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Supercapacitors, S-C—capacitors that take advantage of the large capacitance at the interface between an electrode and an electrolyte—have found many short-term energy applications. The parallel plate cells were made of two transparent electrodes (ITO), each covered with a semiconductor-embedded, active carbon (A-C) layer. While A-C appears black, it is not an ideal blackbody absorber that absorbs all spectral light indiscriminately. In addition to a relatively flat optical absorption background, A-C exhibits two distinct absorption bands: in the near-infrared (near-IR and in the blue. The first may be attributed to absorption by the OH− group and the latter, by scattering, possibly through surface plasmons at the pore/electrolyte interface. Here, optical and thermal effects of sub-μm SiC particles that are embedded in A-C electrodes, are presented. Similar to nano-Si particles, SiC exhibits blue band absorption, but it is less likely to oxidize. Using Charge-Discharge (CD) experiments, the relative optically related capacitance increase may be as large as ~34% (68% when the illuminated area is taken into account). Capacitance increase was noted as the illuminated samples became hotter. This thermal effect amounts to <20% of the overall relative capacitance change using CD experiments. The thermal effect was quite large when the SiC particles were replaced by CdSe/ZnS quantum dots; for the latter, the thermal effect was 35% compared to 10% for the optical effect. When analyzing the optical effect one may consider two processes: ionization of the semiconductor particles and charge displacement under the cell’s terminals—a dipole effect. A model suggests that the capacitance increase is related to an optically induced dipole effect.
Haim Grebel. Optically Controlled Supercapacitors: Functional Active Carbon Electrodes with Semiconductor Particles. Materials 2021, 14, 4183 .
AMA StyleHaim Grebel. Optically Controlled Supercapacitors: Functional Active Carbon Electrodes with Semiconductor Particles. Materials. 2021; 14 (15):4183.
Chicago/Turabian StyleHaim Grebel. 2021. "Optically Controlled Supercapacitors: Functional Active Carbon Electrodes with Semiconductor Particles." Materials 14, no. 15: 4183.
In pursuit of perfect infrared (IR) radiation absorbers, we examined quasi-crystal structures made of graphite wires. Simulations on an array of subwavelength graphitic cages and cage-within-cage frameworks indicate a flat absorption coefficient between 10–30 µm. The concept could be scaled up through the 50–120 µm [far-IR, terahertz (THz)] region by a proper structural design. For cage-within-cage, the IR radiation energy is funneled toward the inner cage, resulting in a rather hot structure. At longer wavelengths (microwave region), the electrical conductivity dominates the negative dielectric effect, and experiments with copper cages indicate scattering resonances. Graphitic structures allude to some absorption even at microwave frequencies. Applications are envisioned as anti-fogging surfaces, adaptable electromagnetic shields, energy harvesting, and efficient absorbers in the far-IR (THz frequencies).
J. P. Walker; K. McDonough; H. Grebel. Optical cages made of graphitic frameworks. Applied Optics 2021, 60, 5564 -5568.
AMA StyleJ. P. Walker, K. McDonough, H. Grebel. Optical cages made of graphitic frameworks. Applied Optics. 2021; 60 (19):5564-5568.
Chicago/Turabian StyleJ. P. Walker; K. McDonough; H. Grebel. 2021. "Optical cages made of graphitic frameworks." Applied Optics 60, no. 19: 5564-5568.
Parametric oscillators and parametric amplifiers are known for their ‘quiet’ operation and find new applications in quantum circuitry. A Capacitor-within-Capacitor (CWC) is a nested electronic element that has two components: the cell (e.g., the outer capacitor) and the gate (e.g., the inner capacitor). Here we provide analysis and experiments on diode-interfaced, CWC that exhibit parametric oscillations and parametric amplifications. By replacing the diode with a doped nano-graphene junction, we demonstrated a new structure whose doping may be electronically and chemically controlled. Advantages of these elements are in their simplicity, large relative capacitance change (of the order of 50%), separation of pump and signal channels and possibility for large integration.
H. Grebel. Parametric oscillation and amplification with gate controlled capacitor-within-capacitor. SN Applied Sciences 2021, 3, 1 .
AMA StyleH. Grebel. Parametric oscillation and amplification with gate controlled capacitor-within-capacitor. SN Applied Sciences. 2021; 3 (6):1.
Chicago/Turabian StyleH. Grebel. 2021. "Parametric oscillation and amplification with gate controlled capacitor-within-capacitor." SN Applied Sciences 3, no. 6: 1.
Optical and thermal effects in asymmetric supercapacitors, whose active-carbon (AC) electrodes were embedded with nano-Si (n-Si) quantum dots (QD), are reported. We describe two structures: (1) p-n-like, obtained by using a polyethylimine (PEI) binder for the “n” electrode and a polyvinylpyrrolidone (PVP) binder for the “p” electrode; (2) a single component binder—poly(methyl methacrylate) (PMMA). In general, AC appears black to the naked eye and one may assume that it indiscriminately absorbs all light spectra. However, on top of a flat lossy spectrum, AC (from two manufacturers) exhibited two distinct absorption bands: one in the blue (~400 nm) and the other one in the near IR (~840 nm). The n-Si material accentuated the absorption in the blue and bleached the IR absorption. Both bands contributed to capacitance increase: (a) when using aqueous solution and a PMMA binder, the optical-related increased capacitance was 20% for low n-Si concentration and more than 100% for a high-concentration dose; (b) when using ion liquid (IL) electrolyte, the large, thermal capacitance increase (of ca. 40%) was comparable to the optical effect (of ca. 42%) and hence was assigned as an optically induced thermal effect. The experimental data point to an optically induced capacitance increase even in the absence of the n-Si dots. Overall, the experimental data suggest intriguing possibilities for optically controlled supercapacitors.
Haim Grebel. Asymmetric Supercapacitors: Optical and Thermal Effects When Active Carbon Electrodes Are Embedded with Nano-Scale Semiconductor Dots. C 2021, 7, 7 .
AMA StyleHaim Grebel. Asymmetric Supercapacitors: Optical and Thermal Effects When Active Carbon Electrodes Are Embedded with Nano-Scale Semiconductor Dots. C. 2021; 7 (1):7.
Chicago/Turabian StyleHaim Grebel. 2021. "Asymmetric Supercapacitors: Optical and Thermal Effects When Active Carbon Electrodes Are Embedded with Nano-Scale Semiconductor Dots." C 7, no. 1: 7.
The quenching of fluorescence (FL) at the vicinity of conductive surfaces and, in particular, near a 2-D graphene layer has become an important biochemical sensing tool. The quenching is attributed to fast non-radiative energy transfer between a chromophore (here, a Quantum Dot, QD) and the lossy graphene layer. Increased emission rate is also observed when the QD is coupled to a resonator. Here, we combine the two effects in order to control the emission lifetime of the QD. In our case, the resonator was defined by an array of nano-holes in the oxide substrate underneath a graphene surface guide. At resonance, the surface mode of the emitted radiation is concentrated at the nano-holes. Thus, the radiation of QD at or near the holes is spatially correlated through the hole-array’s symmetry. We demonstrated an emission rate change by more than 50% as the sample was azimuthally rotated with respect to the polarization of the excitation laser. In addition to an electrical control, such control over the emission lifetime could be used to control Resonance Energy Transfer (RET) between two chromophores.
Xin Miao; David J. Gosztola; Xuedan Ma; David Czaplewski; Liliana Stan; Haim Grebel. The Effect of Periodic Spatial Perturbations on the Emission Rates of Quantum Dots near Graphene Platforms. Materials 2020, 13, 3504 .
AMA StyleXin Miao, David J. Gosztola, Xuedan Ma, David Czaplewski, Liliana Stan, Haim Grebel. The Effect of Periodic Spatial Perturbations on the Emission Rates of Quantum Dots near Graphene Platforms. Materials. 2020; 13 (16):3504.
Chicago/Turabian StyleXin Miao; David J. Gosztola; Xuedan Ma; David Czaplewski; Liliana Stan; Haim Grebel. 2020. "The Effect of Periodic Spatial Perturbations on the Emission Rates of Quantum Dots near Graphene Platforms." Materials 13, no. 16: 3504.
In this paper, we propose the greedy smallest-cost-rate path first (GRASP) algorithm to route power from sources to loads in a digital microgrid (DMG). Routing of power from distributed energy resources (DERs) to loads of a DMG comprises matching loads to DERs and the selection of the smallest-cost-rate path from a load to its supplying DERs. In such a microgrid, one DER may supply power to one or many loads, and one or many DERs may supply the power requested by a load. Because the optimal method is NP-hard, GRASP addresses this high complexity by using heuristics to match sources and loads and to select the smallest-cost-rate paths in the DMG. We compare the cost achieved by GRASP and an optimal method based on integer linear programming on different IEEE test feeders and other test networks. The comparison shows the trade-offs between lowering complexity and achieving optimal-cost paths. The results show that the cost incurred by GRASP approaches that of the optimal solution by small margins. In the adopted networks, GRASP trades its lower complexity for up to 18% higher costs than those achieved by the optimal solution.
Zhengqi Jiang; Vinit Sahasrabudhe; Ahmed Mohamed; Haim Grebel; Roberto Rojas-Cessa. Greedy Algorithm for Minimizing the Cost of Routing Power on a Digital Microgrid. Energies 2019, 12, 3076 .
AMA StyleZhengqi Jiang, Vinit Sahasrabudhe, Ahmed Mohamed, Haim Grebel, Roberto Rojas-Cessa. Greedy Algorithm for Minimizing the Cost of Routing Power on a Digital Microgrid. Energies. 2019; 12 (16):3076.
Chicago/Turabian StyleZhengqi Jiang; Vinit Sahasrabudhe; Ahmed Mohamed; Haim Grebel; Roberto Rojas-Cessa. 2019. "Greedy Algorithm for Minimizing the Cost of Routing Power on a Digital Microgrid." Energies 12, no. 16: 3076.
In pursuit of infrared (IR) radiation absorbers, we examine icosahedral graphite wires. An array of graphitic cages and cage within cage, and whose overall thickness is smaller than the radiation wavelength exhibit a flat absorption spectrum, A~0.83 between 10-30 microns and a quality loss factor of L~0.83 (L=A/Q, with Q the quality factor). Our simulations suggest that these quasi crystal structures are capable of trapping electromagnetic energy within them. Applications are envisioned as anti-fogging surfaces, EM shields and energy harvesting.
J. P. Walker; H. Grebel. Optical cages made of graphitic frameworks. 2019, 1 .
AMA StyleJ. P. Walker, H. Grebel. Optical cages made of graphitic frameworks. . 2019; ():1.
Chicago/Turabian StyleJ. P. Walker; H. Grebel. 2019. "Optical cages made of graphitic frameworks." , no. : 1.
Multi-layer, metallo-dielectric structures (screens) have long been employed as electromagnetic band filters, either in transmission or in reflection modes. Here we study the radiation energy not transmitted or reflected by these structures (trapped radiation, which is denoted—absorption). The trapped radiation leads to hot surfaces. In these bi-layer screens, the top (front) screen is made of metallic hole-array and the bottom (back) screen is made of metallic disk-array. The gap between them is filled with an array of dielectric spheres. The spheres are embedded in a dielectric host material, which is made of either a heat-insulating (air, polyimide) or heat-conducting (MgO) layer. Electromagnetic intensity trapping of 97% is obtained when a 0.15 micron gap is filled with MgO and Si spheres, which are treated as pure dielectrics (namely, with no added absorption loss). Envisioned applications are anti-fogging surfaces, electromagnetic shields, and energy harvesting structures.
Jean Paul Walker; Venkataraman Swaminathan; Aisha S. Haynes; Haim Grebel. Periodic Metallo-Dielectric Structures: Electromagnetic Absorption and its Related Developed Temperatures. Materials 2019, 12, 2108 .
AMA StyleJean Paul Walker, Venkataraman Swaminathan, Aisha S. Haynes, Haim Grebel. Periodic Metallo-Dielectric Structures: Electromagnetic Absorption and its Related Developed Temperatures. Materials. 2019; 12 (13):2108.
Chicago/Turabian StyleJean Paul Walker; Venkataraman Swaminathan; Aisha S. Haynes; Haim Grebel. 2019. "Periodic Metallo-Dielectric Structures: Electromagnetic Absorption and its Related Developed Temperatures." Materials 12, no. 13: 2108.
In order to minimize unintentional discharge, supercapacitors are interfaced with a membrane that separates the anode from the cathode—this membrane is called the separator. We focus here on separators, which are structured as electronic diode-like. We call an electrically structured separator “the gate”. Through experiments, it was demonstrated that ionic liquid-filled supercapacitors, which were interfaced with gated separators exhibited a substantial capacitance (C) increase and reduction in the equivalent series resistance (ESR) compared to cells with ordinary separators. These two attributes help to increase the energy, which is stored in a cell, since for a given cell’s voltage, the dissipated energy on the cell, UR = V2/4(ESR) and the stored energy, UC = CV2/2, would increase. These were indeed ionic diodes since the order of the diode layout mattered—the diode-like structures exhibited maximum capacitance when their p-side faced the auxiliary electrode.
Tazima S. Chowdhury; Haim Grebel. Ion-Liquid Based Supercapacitors with Inner Gate Diode-Like Separators. ChemEngineering 2019, 3, 39 .
AMA StyleTazima S. Chowdhury, Haim Grebel. Ion-Liquid Based Supercapacitors with Inner Gate Diode-Like Separators. ChemEngineering. 2019; 3 (2):39.
Chicago/Turabian StyleTazima S. Chowdhury; Haim Grebel. 2019. "Ion-Liquid Based Supercapacitors with Inner Gate Diode-Like Separators." ChemEngineering 3, no. 2: 39.
Further increasing the capacitance of supercapacitors is crucial to a large number of applications in energy, communication and sensor fields. Most attention to date was given to the electrodes and the electrolyte with less attention to the separator layer, which in most cases is an electrically insulating membrane. Here we consider an electronically structured separator, which we call the gate. By depositing the separator with permeable layers of p-type and n-type, functionalized single-walled carbon nanotubes (SWCNT) we show that the capacitance of supercapacitors may be increased (in our case, by at least 15%). Additional capacitance increase is achieved for a gate that is biased between -0.1 V to +0.1 V vs Ag/AgCl (in our case, by 15%). The electrical energy, invested in a biased gate is fully captured as stored energy. Implementation to commercial supercapacitors is discussed, as well.
Tazima S. Chowdhury; Haim Grebel. Supercapacitors with electrical gates. Electrochimica Acta 2019, 307, 459 -464.
AMA StyleTazima S. Chowdhury, Haim Grebel. Supercapacitors with electrical gates. Electrochimica Acta. 2019; 307 ():459-464.
Chicago/Turabian StyleTazima S. Chowdhury; Haim Grebel. 2019. "Supercapacitors with electrical gates." Electrochimica Acta 307, no. : 459-464.
We examine array of metal-mesh frameworks for their wide-band absorption. These take the form of quasi-crystal optical cages. While there are many plasmonic structures that exhibit lossy behavior, they tend to be narrow band. By defining a quality loss metric, L=A/Q, where A is the absorption coefficient and Q is the quality factor, we are able to show that all absorbers fall in the range L:[0,2]. Metastructures have L∼0.04 while in our case L∼0.35. An array of cages tends to focus the incoming radiation within each framework. An array of cage-within-cage funnels the radiation from the outer cage to its inner core even further raising the possibility for new applications. We report on two surprising outcomes: copper based frameworks are better than silver based, and larger cage opening (thinner wires) are more effective than smaller openings (thicker wires).
V. Kumar; J.P. Walker; H. Grebel. Optical cages. Optical Materials: X 2019, 1, 100008 .
AMA StyleV. Kumar, J.P. Walker, H. Grebel. Optical cages. Optical Materials: X. 2019; 1 ():100008.
Chicago/Turabian StyleV. Kumar; J.P. Walker; H. Grebel. 2019. "Optical cages." Optical Materials: X 1, no. : 100008.
Transfer of graphene, grown by chemical vapor deposition (CVD), to a substrate of choice, typically involves the deposition of a polymeric layer (for example, poly(methyl methacrylate) (PMMA), or polydimethylsiloxane, PDMS). These polymers are quite hard to remove without leaving some residues behind. One method to improve the graphene transfer is to coat the graphene with a thin protective oxide layer, followed by the deposition of a very thin polymer layer on top of the oxide layer (much thinner than the usual thickness), followed by a more aggressive polymeric removal method, thus leaving the graphene intact. At the same time, having an oxide layer on graphene may serve applications, such as channeled transistors or sensing devices. Here, we study the transfer of graphene with a protective thin oxide layer grown by atomic layer deposition (ALD). We follow the transfer process from the graphene growth stage through oxide deposition until completion. We report on the nucleation growth process of oxides on graphene, their resultant strain and their optical transmission.
Haim Grebel; Liliana Stan; Anirudha V. Sumant; Yuzi Liu; David Gosztola; Leonidas Ocola; Brandon Fisher. Transfer of Graphene with Protective Oxide Layers. ChemEngineering 2018, 2, 58 .
AMA StyleHaim Grebel, Liliana Stan, Anirudha V. Sumant, Yuzi Liu, David Gosztola, Leonidas Ocola, Brandon Fisher. Transfer of Graphene with Protective Oxide Layers. ChemEngineering. 2018; 2 (4):58.
Chicago/Turabian StyleHaim Grebel; Liliana Stan; Anirudha V. Sumant; Yuzi Liu; David Gosztola; Leonidas Ocola; Brandon Fisher. 2018. "Transfer of Graphene with Protective Oxide Layers." ChemEngineering 2, no. 4: 58.
Capacitors are typically connected together in one of two configurations: either in series, or in parallel. Here we study a capacitor-within-capacitor configuration. Simulations and experiments indicate that the overall capacitance of the structured cell may be made larger than an ordinary two-plate counterpart by at least 50%. Simulations also indicate that the cell’s capacitance may be controlled by the gate voltage. Overall, this concept is deemed suitable for microfluidic sensing and possibly for energy storage elements.
H. Grebel. Capacitor-within-capacitor. SN Applied Sciences 2018, 1, 48 .
AMA StyleH. Grebel. Capacitor-within-capacitor. SN Applied Sciences. 2018; 1 (1):48.
Chicago/Turabian StyleH. Grebel. 2018. "Capacitor-within-capacitor." SN Applied Sciences 1, no. 1: 48.
Graphene-based field effect transistors (GFETs) were assessed when interfaced with well separated and precisely placed core/shell CdSe/ZnS semiconductor quantum dot (QD) arrays. The QDs were imbedded in a hexagonal hole-array, which was formed in a layer of anodized aluminum oxide on Si/SiO2 substrates. Graphene (single, or two layers), grown by chemical vapor deposition (CVD) on Cu foils, was transferred and placed on top of the QDs imbedded films and served as the transistor channel. Electrical characteristics under white-light illumination at various biasing conditions revealed that the photo current was decreasing upon increasing biasing. The device's photoluminescence (PL) as a function of both the drain-source and gate-source potentials also reduced as a function of the potential biases. We observed two maxima in the PL data while tilting the sample with respect to the incident laser beam. We attributed it to the optimal coupling between the incident and the emission wavelengths to resonating surface modes.
Xin Miao; Samarth Trivedi; Haim Grebel. Graphene Channels Interfaced with Quantum Dots in Field Effect Transistors: Electrical and Photo-Induced Effects. MRS Advances 2016, 1, 1597 -1603.
AMA StyleXin Miao, Samarth Trivedi, Haim Grebel. Graphene Channels Interfaced with Quantum Dots in Field Effect Transistors: Electrical and Photo-Induced Effects. MRS Advances. 2016; 1 (22):1597-1603.
Chicago/Turabian StyleXin Miao; Samarth Trivedi; Haim Grebel. 2016. "Graphene Channels Interfaced with Quantum Dots in Field Effect Transistors: Electrical and Photo-Induced Effects." MRS Advances 1, no. 22: 1597-1603.
Our goal is to electronically regulate electrochemical cells. For this, we introduced a third element, called the gate, which was placed between the cathode and the anode electrodes of the cell. Voltage applied to this element controlled the electronic current in the external circuit. The change in the cell's current was attributed to local change in the electrolyte potential, which impacted the flow of ions within the cell. We provide simulations and experimental data as a proof of concept. This is but the first step toward a demonstration of a two-dimensional, bi-carrier ion transistors.
Haim Grebel; Akshat Patel. Electrochemical cells with intermediate capacitor elements. Chemical Physics Letters 2015, 640, 36 -39.
AMA StyleHaim Grebel, Akshat Patel. Electrochemical cells with intermediate capacitor elements. Chemical Physics Letters. 2015; 640 ():36-39.
Chicago/Turabian StyleHaim Grebel; Akshat Patel. 2015. "Electrochemical cells with intermediate capacitor elements." Chemical Physics Letters 640, no. : 36-39.
Using Surface Enhanced Raman Scattering (SERS), we report on intensity-dependent broadening in graphene-deposited broad-band antennas. The antenna gain curve includes both the incident frequency and some of the scattered mode frequencies. By comparing antennas with various gaps and types (bow-tie vs. diamond-shape antennas) we make the case that the line broadening did not originate from strain, thermal or surface potential. Strain, if present, further shifts and broadens those Raman lines that are included within the antenna gain curve.
Charilaos Paraskevaidis; Tevye Kuykendall; Mauro Melli; Alexander Weber-Bargioni; P. James Schuck; Adam Schwartzberg; Scott Dhuey; Stefano Cabrini; Haim Grebel. Gain and Raman line-broadening with graphene coated diamond-shape nano-antennas. Nanoscale 2015, 7, 15321 -15331.
AMA StyleCharilaos Paraskevaidis, Tevye Kuykendall, Mauro Melli, Alexander Weber-Bargioni, P. James Schuck, Adam Schwartzberg, Scott Dhuey, Stefano Cabrini, Haim Grebel. Gain and Raman line-broadening with graphene coated diamond-shape nano-antennas. Nanoscale. 2015; 7 (37):15321-15331.
Chicago/Turabian StyleCharilaos Paraskevaidis; Tevye Kuykendall; Mauro Melli; Alexander Weber-Bargioni; P. James Schuck; Adam Schwartzberg; Scott Dhuey; Stefano Cabrini; Haim Grebel. 2015. "Gain and Raman line-broadening with graphene coated diamond-shape nano-antennas." Nanoscale 7, no. 37: 15321-15331.
K. P. Stewart; K. D. Möller; H. Grebel. Infrared measurements and simulations of metal meshes in a focused beam. Journal of Applied Physics 2014, 115, 53104 .
AMA StyleK. P. Stewart, K. D. Möller, H. Grebel. Infrared measurements and simulations of metal meshes in a focused beam. Journal of Applied Physics. 2014; 115 (5):53104.
Chicago/Turabian StyleK. P. Stewart; K. D. Möller; H. Grebel. 2014. "Infrared measurements and simulations of metal meshes in a focused beam." Journal of Applied Physics 115, no. 5: 53104.
Suspended graphene waveguides over micrometer-scale metal-mesh screens were used as platforms for Raman scattering. Raman signals of B. megaterium spores were found sensitive to in-plane rotations and tilt of the waveguides with respect to the incident linearly polarized pump beam. When at plasmonic resonance for the equivalent long wavelength of the vibration frequency, the Raman signal exhibited an additional quadratic effect.
Amrita Banerjee; Haim Grebel. Nonlinear behavior of vibrating molecules on suspended graphene waveguides. Optics Letters 2013, 38, 226 -228.
AMA StyleAmrita Banerjee, Haim Grebel. Nonlinear behavior of vibrating molecules on suspended graphene waveguides. Optics Letters. 2013; 38 (2):226-228.
Chicago/Turabian StyleAmrita Banerjee; Haim Grebel. 2013. "Nonlinear behavior of vibrating molecules on suspended graphene waveguides." Optics Letters 38, no. 2: 226-228.
We demonstrated efficient nonlinear coupling between local vibrating molecules and propagating polariton modes at the vibration frequency (namely, mid-IR frequencies) using suspended graphene waveguides. Each waveguide deposited a micron-scale periodic metal (plasmonic) structure. Nonlinear effect, at very modest pump laser intensities has been demonstrated; these intensity levels are often used in ordinary Raman experiments. The polariton mode propagated through fairly long distances, several IR wavelengths long, without a substantial loss. Thus, the suspended graphene has established itself as a unique waveguide for the THz/infrared region.
A. Banerjee; H. Grebel. Enhancing nonlinear effects with micron-scale graphene-coated plasmonic structures. IEEE Photonics Conference 2012 2012, 768 -769.
AMA StyleA. Banerjee, H. Grebel. Enhancing nonlinear effects with micron-scale graphene-coated plasmonic structures. IEEE Photonics Conference 2012. 2012; ():768-769.
Chicago/Turabian StyleA. Banerjee; H. Grebel. 2012. "Enhancing nonlinear effects with micron-scale graphene-coated plasmonic structures." IEEE Photonics Conference 2012 , no. : 768-769.
We address curved IR screens for multiwavelength systems. To first-order of the approximation, a curved screen may be viewed as composed of many local flat screens. On the other hand, the validity of such an approximation is not clear a priori. We provide experiments and simulations to show that such an approximation works well for cylindrically curved IR screens while monitoring their peak transmission as a function of the screen curvature.
A. Banerjee; D. Sliwinski; K. P. Stewart; K. D. Möller; H. Grebel. Curved infrared screens. Optics Letters 2010, 35, 1635 -1637.
AMA StyleA. Banerjee, D. Sliwinski, K. P. Stewart, K. D. Möller, H. Grebel. Curved infrared screens. Optics Letters. 2010; 35 (10):1635-1637.
Chicago/Turabian StyleA. Banerjee; D. Sliwinski; K. P. Stewart; K. D. Möller; H. Grebel. 2010. "Curved infrared screens." Optics Letters 35, no. 10: 1635-1637.