. A 1.7micro-meter thick, low stress, smooth (Rrms ∼0.75nm) a-C films were deposited by filtered cathodic vacuum arc deposition (FCVA) system, in conjunction with high substrate pulse biasing on patterned n-doped Si >100< substrates. Subsequently, the photoresist was lifted-off in acetone and which is followed
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18

Yun, F., H. Morkoc, D. L. Rode, K. T. Tsen, L. Farina, C. Kurdak, S. S. Park, and K. Y. Lee. "Analysis of Electron Transport in a High-Mobility Freestanding GaN Substrate Grown by Hydride Vapor-Phase Epitaxy." MRS Proceedings 680 (2001). http://dx.doi.org/10.1557/proc-680-e2.2.

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ABSTRACTSemiconductor nitrides grown on substrates with a large lattice mismatch typically contain extended and point defects that prevent the full potential of this material system from being attained. Among allthe substrate options explored so far, freestanding GaN templates appear ideal for homoepitaxial growth of GaN films. To this end, hydride vapor-phase epitaxial (HVPE) grown GaN templates with a thickness of more than 200 μm were thermally lifted off from the sapphire substrate and mechanically polished. The defect densityof such a template is expected to be non-uniform in the growth d
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