How to search?
advanced search

Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 10
items per page: 25 50 75
Sort by:

Features of using the power skiving method for multi-pass cutting of internal gears

Ihor Hrytsay Andrii Slipchuk
Archive of Mechanical Engineering | 2024 | Articles accepted | DOI: 10.24425/ame.2024.149636
Keywords internal gear power skiving passes chips forces
Download PDF Download RIS Download Bibtex

Abstract

The paper presents the results of a simulation on a 3D model of undeformed chips and cutting forces during three-pass gear cutting using the power skiving method. At the level of individual blades and teeth in successive angular cutting positions, the main component of the cutting force and the tangential force on the cutter axis are shown. The analysis of the forces acting on a single gear tooth and the continuous cutting forces allowed the development of a methodology for the selection of rational cutting modes – the value of the axial feed, the number of passes with different cutting depths in order to ensure the minimum time consumption and to achieve the required accuracy of the gears in terms of the parameter of the permissible angular deviation of the profile of the cut gear. It is shown that, provided the required machining accuracy is ensured, higher productivity is achieved by increasing the axial feed at a lower depth of cut and increasing the number of passes, rather than by reducing the feed and increasing the depth of cut.
Go to article

Authors and Affiliations

Ihor Hrytsay
1
ORCID: ORCID
Andrii Slipchuk
1
ORCID: ORCID
  1. Lviv Polytechnic National University, Lviv, Ukraine

The Influence of Changes in Roll Pass Design on the State of Residual Stresses in Railway Rails – Summary

S. Żak D. Woźniak
Archives of Metallurgy and Materials | 2023 | vol. 68 | No 2 | 439-446 | DOI: 10.24425/amm.2023.142420
Keywords railway rail residual stresses pass design of roll grooves pass design of straightening rollers strain gauge method
Download PDF Download RIS Download Bibtex

Abstract

The article presents the results of the last stage of work on the impact of changes in the roll pass design on the state of residual stresses in railway rails. The discussed stage includes the summary of industrial experiments of rolling 60E1 rails with a length of 120 meters using a modified pass design of roll grooves. The rolling technology has been deeply modified, ranging from the finishing stand, through the pre-finishing stand, to the semi-finishing stand. The rails in this experiment were cooled using standard cooling technology and then straightened using innovative vertical straightener shaped rollers. Residual stresses were tested using the strain gauge method and the hole-drilling strain gauge method by drilling a hole in the rail axis and at a distance of 14 millimetres from its axis. The resulting tensile stresses in the rail foot were reduced to an average level of less than 43% in relation to the requirements of the EN13674-1 standard.
Go to article

Authors and Affiliations

S. Żak
1
ORCID: ORCID
D. Woźniak
2
ORCID: ORCID
  1. ArcelorMittal Poland S.A., 92 Józefa Piłsudskiego 9 Av. 41-308 Dąbrowa Górnicza, Poland
  2. Łukasiewicz Research Network – Institute for Ferrous Metallurgy, 12 Karola Miarki Str., 44-100 Gliwice, Poland

Operation of 2+1 road with high shares of heavy vehicles

M. Kieć
Archives of Civil Engineering | 2017 | No 3 | 53-70
Keywords 2+1 road passing overtaking traffic performance traffic flow microsimulation model travel speed heavy vehicles
Download PDF Download RIS Download Bibtex

Abstract

The author investigated traffic flow quality on a new 2+1 long road bypass with an exceptionally high share of heavy vehicles in order to assess rational limits of heavy vehicle shares in traffic flow, dependent on the length of the 2+1 road and the number of passing segments in each direction. This paper presents the results of traffic flow quality analyses through the use of empirical and simulation methods for a single 2+1 road segment with additional passing lanes, as well as for the study of the entire section of the bypass – 2+1 road. Variables include analysis of travel speed distribution, platoon traffic, and amount of passing maneuvers. Results show that large passing demands lead to very high speeds (over 100 km/h) on segments with additional passing lanes. The conclusions include remarks related to the use and operation of 2+1 cross-sections with high shares of heavy vehicles.

Go to article

Authors and Affiliations

M. Kieć

Treasures of the Academy

Joanna Arvaniti
ACADEMIA. The magazine of the Polish Academy of Sciences | 2022 | No 4 (76) Images | 21-21 | DOI: 10.24425/academiaPAS.2022.144674
Keywords PAS archives exhibition for PAS’s 70th jubilee
Download PDF Download RIS Download Bibtex

Abstract

To help celebrate the Polish Academy of Sciences’ 70th anniversary, the historic Staszic Palace is hosting a commemorative exhibition showcasing some of the centerpieces of the Academy’s extensive collections.
Go to article

Authors and Affiliations

Joanna Arvaniti
1
  1. PAS Archives in Warsaw

A Study on the Influence of Reinforcement Volume on AA5083/(SiC-Gr) Hybrid Surface Composite Developed by Friction Stir Processing

Shalok Bharti Nilesh D. Ghetiya Kaushik M. Patel Kuldeep K. Saxena
Archives of Metallurgy and Materials | 2023 | vol. 68 | No 2 | 625-629 | DOI: 10.24425/amm.2023.142443
Keywords surface composites Multi-pass Friction stir processing reinforcement Hybrid Composite
Download PDF Download RIS Download Bibtex

Abstract

In this study, a hybrid surface composite of AA5083/SiC-Gr was produced by Friction Stir Processing (FSP). Reinforcement material each in 50:50 proportion was filled in the base matrix using holes method. Three different hybrid reinforcement volumes of 301.6 mm 3, 452.4 mm 3, and 603.2 mm 3 were prepared for surface composite. Optical and Scanning Electron Microscopy was used to check the quality of the prepared surface composite and homogeneous distribution of reinforcement was observed in the images. It was observed that due to better uniform distribution of reinforcement particles during 3 pass FSP, specimens with 301.6 mm 3/ reinforcement volume showed enhanced microhardness and wear properties in comparison with the other specimens. Keywords: Surface Composites; Multi-pass; Friction Stir Processing; Reinforcement; Hybrid Composite
Go to article

Authors and Affiliations

Shalok Bharti
1 2
ORCID: ORCID
Nilesh D. Ghetiya
1
ORCID: ORCID
Kaushik M. Patel
1
ORCID: ORCID
Kuldeep K. Saxena
3
ORCID: ORCID
  1. Nirma University, Institute of Technology, Department of Mechanical, Engineering, Ahmedabad, Gujarat – 382481 – India
  2. CT University, Department of Mechanical Engineering, Ludhiana, Punjab – 142024 – India
  3. Division of Research and Development, Lovely Professional University, Jalandhar, Punjab – 144001 – India

A comparative study for double pass solar air collector utilizing medial glass panel

Hussein Majeed Salih
Archive of Mechanical Engineering | 2022 | vol. 69 | No 4 | 729-747 | DOI: 10.24425/ame.2022.141524
Keywords solar air collector double-pass CFD finite volume thermal performance
Download PDF Download RIS Download Bibtex

Abstract

A numerical investigation of thermal prediction of double-pass solar air heater of-counter flow is developed in the present study. The main idea of the current study is that the collector consists of two layers of glass so that the middle layer is glass instead of the usual metal plate. The performance of double-pass solar air heater is studied for a wide range of solar radiation intensities (600, 750 and 900 W/m 2). A FORTRAN-90 program is built to simulate the mathematical model of double-pass solar air heater based on solving steady state two-dimensional Navier-Stokes equations and energy equation based on finite volume method. Turbulence effect is simulated by two equations k-ε module. The results are compared with the results of a previous experimental study and a good agreement was found. From compression calculating efficiency of the present and traditional collector for each solar intensity, it was found that the efficiency of the current collector is higher than that of the traditional one, where the efficiency of the current collector at the solar intensity of (600, 750 and 900) W/m 2 are (0.529, 0.514 and 0.503), respectively, while those of the traditional collector (0.508, 0.492 and 0.481), respectively. In addition to this, the effect of the mass flow rate on the temperature difference of the current proposed collector was studied. Three values of the mass flow rate were studied (0.009,0.018, and 0.027) kg/s at solar intensity of 750 W/m 2. From this it was found that the temperature difference decreases with increasing mass flow rate. Accordingly, the efficiency decreases
Go to article

Bibliography


[1] J.M. Jalil, A.H. Ayaal, and A.A. Hardan. Numerical investigation of thermal performance for air solar collector with multi inlets. IOP Conference Series: Materials Science and Engineering, 765:012036, 2020. doi: 10.1088/1757-899X/765/1/012036.
[2] A. Abene, V. Dubois, M. Le Ray, and A. Ouagued. Study of a solar air flat plate collector: use of obstacles and application for the drying of grape. Journal of Food Engineering, 65(1):15–22, 2004. doi: 10.1016/j.jfoodeng.2003.11.002.
[3] R.S. Gill, S. Singh, and P.P. Singh. Low cost solar air heater. Energy Conversion and Management, 57:131–142, 2012. doi: 10.1016/j.enconman.2011.12.019.
[4] A.E. Kabeel, A. Khalil, S.M. Shalaby, and M.E. Zayed. Experimental investigation of thermal performance of flat and v-corrugated plate solar air heaters with and without PCM as thermal energy storage. Energy Conversion and Management, 113:264–772, 2016. doi: 10.1016/j.enconman.2016.01.068.
[5] A. Sakhrieh and A. Al-Ghandoor. Experimental investigation of the performance of five types of solar collectors. Energy Conversion and Management, 65:715–720, 2013. doi: 10.1016/j.enconman.2011.12.038.
[6] J.M. Jalil, K.F. Sultan, and L.A. Rasheed. Numerical and experimental investigation of solar air collectors performance connected in series. Engineering and Technology Journal, 35(3):190–196, 2017.
[7] J. Assadeg J, A.H.A. Al-Waeli, A. Fudholi, and K. Sopian. Energetic and exergetic analysis of a new double pass solar air collector with fins and phase change material. Solar Energy, 226:260–271, 2021. doi: 10.1016/j.solener.2021.08.056.
[8] J.M. Jalil and S.J. Ali. Thermal investigations of double pass solar air heater with two types of porous media of different thermal conductivity. Engineering and Technology Journal, 39(1):79–88, 2021. doi: 10.30684/etj.v39i1A.1704.
[9] S. Bassem, J.M. Jalil, and S.J. Ismael. Experimental study of double pass water passage in evacuated tube with parabolic trough collector. Journal of Physics: Conference Series, 1973:012058, 2021. doi: 10.1088/1742-6596/1973/1/012058.
[10] J.M. Jalil, R.F. Nothim, and M.M. Hameed. Effect of wavy fins on thermal performance of double pass solar air heater. Engineering and Technology Journal, 39(9):1362–1368, 2021. doi: 10.30684/etj.v39i9.1775.
[11] W. Siddique, A. Raheem, M. Aqeel, S. Qayyum, T, Salamen, K. Waheed, and K. Qureshi. Evaluation of thermal performance factor for solar air heaters with artificially roughened channels. Archive of Mechanical Engineering, 68(2):195–225, 2021. doi: 10.24425/ame.2021.137048.
[12] H.K. Ghritlahre. An experimental study of solar air heater using arc shaped wire rib roughness based on energy and exergy analysis. Archives of Thermodynamics, 42(3):115–139, 2021. doi: 10.24425/ather.2021.138112.
[13] A. Kumar, Akshayveer, A.P. Singh, and O.P. Singh. Efficient designs of double-pass curved solar air heaters. Renewable Energy, 160:1105–1118, 2020. doi: 10.1016/j.renene.2020.06.115.
[14] S. Abo-Elfadl, H. Hassan, and M.F. El-Dosoky. Study of the performance of double pass solar air heater of a new designed absorber: An experimental work. Solar Energy, 198:479–489, 2020. doi: 10.1016/j.solener.2020.01.091.
[15] S. Singh. Experimental and numerical investigations of a single and double pass porous serpentine wavy wiremesh packed bed solar air heater. Renewable Energy, 145:1361–1387, 2020. doi: 10.1016/j.renene.2019.06.137.
[16] H.K. Ghritlahre and P.K. Sahu. A comprehensive review on energy and exergy analysis of solar air heaters. Archives of Thermodynamics, 41(3):183–222, 2020. doi: 10.24425/ather.2020.134577.
[17] S. Dogra, R.D. Jilte, and A. Sharma. Study of performance enhancement of single and double pass solar air heater with change in surface roughness. Journal of Physics: Conference Series, 1531:012091, 2020. doi: 10.1088/1742-6596/1531/1/012091.
[18] S. Sivakumar, K. Siva, and M. Mohanraj. Experimental thermodynamic analysis of a forced convection solar air heater using absorber plate with pin-fins. Journal of Thermal Analysis and Calorimetry, 136(1):39–47, 2019. doi: 10.1007/s10973-018-07998-5.
[19] S.M. Salih J.M. Jalil, and S.E. Najim. Experimental and numerical analysis of double-pass solar air heater utilizing multiple capsules PCM. Renewable Energy, 143:1053–1066, 2019. doi: 10.1016/j.renene.2019.05.050.
[20] S. Singh, L. Dhruw, and S. Chander. Experimental investigation of a double pass converging finned wire mesh packed bed solar air heater. Journal of Energy Storage, 21:713–723, 2019. doi: 10.1016/j.est.2019.01.003.
[21] P.T. Saravanakumar, D. Somasundaram, and M.M. Matheswaran. Thermal and thermo-hydraulic analysis of arc shaped rib roughened solar air heater integrated with fins and baffles. Solar Energy, 180:360–371, 2019. doi: 10.1016/j.solener.2019.01.036.
[22] C.A. Komolafe, I.O. Oluwaleye, O. Awogbemi, and C.O. Osueke. Experimental investigation and thermal analysis of solar air heater having rectangular rib roughness on the absorber plate. Case Studies in Thermal Engineering, 14:100442, 2019. doi: 10.1016/j.csite.2019.100442.
[23] H. Mzad, K. Bey, and R. Khelif. Investigative study of the thermal performance of a trial solar air heater. Case Studies in Thermal Engineering, 13:100373, 2019. doi: 10.1016/j.csite.2018.100373.
[24] S.S. Patel and A. Lanjewar. Exergy based analysis of solar air heater duct with W-shaped rib roughness on the absorber plate. Archives of Thermodynamics, 40(4):21–48, 2019. doi: 10.24425/ather.2019.130006.
[25] A.S. Mahmood. Experimental study on double-pass solar air heater with and without using phase change material. Journal of Engineering. 25(2):1-17. doi: 10.31026/j.eng.2019.02.01.
[26] R.K. Ravi and R.P. Saini. Effect of roughness elements on thermal and thermohydraulic performance of double pass solar air heater duct having discrete multi V-shaped and staggered rib roughness on both sides of the absorber plate. Experimental Heat Transfer, 31(1):47–67, 2018. doi: 10.1080/08916152.2017.1350217.
[27] H. Hassan and S. Abo-Elfadl. Experimental study on the performance of double pass and two inlet ports solar air heater (SAH) at different configurations of the absorber plate. Renewable Energy, 116:728–740, 2018. doi: 10.1016/j.renene.2017.09.047.
[28] S.S. Hosseini, A. Ramiar, and A.A. Ranjbar. Numerical investigation of natural convection solar air heater with different fins shape. Renewable Energy, 117:488–500, 2018. doi: 10.1016/j.renene.2017.10.052.
[29] A.P. Singh and O.P. Singh. Performance enhancement of a curved solar air heater using CFD. Solar Energy, 174:556–569, 2018. doi: 10.1016/j.solener.2018.09.053.
[30] A.M. Rasham and M.M.M. Alaskari. Thermal analysis of double-pass solar air collector with different materials of absorber plate and different dimensions of air channels. International Journal of Science and Research (IJSR), 6(8):901–908, 2017.
[31] R. Kumar and P. Chand. Performance enhancement of solar air heater using herringbone corrugated fins. Energy, 127:271–279, 2017. doi: 10.1016/j.energy.2017.03.128.
[32] M.W. Kareem, K. Habib, and S.A. Sulaiman. Comparative study of single pass collector and double pass solar collector filled with porous media. Asian Journal of Scientific Research, 6(3):445–455, 2013. doi: 10.3923/ajsr.2013.445.455.
[33] A. Fudholi, M.H. Ruslan, M.Y. Othman, M. Yahya, S. Supranto, A. Zaharim, and K. Sopian. Collector efficiency of the double-pass solar air collectors with fins. In Proceedings of the 9th WSEAS International Conference on System Science and Simulation in Engineering, pages 428–434, Japan, 2010.
[34] B.M. Ramani, A. Gupta, and R. Kumar. Performance of a double pass solar air collector. Solar Energy, 84(11):1929–1937, 2010. doi: 10.1016/j.solener.2010.07.007.
[35] H.K. Versteeg and W. Malalsekera. An Introduction to Computational Fluid Dynamics. The Finite Volume Method. Pearson Education Ltd. 1995.
[36] B.E. Launder and D.B. Spalding. The numerical computation of turbulent flows. In S.V. Patankar, A. Pollard, A.K. Singhal, and S.P. Vanka, editors: Numerical Prediction of Flow, Heat Transfer, Turbulence and Combustion, pages 96–116. Pergamon, 1983. doi: 10.1016/B978-0-08-030937-8.50016-7.
[37] S.V. Patankar. Numerical Heat Transfer and Fluid Flow. CRC Press, 2018. doi: 10.1201/9781 482234213.
[38] N.I. Dawood, J.M. Jalil, and M.K. Ahmed. Experimental investigation of a window solar air collector with circular-perforated moveable absorber plates. Journal of Physics: Conference Series, 1973:012057, 2021. doi: 10.1088/1742-6596/1973/1/012057.
[39] F. Haghighat, Z. Jiang, J.C.Y. Wang, and F. Allard. Air movement in buildings using computational fluid dynamics. Journal of Solar Energy Engineering, 114(2):84–92, 1992. doi: 10.1115/ 1.2929994.
Go to article

Authors and Affiliations

Hussein Majeed Salih
1
ORCID: ORCID
  1. Electromechanical Engineering Department, University of Technology, Iraq

Assessment of migration conditions for fish swimming through a semi-natural fish pass on the Nidzica River in Bronocice

Karol K. Plesiński Janusz M. Filipczyk Michał M. Bień Mustafa Karadağ
Journal of Water and Land Development | 2023 | No 59 | 54-65 | DOI: 10.24425/jwld.2023.147229
Keywords fish migration Nidzica River numerical modelling permeability semi-natural fish pass
Download PDF Download RIS Download Bibtex

Abstract

Fish passes are essential elements for maintaining continuity for migrating fish. Without them, fish would be unable to undertake migration to satisfy their basic life needs. These devices must meet a range of requirements related to the size of individual fish pass elements and the hydrodynamic parameters of the flowing water. Despite efforts, it is not always possible to meet these requirements. There are many causes of errors in the design and construction of fish passes, and each case should be assessed individually. The most severe consequence of these errors is the obstruction of fish migrating upstream.
In this study, an analysis of the permeability of a semi-natural fish pass was conducted for fish. This assessment was carried out using two methods. In the first approach, the required geometric dimensions of the fish pass elements were determined based on the dimensions of individuals living in the river channel. In the second approach, the dimensions were extracted from publications dedicated to slot fish passes, as the studied object resembles such a design.
The analysis revealed that the fish pass does not fulfil its intended role. All fish species living in the Nidzica River channel face difficulties in passing through the fish pass, including the brook trout, for which the object is specifically designed. The main errors stem from the design and construction, resulting in exceeded values, primarily in the hydrodynamic parameters, rendering the fish pass impassable. The study also aimed to develop corrective recommendations considering the latest scientific developments.
Go to article

Authors and Affiliations

Karol K. Plesiński
1
ORCID: ORCID
Janusz M. Filipczyk
1 2
ORCID: ORCID
Michał M. Bień
1 3
ORCID: ORCID
Mustafa Karadağ
4
  1. University of Agriculture in Krakow, Faculty of Environmental Engineering and Land Surveying, al. Mickiewicza 24/28, 30-059 Kraków, Poland
  2. PBW inżynieria Sp. z o.o., Wrocław, Poland
  3. Kielce District of Polish Angling Association, Kielce, Poland
  4. Istanbul University, Faculty of Aquatic Science, Istanbul, Turkey

Modeling and Design of a Highly Efficient Switch-Mode RF/Microwave Power Amplifier Based-on Microstrip Bandpass Filter

Farzad Moloudi Omid Eslamipour Ali Khoshnoud
International Journal of Electronics and Telecommunications | 2022 | vol. 68 | No 4 | 775-781 | DOI: 10.24425/ijet.2022.143885
Keywords broadband band-pass filter (BPF) switch-mod power amplifier (PA) matching network (MN)
Download PDF Download RIS Download Bibtex

Abstract

This paper presents a broadband Switch-Mode Power Amplifier (SMPA) using a Band-Pass Filter (BPF) at the Output Matching Network (OMN). The proposed SMPA integrates a microstrip BPF as an output impedance matching network to significantly reduce the final circuit size. The microstrip lines of the filter simultaneously play the role of filtering and impedance matching. This proposed method reduces the size of the PA and reduces the power dissipation as much as possible. The BPF is placed at the output of the circuit using microstrip lines and the RT Duroid 6006 substrate. This BPF covers a wide bandwidth ranging from 3.0 GHz to 4.4 GHz. Simulation results show 9-14 dB gain with 44 - 56.6 % drain efficiency ( DE %), and the output power of 39 – 41.3 dBm would be achieved across the frequency band from 3.0 GHz to 4.4 GHz.
Go to article

Authors and Affiliations

Farzad Moloudi
1
Omid Eslamipour
1
Ali Khoshnoud
2
  1. University of Kurdistan, Iran
  2. Iran University of Science and Technology, Iran

Application and Comparison of Different Methods for Traffic Conflict Analysis – Case Study on 2+1 Roads

Salvatore Cafiso Alessandro Calvi Carmelo D'Agostino Mariusz Kieć Gianmarco Petrucci Piotr Szagała
Archives of Civil Engineering | 2021 | vol. 67 | No 1 | 619-634 | DOI: 10.24425/ace.2021.136493
Keywords surrogate measures of safety road safety SSAM passing lane 2+1 road
Download PDF Download RIS Download Bibtex

Abstract

Safety Performance Functions and Crash Modification Factors are statistically-based prediction methods that require significant efforts and long periods in crash data collection. Traffic conflict studies can mitigate this issue using a short time survey to measure the number and severity of traffic conflicts, which are regarded as surrogate safety measures. Unfortunately, they are empirical studies that can be carried out only after the implementation of a treatment. The overall objective of the present research is to investigate the performance of different methods for conflict detection and classification, considering the observed conflicts on 2+1 roads in Poland. Observations were compared with conflicts detected in simulated environments. The latter include either the Agent-Based Microsimulation (ABM) approach, or the virtual reality simulation using a Driving Simulator (DS). Conflicts were detected and classified based on video recording and analysis of vehicle trajectories in the merging area of 2+1 roads. The studies focused only on lane-changing conflicts. Locations, Post Encroachment Time and Time to Collision values of observed conflicts between vehicles were subsequently identified. Observed conflicts were compared with the ones resulting from ABM and DS, to determine whether there is a correlation between them.
Go to article

Authors and Affiliations

Salvatore Cafiso
1
ORCID: ORCID
Alessandro Calvi
2
Carmelo D'Agostino
3
Mariusz Kieć
4
Gianmarco Petrucci
5
Piotr Szagała
6
  1. University of Catania, Department of Civil Engineering & Architecture, Via Santa Sofia 64, I-95125 Catania, Italy
  2. Roma Tre University, Department of Engineering, Via Vito Volterra 62, I-00146 Rome, Italy
  3. Lund University, Department of Technology and Society, John Ericssons väg 1, 223 63 Lund, Sweden
  4. Cracow University of Technology, Faculty of Civil Engineering, 24 Warszawska Str., 31-155 Cracow, Poland
  5. Donati S.p.A., via Aurelia Antica 272, I-00165 Rome, Italy
  6. Warsaw University of Technology, Faculty of Civil Engineering, Al. Armii Ludowej 16, 00-637 Warsaw, Poland

Tissue characterization with ballistic photons: counting scattering and/or absorption centres

F. Corral M. Strojnik G. Paez
Opto-Electronics Review | 2015 | vol. 23 | No 1 | 44-52
Keywords ballistic photons interferometry single−pass coherent transmission scattering absorption tissue tissue characterization near infrared therapeutic window
Download PDF Download RIS Download Bibtex

Abstract

We describe a new method to separate ballistic from the scattered photons for optical tissue characterization. It is based on the hypothesis that the scattered photons acquire a phase delay. The photons passing through the sample without scattering or absorption preserve their coherence so they may participate in interference. We implement a Mach−Zehnder experimental setup where the ballistic photons pass through the sample with the delay caused uniquely by the sample indices of refraction. We incorporate a movable mirror on the piezoelectric actuator in the sample arm to detect the amplitude of the modulation term. We present the theory that predicts the path−integrated (or total) concentration of the scattering and absorption centres. The proposed technique may characterize samples with transmission attenuation of ballistic photons by a factor of 10-14.

Go to article

Authors and Affiliations

F. Corral
M. Strojnik
G. Paez

This page uses 'cookies'. Learn more