Zeitschriftenartikel zum Thema „Frustrated Total Internal Reflection (FTIR)“

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1

Martinez, J. C. „Confronting the Hartman effect with data from frustrated total internal reflection (FTIR)“. Laser Physics 16, Nr. 7 (Juli 2006): 1123–27. http://dx.doi.org/10.1134/s1054660x06070176.

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2

Hial, Qahtan Ghatih. „Frustrated total internal reflection of newton rings multiple beam interference“. Iraqi Journal of Physics (IJP) 15, Nr. 35 (02.10.2018): 29–39. http://dx.doi.org/10.30723/ijp.v15i35.51.

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Frustrated Total Internal Reflection FTIR phenomenon is manifested employing Newton‟s rings setup generated via a coherent light beam of a laser diode ( . All concentric bright and dark rings, except the central bright spot, were noticed to recede (disappear) when the incident angle exceeded the critical angle of 41o.It was also shown that the current setup has proven its applicability for other tests and can give convenient results that conform with theory. Neither the concept nor the design is beyond what can be realized in an undergraduate laboratory. However, technical improvements in mounting the prism - lens may be advisable. As an extension of the experiments, the effect can be studied using hollow prism filled with liquids of different refractive indices for both S and P polarizations of light. Also, the relationship of wavelength on the penetration depth can be explored.
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3

Kolhe, Neel, und Sreyashi Shetty. „A novel cantenna based demonstration of frustrated total internal reflection as an analog for quantum tunnelling“. Physics Education 58, Nr. 2 (11.01.2023): 025011. http://dx.doi.org/10.1088/1361-6552/acad59.

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Abstract We use a ‘Cantenna’ (portmanteau of ‘Can’ and ‘Antenna’), which is a unidirectional homemade waveguide, coupled to a standard readily available, 2.4 GHz Wi-Fi router as a source of microwaves to demonstrate Frustrated Total Internal reflection (FTIR) using paraffin-wax prisms. This largely inexpensive experiment provides an opportunity to demonstrate a process closely analogous to quantum tunnelling in an undergraduate physics lab. FTIR is often demonstrated with glass prisms and lasers, which may not allow for an intuitive understanding of evanescent waves and tunnelling. Wi-Fi signals with a wavelength of 12.5 cm, and large maneuverable prisms, allow the length of the ‘barrier’ to be changed in a tactile way where measurements could be taken with tools available in a standard physics lab.
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4

Голубцова, Ю. В. „ОЦЕНКА КАЧЕСТВА И ПОДЛИННОСТИ ПЛОДОВО-ЯГОДНОГО СЫРЬЯ МЕТОДОМ ИК-ФУРЬЕ СПЕКТРОСКОПИИ НАРУШЕННОГО ПОЛНОГО ВНУТРЕННЕГО ОТРАЖЕНИЯ“. ТЕХНИКА И ТЕХНОЛОГИЯ ПИЩЕВЫХ ПРОИЗВОДСТВ 2, Nr. 45 (23.06.2017): 126–32. http://dx.doi.org/10.21179/2074-9414-2017-2-126-132.

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5

Lin, Jhe-Syuan, und Wen-Shing Sun. „A Hidden Fingerprint Device on an Opaque Display Panel“. Applied Sciences 10, Nr. 6 (23.03.2020): 2188. http://dx.doi.org/10.3390/app10062188.

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In recent years, fingerprint recognition has become more and more widely used in mobile phones. A fingerprint recognition device hidden under an opaque display panel designed based on a waveguide and frustrated total internal reflection (FTIR) is proposed and demonstrated herein. In order to meet the demand for a high screen ratio for mobile phone displays, we use a symmetrical zoom-in and zoom-out coupler design. With this comprehensive coupler and waveguide design, not only can fingerprint recognition be achieved using an opaque display panel, but it also meets the appearance requirements for a mobile phone with a high screen ratio.
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6

Жуков, Н. Д., А. Г. Роках und М. И. Шишкин. „Свойства наночастиц сульфида свинца в мультизеренной структуре“. Физика и техника полупроводников 52, Nr. 6 (2018): 608. http://dx.doi.org/10.21883/ftp.2018.06.45924.8686.

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AbstractThe structural and electrical properties of PbS nanoparticles (40–70 nm), produced by a chemical reaction of sodium hydroxide with lead nitrate and electrophoretically deposited onto a conductive substrate, are investigated. The composition and structure of the nanoparticles are identified by X-ray analysis as pure PbS phase with a face-centered cubic lattice. Several minima, related to plasma-resonance absorption at 10–17 μm, are observed in the frustrated total internal reflection (FTIR) spectra. The layer morphology and the nanoparticle shape and sizes are determined by scanning electron and tunneling microscopy. The threedimensional topograms show that the surface fine structure is a set of faceted pyramidal spikes with a size of 5–10 nm and a density of ~400 μm^–2. An analysis of the tunneling current–voltage characteristics of individual nanospikes shows the presence of low-field emission and makes it possible to determine the barrier heights (1.6–1.8 eV), which are explained within the quantum-dot (QD) model.
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7

Brodie, Graham, und Grigory Torgovnikov. „Microwave Soil Heating with Evanescent Fields from Slow-Wave Comb and Ceramic Applicators“. Energies 15, Nr. 3 (31.01.2022): 1068. http://dx.doi.org/10.3390/en15031068.

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Microwave soil heating deactivates weed seeds; however, in many modern agricultural settings, weed seeds are mostly found in the top 1–2 cm of the soil profile. Until recently, microwave soil heating has been achieved using various antennas, which project the microwave energy deeply into the soil. The aim of this research was to develop new microwave applicators that provide shallow heating (less than 50 mm). This paper presents two applicator designs, one based on a comb slow-wave structure and the other on the frustrated total internal reflection (FTIR) principle, which utilise evanescent microwave fields to restrict the depth of microwave heating. The background theory to their performance is presented, followed by experimental evidence of their constrained heating performance under different soil moisture scenarios. Experimental measurements of the heating performance of these applicators, in soils of varying moisture content, demonstrate that the evanescent microwave fields restrict the depth of heating, so that most of the energy is manifested in the top 50 mm of soil. The evanescent field decay rate for the FTIR applicator changes from 44.0 ± 0.7 m−1 to 30 ± 1.2 m−1 as the soil moisture changes from 32% to 174% (dry weight basis). This is higher than the evanescent field decay rate for the comb slow-wave applicator (17.6 ± 0.7 m−1 to 19.9 ± 1.5 m−1). The FTIR applicator has a wider and shallower heating pattern than the comb slow-wave applicator. Because of the double heating lobes of the FTIR applicator, the effective half temperature heating width is approximately 150 mm. This is wider than the half temperature heating width of the comb slow-wave applicator (95 mm).
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8

Becchetti, Matteo, Roberto Marsili, Ferdinando Cannella und Alberto Garinei. „A new system for the measurement of gripping force based on scattering“. ACTA IMEKO 6, Nr. 4 (28.12.2017): 100. http://dx.doi.org/10.21014/acta_imeko.v6i4.481.

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<p style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-family: Calibri; font-size: small;">The measurement of contact pressure of human fingers is very important to understand human perceptual mechanisms, that is the main goal of most of the neuroscientific studies. It may also lead to a correct development of tactile devices and haptic systems, as they are intended to convey controllable and effective stimuli.</span></span></p><span style="font-family: 'Garamond','serif'; font-size: 10pt; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-GB; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN-GB">In this work, an optical measurement system based on Frustrated Total Internal Reflection (FTIR) is proposed for the measurement of the pressure distribution on the contact area between a human finger and a flat surface. The feasibility study performed shows that the tested sensor can be effectively used for the measurement of the fingertip contact pressure both on static and dynamic conditions.</span>
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Borković, Katarina, und Andreana Ćurić. „“Tap, Tap Water”. Quantum Tunneling Demonstration“. Natural Science and Advanced Technology Education 31, Nr. 4 (01.08.2022): 359–70. http://dx.doi.org/10.53656/nat2022-4.04.

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Quantum tunneling is a phenomenon in which an atom or a subatomic particle appears on the other side of a potential barrier that should be impenetrable to the particle, given the difference between the kinetic energy of the particle and the potential energy of the barrier, the former being significantly lesser. However, if the barrier shrinks enough the particle will be able to tunnel right through it. This is among the most well-known quantum physics phenomena. Historically, physicists struggled to grasp the wavelike and particle-like duality of light and subatomic particles. The aforementioned phenomenon occurs due to the wavelike behavior of photons. Quantum phenomena, such as quantum tunneling, might appear quite convoluted, therefore a simple experimental demonstration was performed to highlight the basic mechanisms of the phenomenon in a manner comprehensible to the wide masses. The demonstration, however, is just what we are in fact observing instead of quantum tunneling – “optical tunneling”, perhaps more commonly known as Frustrated Total Internal Reflection (FTIR). This mathematically analogous phenomenon serves as a mere tool for explaining quantum tunneling while aiding our understanding of it and facilitating its visualization. The experimental demonstration shall prove that quantum tunneling is a daily occurring phenomenon and that it is possible once the barrier is thin enough. If these arguments are indeed met with a successful visual demonstration a wavelike character of the photons happens to be confirmed as well.
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10

Hernandez, Alyssa M., Jessica A. Sandoval, Michelle C. Yuen und Robert J. Wood. „Stickiness in shear: stiffness, shape, and sealing in bioinspired suction cups affect shear performance on diverse surfaces“. Bioinspiration & Biomimetics 19, Nr. 3 (26.03.2024): 036008. http://dx.doi.org/10.1088/1748-3190/ad2c21.

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Abstract Aquatic organisms utilizing attachment often contend with unpredictable environments that can dislodge them from substrates. To counter these forces, many organisms (e.g. fish, cephalopods) have evolved suction-based organs for adhesion. Morphology is diverse, with some disc shapes deviating from a circle to more ovate designs. Inspired by the diversity of multiple aquatic species, we investigated how bioinspired cups with different disc shapes performed in shear loading conditions. These experiments highlighted pertinent physical characteristics found in biological discs (regions of stiffness, flattened margins, a sealing rim), as well as ecologically relevant shearing conditions. Disc shapes of fabricated cups included a standard circle, ellipses, and other bioinspired designs. To consider the effects of sealing, these stiff silicone cups were produced with and without a soft rim. Cups were tested using a force-sensing robotic arm, which directionally sheared them across surfaces of varying roughness and compliance in wet conditions while measuring force. In multiple surface and shearing conditions, elliptical and teardrop shapes outperformed the circle, which suggests that disc shape and distribution of stiffness may play an important role in resisting shear. Additionally, incorporating a soft rim increased cup performance on rougher substrates, highlighting interactions between the cup materials and surfaces asperities. To better understand how these cup designs may resist shear, we also utilized a visualization technique (frustrated total internal reflection; FTIR) to quantify how contact area evolves as the cup is sheared.
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11

Zhu, Yu, Chuanjun Yao, Jinbang Chen und Rihong Zhu. „Frustrated total internal reflection evanescent switching“. Optics & Laser Technology 31, Nr. 8 (November 1999): 539–42. http://dx.doi.org/10.1016/s0030-3992(99)00102-4.

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12

Balcou, Ph, L. Dutriaux, F. Bretenaker und A. Le Floch. „Frustrated total internal reflection of laser eigenstates“. Journal of the Optical Society of America B 13, Nr. 7 (01.07.1996): 1559. http://dx.doi.org/10.1364/josab.13.001559.

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13

Longhi, Stefano. „Resonant tunneling in frustrated total internal reflection“. Optics Letters 30, Nr. 20 (2005): 2781. http://dx.doi.org/10.1364/ol.30.002781.

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14

Mamedov, R. K. „Combined element for multiple frustrated total internal reflection“. Journal of Optical Technology 67, Nr. 9 (01.09.2000): 837. http://dx.doi.org/10.1364/jot.67.000837.

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15

MacFarlane, D. L., M. P. Christensen, K. Liu, T. P. LaFave, G. A. Evans, N. Sultana, T. W. Kim et al. „Four-Port Nanophotonic Frustrated Total Internal Reflection Coupler“. IEEE Photonics Technology Letters 24, Nr. 1 (Januar 2012): 58–60. http://dx.doi.org/10.1109/lpt.2011.2172204.

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16

Carey, John J., Justyna Zawadzka, Dino A. Jaroszynski und Klaas Wynne. „Noncausal Time Response in Frustrated Total Internal Reflection?“ Physical Review Letters 84, Nr. 7 (14.02.2000): 1431–34. http://dx.doi.org/10.1103/physrevlett.84.1431.

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17

Zhu, S., A. W. Yu, D. Hawley und R. Roy. „Frustrated total internal reflection: A demonstration and review“. American Journal of Physics 54, Nr. 7 (Juli 1986): 601–7. http://dx.doi.org/10.1119/1.14514.

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18

Vörös, Zoltán, und Rainer Johnsen. „A simple demonstration of frustrated total internal reflection“. American Journal of Physics 76, Nr. 8 (August 2008): 746–49. http://dx.doi.org/10.1119/1.2904473.

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19

Goddard, Nicholas J., Kirat Singh, Richard J. Holmes und Behnam Bastani. „Resonant grating sensors using frustrated total-internal reflection“. Sensors and Actuators B: Chemical 51, Nr. 1-3 (August 1998): 131–36. http://dx.doi.org/10.1016/s0925-4005(98)00180-4.

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20

Grattan, K., A. Palmer und D. Saini. „Frustrated-total-internal-reflection fiber-optic pressure sensor“. Journal of Lightwave Technology 3, Nr. 5 (1985): 1130–34. http://dx.doi.org/10.1109/jlt.1985.1074290.

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21

Cluzel, Benoit, und Frédérique De Fornel. „Frustrated total internal reflection: the Newton experiment revisited“. Photoniques, Nr. 116 (2022): 32–37. http://dx.doi.org/10.1051/photon/202211632.

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Three centuries ago, Isaac Newton reported the experimental observation of the tunnelling of a light ray between two prisms separated by a small gap once one of them was shinned in total internal reflection. This article describes a modern revisit of this seminal Newton’s experiment, generally known as the Frustrated Total Internal Reflection. This experiment was created in the framework of a series of lectures about near-field optics and nanophotonics for Master students. During a 4h lab work session, the students are running the experiment to evidence and quantify the evanescent wave on top of a glass prism once illuminated above the critical angle.
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22

Hirano, John, und David Garmire. „Force Transducer Through Total Internal Reflection and Frustrated Total Internal Reflection for a Three-Axis Anemometer“. IEEE Sensors Journal 15, Nr. 7 (Juli 2015): 3827–34. http://dx.doi.org/10.1109/jsen.2014.2385751.

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23

Suhr, Wilfried. „Gaining insight into antibubbles via frustrated total internal reflection“. European Journal of Physics 33, Nr. 2 (17.02.2012): 443–54. http://dx.doi.org/10.1088/0143-0807/33/2/443.

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24

Huntoon, Nathan R., Marc P. Christensen, Duncan L. MacFarlane, Gary A. Evans und C. S. Yeh. „Integrated photonic coupler based on frustrated total internal reflection“. Applied Optics 47, Nr. 30 (16.10.2008): 5682. http://dx.doi.org/10.1364/ao.47.005682.

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25

Zanella, F. P., D. V. Magalhães, M. M. Oliveira, R. F. Bianchi, L. Misoguti und C. R. Mendonça. „Frustrated total internal reflection: A simple application and demonstration“. American Journal of Physics 71, Nr. 5 (Mai 2003): 494–96. http://dx.doi.org/10.1119/1.1523075.

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26

Hashemi, Mir Amid, und Charles M. Heron. „Analysis of particle contact using frustrated total internal reflection“. Meccanica 54, Nr. 4-5 (März 2019): 653–65. http://dx.doi.org/10.1007/s11012-019-00966-9.

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27

Petrov, Nikolai I. „Frustrated-total-internal-reflection-based thin-film color separator“. Optics Letters 32, Nr. 18 (13.09.2007): 2744. http://dx.doi.org/10.1364/ol.32.002744.

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28

Balcou, Ph, und L. Dutriaux. „Dual Optical Tunneling Times in Frustrated Total Internal Reflection“. Physical Review Letters 78, Nr. 5 (03.02.1997): 851–54. http://dx.doi.org/10.1103/physrevlett.78.851.

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29

Pavlov, I. N. „Comparison of sensitivity of the refractometric methods of frustrated total internal reflection and surface plasmon resonance“. Izmeritel`naya Tekhnika, Nr. 2 (2020): 44–49. http://dx.doi.org/10.32446/0369-1025it.2020-2-44-49.

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Two optical methods, namely surface plasmon resonance imaging and frustrated total internal reflection, are described in the paper in terms of comparing their sensitivity to change of refractive index of a thin boundary layer of an investigated medium. It is shown that, despite the fact that the theoretically calculated sensitivity is higher for the frustrated total internal reflection method, and the fact that usually in practice the surface plasmon resonance method, on the contrary, is considered more sensitive, under the same experimental conditions both methods show a similar result.
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Brinkevich, S. D., D. I. Brinkevich, V. S. Prosolovich, S. B. Lastovskii und A. N. Pyatlitski. „Frustrated Total Internal Reflection Spectra of Diazoquinone–Novolac Photoresist Films“. Journal of Applied Spectroscopy 87, Nr. 6 (Januar 2021): 1072–78. http://dx.doi.org/10.1007/s10812-021-01111-9.

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31

Pavlov, I. N., und B. S. Rinkevichyus. „Near-wall liquid flows visualization on frustrated total internal reflection“. Optical Memory and Neural Networks 18, Nr. 4 (Dezember 2009): 322–27. http://dx.doi.org/10.3103/s1060992x09040110.

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32

Volchek, B. Z., S. V. Kononova, E. N. Vlasova, R. K. Mamedov und K. A. Mikhalev. „Study of microporous membranes using frustrated total internal reflection spectroscopy“. Journal of Optical Technology 70, Nr. 1 (01.01.2003): 22. http://dx.doi.org/10.1364/jot.70.000022.

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33

Ghatak, Ajoy, und Swagata Banerjee. „Temporal delay of a pulse undergoing frustrated total internal reflection“. Applied Optics 28, Nr. 11 (01.06.1989): 1960. http://dx.doi.org/10.1364/ao.28.001960.

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34

Kiven, Stacy B., Jianxun Lei, Varun Sagi, Huy Tran, Ying Wang, Piyusha P. Pagare, Jennifer O. Nwankwo, Nils Lambrecht und Kalpna Gupta. „Calpain-1 Contributes to Pain and Organ Damage in Sickle Cell Disease“. Blood 134, Supplement_1 (13.11.2019): 76. http://dx.doi.org/10.1182/blood-2019-127761.

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Sickle cell disease (SCD) is complex with disabling and life-threatening consequences including pain and organ damage. We hypothesized that calpain-1, a calcium-dependent protease may contribute to both organ damage and pain in SCD because deletion of calpain-1 in HbSS Townes mice ameliorated hyperalgesia (Nwankwo et al., Haematologica 2016), and BDA-410, a selective calpain-1 inhibitor, significantly improved age-associated organ damage in a mouse model of aging (Nabeshima et al., Sci Reports 2014). We performed a randomized double-blind placebo-controlled trial in homozygous female HbSS BERK (sickle) mice to examine the effect of BDA-410 on pain and organ pathology. Mice were treated daily intraperitoneally with vehicle (50 μl DMSO in 950 μl sesame oil) and BDA-410 at 30 mg/kg or 100 mg/kg for 2 weeks. Mechanical-, thermal- (heat and cold), and deep hyperalgesia were assessed at baseline (before treatment), during treatment (1-hour post-injection, as well as on days 4, 8, 12), and after discontinuation of treatment (days 16, 20, 24, and 28). Using 2-way repeated measures ANOVA with Tukey's correction, we observed a significant decrease in mechanical, heat, and cold hyperalgesia in sickle mice treated with BDA-410. Compared to baseline, we observed a significant decrease in, [a] mechanical hyperalgesia, on day 8 with 30 mg/kg (p=0.0312), and days 8, 12, 16, 20, and 24 with 100 mg/kg dose (p=0.0012; p&lt;0.0001; p&lt;0.001; p=0.0006 and p=0.0007, respectively); [b] heat hyperalgesia, on days 8, 12, 16, and 20 with 30 mg/kg (p=0.044, 0.0027, 0.0172 and 0.0326, respectively), and on day 12 with 100 mg/kg (p=0.0138); and [c] cold hyperalgesia on days 8, 12, 16, 20, 24, and 28 with both 30 mg/kg (p= 0.0254, 0.0155, 0.001, 0.003, 0.035 and 0.008, respectively) and 100 mg/kg (p= 0.0054, 0.0035, 0.005, 0.009, 0.011 and 0.003, respectively). No significant difference in deep hyperalgesia was observed with either treatment. No significant effect of vehicle was found on any measures. Although BDA-410 treatment was discontinued after 2 weeks, analgesic effect was maintained for a significantly longer time, suggesting amelioration of the pathobiology of pain and/or inhibition of neural transmission of pain mechanisms. Therefore, BDA-410 is effective in reducing chronic pain in sickle mice without causing tolerance. In addition to pain, extensive Purkinje cell damage in the cerebellum and liver infarcts have been demonstrated in BERK sickle mice (Manci et al., Blood 2006). We observed reduced liver infarction in number and area as well as a significant decrease in Purkinje cell damage in sickle mice treated with 30 mg/kg and 100 mg/kg BDA-410 vs. vehicle (p= 0.0007 & 0.0233, respectively). Thus, BDA-410 is effective at significantly reducing Purkinje cell damage in the brain, which is associated with motor dysfunction as well as pain. We therefore examined gait parameters using Mouse Walker equipment which captures natural walking gait based on optical total internal reflection (TIR). Foot contacts disrupt the effect causing frustrated total internal reflection (fTIR) resulting in illuminated points of contact detected by a high-speed camera (Lumenera Lt425C) and a high-performance recording software (StreamPix 7, Norpix). Gait-related parameters were extracted using MouseWalker software. Sickle mice showed significantly lower walking speed (p=0.0062), increased stance duration and stance instability (p= 0.001 and 0.030, respectively) compared to control mice. Gait parameters correlated positively for mechanical hyperalgesia with stance duration (r=0.72, p=0.004) and negatively for grip force with stance instability and stance duration (r = -0.70, p=0.0075 and r = -0.84, p=0.0002). Since decreased grip force demonstrates increased hyperalgesia, deep hyperalgesia also correlates positively with stance instability and stance duration. Thus, Purkinje cell damage is associated with alterations in gait and pain in sickle mice. Since BDA-410 inhibited Purkinje cell damage and reduced pain, it demonstrates the potential of targeting calpain-1 as a treatable target to develop novel therapeutics for treating pain and organ damage in SCD. These data also suggest that gait measures may serve as biomarkers for Purkinje cell damage and pain. We speculate that gait measures may have utility as a diagnostic and prognostic tool in the progression of SCD. BDA-410 and funding in part were provided by 1910 Genetics. Disclosures Pagare: 1910 Genetics: Employment. Nwankwo:1910 Genetics: Equity Ownership. Gupta:1910 Genetics: Research Funding.
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Goldina, N. D. „Calculation of the reflection coefficient of metal-dielectric structures in frustrated total internal reflection“. Optoelectronics, Instrumentation and Data Processing 45, Nr. 6 (Dezember 2009): 571–75. http://dx.doi.org/10.3103/s8756699009060120.

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Perel'man, Mark E. „Theory of frustrated total internal reflection: Superluminal singularities of optical waveguides“. Physics Letters A 373, Nr. 6 (Februar 2009): 648–52. http://dx.doi.org/10.1016/j.physleta.2008.12.021.

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37

Smith, Nathan D., und James S. Sharp. „Accessible biometrics: A frustrated total internal reflection approach to imaging fingerprints“. Science & Justice 57, Nr. 3 (Mai 2017): 193–98. http://dx.doi.org/10.1016/j.scijus.2017.03.003.

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38

Li, Chun-Fang, und Qi Wang. „Duration of tunneling photons in a frustrated-total-internal-reflection structure“. Journal of the Optical Society of America B 18, Nr. 8 (01.08.2001): 1174. http://dx.doi.org/10.1364/josab.18.001174.

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39

Beddows, David C. S., Ben C. Griffiths, Ota Samek und Helmut H. Telle. „Application of frustrated total internal reflection devices to analytical laser spectroscopy“. Applied Optics 42, Nr. 30 (20.10.2003): 6006. http://dx.doi.org/10.1364/ao.42.006006.

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40

Chen, Xi, Xiao-Jing Lu, Pei-Liang Zhao und Qi-Biao Zhu. „Energy flux and Goos–Hänchen shift in frustrated total internal reflection“. Optics Letters 37, Nr. 9 (30.04.2012): 1526. http://dx.doi.org/10.1364/ol.37.001526.

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41

Zanoni, Andrea, Pierre Garbo, Pierangelo Masarati und Giuseppe Quaranta. „Frustrated Total Internal Reflection Measurement System for Pilot Inceptor Grip Pressure“. Sensors 23, Nr. 14 (11.07.2023): 6308. http://dx.doi.org/10.3390/s23146308.

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Sensing the interaction between the pilot and the control inceptors can provide important information about the pilot’s activity during flight, potentially enabling the objective measurement of the pilot workload, the application of preventive actions against loss of situational awareness, and the identification of the insurgence of adverse couplings with the vehicle dynamics. This work presents an innovative pressure-sensing device developed to be seamlessly integrated into the grips of conventional aircraft control inceptors. The sensor, based on frustrated total internal reflection of light, is composed of low-cost elements and can be easily manufactured to be applicable to different hand pressure ranges. The characteristics of the sensor are first demonstrated in laboratory calibration tests. Subsequently, applications in flight simulator testing are presented, focusing on the objective representation of the pilot’s instantaneous workload.
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42

Ryu, Meguya, Soon Hock Ng, Vijayakumar Anand, Stefan Lundgaard, Jingwen Hu, Tomas Katkus, Dominique Appadoo et al. „Attenuated Total Reflection at THz Wavelengths: Prospective Use of Total Internal Reflection and Polariscopy“. Applied Sciences 11, Nr. 16 (19.08.2021): 7632. http://dx.doi.org/10.3390/app11167632.

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Capabilities of the attenuated total reflection (ATR) at THz wavelengths for increased sub-surface depth characterisation of (bio-)materials are presented. The penetration depth of a THz evanescent wave in biological samples is dependent on the wavelength and temperature and can reach 0.1–0.5 mm depth, due to the strong refractive index change ∼0.4 of the ice-water transition; this is quite significant and important when studying biological samples. Technical challenges are discussed when using ATR for uneven, heterogeneous, high refractive index samples with the possibility of frustrated total internal reflection (a breakdown of the ATR reflection mode into transmission mode). Local field enhancements at the interface are discussed with numerical/analytical examples. Maxwell’s scaling is used to model the behaviour of absorber–scatterer inside the materials at the interface with the ATR prism for realistic complex refractive indices of bio-materials. The modality of ATR with a polarisation analysis is proposed, and its principle is illustrated, opening an invitation for its experimental validation. The sensitivity of the polarised ATR mode to the refractive index between the sample and ATR prism is numerically modelled and experimentally verified for background (air) spectra. The design principles of polarisation active optical elements and spectral filters are outlined. The results and proposed concepts are based on experimental conditions at the THz beamline of the Australian Synchrotron.
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43

Zhukova, E. V., V. M. Zolotarev, N. B. Margaryants und L. P. Shishatskaya. „Using frustrated total internal reflection spectroscopy to study color centers in crystals“. Journal of Optical Technology 66, Nr. 1 (01.01.1999): 46. http://dx.doi.org/10.1364/jot.66.000046.

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44

Mamedov, R. K. „Methods and technology of frustrated-total-internal-reflection spectroscopy using thermoplastic glasses“. Journal of Optical Technology 71, Nr. 10 (01.10.2004): 685. http://dx.doi.org/10.1364/jot.71.000685.

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45

Goldina, N. D. „Frustrated total internal reflection from thin-layer structures with a metal film“. Optics and Spectroscopy 106, Nr. 5 (Mai 2009): 748–52. http://dx.doi.org/10.1134/s0030400x0905021x.

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46

Luo, Li, Chaoyang Li und Tingting Tang. „Tunneling mode in a frustrated total internal reflection structure with hyperbolic metamaterial“. Superlattices and Microstructures 98 (Oktober 2016): 121–28. http://dx.doi.org/10.1016/j.spmi.2016.08.016.

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47

Denker, B. I., Vyacheslav V. Osiko, S. E. Sverchkov, Yu E. Sverchkov, A. P. Fefelov und S. I. Khomenko. „Highly efficient erbium glass lasers withQswitching based on frustrated total internal reflection“. Soviet Journal of Quantum Electronics 22, Nr. 6 (30.06.1992): 500–503. http://dx.doi.org/10.1070/qe1992v022n06abeh003507.

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48

Syrneva, Aleksandra S., Vladimir V. Chesnokov und Dimitry V. Chesnokov. „Research on Terahertz Filters Employing the Effect of Frustrated Total Internal Reflection“. Key Engineering Materials 437 (Mai 2010): 281–85. http://dx.doi.org/10.4028/www.scientific.net/kem.437.281.

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The optical filter under development employing frustrated total internal reflection is a micromechanical device containing two silicon rectangular prisms. There is flat silicon plane among hypotenuse edges of the prisms. The silicon plane is a Fabry-Perot resonator, with clearances h1 among the plate and prism edges being its mirrors. Theoretical resolution of the optical filter would be R ≈ 1,5∙103 if h1 = 50 µm and R ≈ 3∙105 if h1 = 100 µm with the thickness of the silicon plane being h = 65 µm; wavelength λ = 100 µm; free spectral region Δλ/λ ≈ 0,3…0,4, transmission in the maximum of spectral characteristics 0,6 (provided input and output silicon prism legs bloom).
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49

Lavatelli, Alberto, Andrea Zanoni, Emanuele Zappa und Alfredo Cigada. „On the Design of Force Sensors Based on Frustrated Total Internal Reflection“. IEEE Transactions on Instrumentation and Measurement 68, Nr. 10 (Oktober 2019): 4065–74. http://dx.doi.org/10.1109/tim.2018.2885604.

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50

Petrov, Nikolai I. „Multispectral Narrowband Frustrated Total Internal Reflection Filter with Inclusions of Plasmonic Nanoparticles“. Photonics 11, Nr. 2 (16.02.2024): 180. http://dx.doi.org/10.3390/photonics11020180.

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A spatial-frequency thin-film filter with inclusions of nanoparticles operating in the visible range of the spectrum is investigated. The effect of nanoparticles embedded in the central and lateral layers of the frustrated total internal reflection filter on the spectral characteristics, considering the frequency dispersion, is investigated. It is shown that plasmonic effects cause the splitting of the filter bandwidth into a set of narrow-band spectral lines and the angular splitting of the incident beam into a set of output beams. It is demonstrated that due to the difference in the resonance conditions for s- and p-polarization waves, the spectral lines of transparency do not coincide, which indicates the possibility of using the filter as a polarizer.
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