PHOTONIC AND PHONONIC CRYSTALS

The propagation of waves through a structure with a periodic modulation on the length scale of the wavelength is profoundly different from that of the homogeneous case. This is well known in solid state physics where the periodicity is responsible for the formation of energy bands and energy gaps of electron states in metal, semiconductor, and insulator crystals. Recently, there is also a lot of interest in the propagation of classical waves (electromagnetic, elastic) in inhomogeneous media with a periodic structuring on a macroscopic scale.

Photonic crystals are composite materials with a permittivity or/and a permeability which is a periodic function of the position, with a period comparable to the wavelength of light. A most interesting aspect of such materials arises from the possibility of frequency regions, known as photonic gaps, over which there can be no propagation of light in the crystal whatever the direction of propagation; a phenomenon which can have many and important applications in optoelectronics. In relation to basic physics, photonic crystals are interesting in a number of ways. For example, they can be the starting point in a process of gradual introduction of disorder and a study of consequent phenomena, including Anderson localization. Among the methods suggested for the calculation of photonic bands, the so-called on-shell methods appear to be numerically efficient and at the same time allow the calculation of the transmission, reflection, and absorption coefficients of light, of given frequency, incident on a slab of the photonic crystal. The on-shell methods apply equally well to non-absorbing systems and to absorbing ones; they can also deal with systems containing strongly dispersive materials such as real metals. Such a method, and a powerful computer program for its implementation, has been developed by our group.

Band formation in periodic structures also pertains to elastic wave propagation. Composite materials with elastic coefficients which are periodic functions of the position are known as phononic crystals and have properties which mirror those of photonic crystals and corresponding applications too. With an appropriate choice of the parameters involved one may obtain phononic crystals with absolute frequency gaps in selected regions of frequency. An elastic wave, whose frequency lies within an absolute gap of a phononic crystal, will be completely reflected by it; from which follows the possibility of constructing non-absorbing mirrors of elastic waves and vibration-free cavities which might be useful in high-precision mechanical systems operating in a given frequency range. And in relation to basic physics, one can use elastic waves to study phenomena such as those associated with disorder, in more or less the same manner as with electromagnetic waves. An on-shell method for the calculation of frequency bands and transmission coefficients of phononic crystals, and a computer program for its implementation, has been developed by our group.

Our current research activities in the field of classical wave propagation in inhomogeneous media include: metallodielectric and polaritonic photonic crystals, waveguiding of electromagnetic and elastic waves, effects of disorder in photonic and phononic crystals, plasmonics, metamaterials, spontaneous emission in photonic nanostructures, acousto-optic interactions in phoxonic cavities, chiral composites, magnetophotonic and magnetoplasmonic crystals, etc...

Publications in refereed journals

1.	Scattering of light by a two-dimensional array of spherical particles on a substrate
1.	N. Stefanou and A. Modinos, J. Phys.: Condens. Matter 3, 8135 (1991)
2.	Optical properties of thin discontinuous metal films
2.	N. Stefanou and A. Modinos, J. Phys.: Condens. Matter 3, 8149 (1991).
3.	Optical properties of a two-dimensional array of metallic spheres on a substrate
3.	A. Modinos and N. Stefanou, Acta Physica Polonica A 81, 91 (1992).
4.	Light scattering by non-spherical plasma particles
4.	V. Karathanos, A. Modinos, and N. Stefanou, J. Physique I 2, 1279 (1992)
5.	Scattering of electromagnetic waves by periodic structures
5.	N. Stefanou, V. Karathanos, and A. Modinos, J. Phys.: Condens. Matter 4, 7389 (1992)
6.	Optical properties of layers and crystals of spherical particles
6.	A. Modinos, V. Karathanos, and N. Stefanou, Appl. Surf. Sci. 65-66, 13 (1993)
7.	Scattering of electromagnetic waves by a disordered two-dimensional array of spheres
7.	N. Stefanou and A. Modinos, J. Phys.: Condens. Matter 5, 8859 (1993)
8.	Planar defects in photonic crystals
8.	V. Karathanos, A. Modinos, and N. Stefanou, J. Phys.: Condens. Matter 6, 6257 (1994)
9.	Optical activity of photonic crystals
9.	V. Karathanos, N. Stefanou, and A. Modinos, J. Mod. Opt. 42, 619 (1995)
10.	Localized electromagnetic modes in nonlinear superlattices
10.	A. Modinos and N. Stefanou, Phys. Rev. B 54, 16452 (1996)
11.	Theoretical analysis of the photonic band structure of face-centred cubic colloidal crystals
11.	V. Yannopapas, N. Stefanou, and A. Modinos, J. Phys.: Condens. Matter 9, 10261 (1997)
12.	Inactive frequency bands in photonic crystals
12.	V. Karathanos, J. Mod. Opt. 45, 1751 (1998)
13.	Impurity bands in photonic insulators
13.	N. Stefanou and A. Modinos, Phys. Rev. B 57 , 12127 (1998)
14.	Heterostructures of photonic crystals: frequency bands and transmission coefficients
14.	N. Stefanou, V. Yannopapas, and A. Modinos, Comput. Phys. Commun. 113, 49 (1998)
15.	Photonic crystals of chiral spheres
15.	I. E. Psarobas, N. Stefanou, and A. Modinos, J. Opt. Soc. Am. A 16, 343 (1999)
16.	Effective-medium description of dielectric-chiral photonic crystals
16.	I. E. Psarobas, Opt. Commun. 162, 21 (1999)
17.	Optical properties of metallodielectric photonic crystals
17.	V. Yannopapas, A. Modinos, and N. Stefanou, Phys. Rev. B 60, 5359 (1999)
18.	Scattering of electromagnetic waves by nearly periodic structures
18.	A. Modinos, V. Yannopapas, and N. Stefanou, Phys. Rev. B 61, 8099 (2000)
19.	Scattering of elastic waves by periodic arrays of spherical bodies
19.	I. E. Psarobas, N. Stefanou, and A. Modinos, Phys. Rev. B 62, 278 (2000)
20.	Phononic crystals with planar defects
20.	I. E. Psarobas, N. Stefanou, and A. Modinos, Phys. Rev. B 62, 5536 (2000)
21.	MULTEM2: A new version of the program for transmission and band-structure calculations of photonic crystals
21.	N. Stefanou, V. Yannopapas, and A. Modinos, Comput. Phys. Commun. 132, 189 (2000)
22.	On wave propagation in inhomogeneous systems
22.	A. Modinos, N. Stefanou, I. E. Psarobas, and V.Yannopapas, Physica B: Condens. Matter 296, 167 (2001)
23.	Applications of the layer-KKR method to photonic crystals
23.	A. Modinos, N. Stefanou, and V. Yannopapas, Opt. Express 8, 197 (2001)
24.	Optical transparency of mesoporous metals
24.	N. Stefanou, A. Modinos, and V. Yannopapas, Solid State Commun. 118, 69 (2001)
25.	Effect of stacking faults on the optical properties of inverted opals
25.	V. Yannopapas, N. Stefanou, and A. Modinos, Phys. Rev. Lett. 86, 4811 (2001)
26.	Viscoelastic response of sonic band-gap materials
26.	I. E. Psarobas, Phys. Rev. B 64, art. no. 012303 (2001)
27.	Scattering and absorption of light by periodic and nearly periodic metallodielectric structures
27.	V. Yannopapas, A. Modinos, and N. Stefanou, Opt. Quant. Electron. 34, 227 (2002)
28.	Acoustic Properties of Colloidal Crystals
28.	I. E. Psarobas, A. Modinos, R. Sainidou, and N. Stefanou, Phys. Rev. B 65, art. no. 064307 (2002)
29.	Waveguides of defect chains in photonic crystals
29.	V. Yannopapas, A. Modinos, and N. Stefanou, Phys. Rev. B 65, art. no. 235201 (2002)
30.	Scattering of elastic waves by a periodic monolayer of spheres
30.	R. Sainidou, N. Stefanou, I. E. Psarobas, and A. Modinos, Phys. Rev. B 66, art. no. 024303 (2002)
31.	Elastic band gaps in a fcc lattice of mercury spheres in aluminum
31.	I. E. Psarobas and M. M. Sigalas, Phys. Rev. B 66, art. no. 052302 (2002)
32.	Formation of absolute frequency gaps in three-dimensional solid phononic crystals
32.	R. Sainidou, N. Stefanou, and A. Modinos, Phys. Rev. B 66, art. no. 212301 (2002)
33.	Anderson localization of light in inverted opals
33.	V. Yannopapas, A. Modinos, and N. Stefanou, Phys. Rev. B 68, art. no. 193205 (2003)
34.	Optical excitation of coupled waveguide-particle plasmon modes: a theoretical analysis
34.	V. Yannopapas and N. Stefanou, Phys. Rev. B 69, art. no. 012408 (2004)
35.	Green's function formalism for phononic crystals
35.	R. Sainidou, N. Stefanou, and A. Modinos, Phys. Rev. B 69, art. no. 064301 (2004)
36.	A layer-multiple-scattering method for phononic crystals and heterostructures of such
36.	R. Sainidou, N. Stefanou, I. E. Psarobas, and A. Modinos, Comput. Phys. Commun. 166, 197 (2005)
37.	Optical properties of a periodic monolayer of metallic nanospheres on a dielectric waveguide
37.	G. Gantzounis, N. Stefanou, and V. Yannopapas, J. Phys.: Condens. Matter 17, 1791 (2005)
38.	Widening of phononic transmission gaps via Anderson localization
38.	R. Sainidou, N. Stefanou, and A. Modinos, Phys. Rev. Lett. 94, art. no. 205503 (2005)
39.	Theoretical analysis of three-dimensional polaritonic photonic crystals
39.	G. Gantzounis and N. Stefanou, Phys. Rev. B 72, art. no. 075107 (2005)
40.	Scattering of light by a periodic array of metallic nanoparticles on a waveguide
40.	N. Stefanou, G. Gantzounis, and V. Yannopapas, J. Phys.: Conf. Series 10, 131 (2005)
41.	Classical vibrational modes in phononic lattices: theory and experiment
41.	M. M. Sigalas, M. S. Kushwaha, E. N. Economou, M. Kafesaki, I. E. Psarobas, and W. Steurer, Z. Kristallogr. 220, 765 (2005)
42.	Photonic crystals: a novel class of functional materials
42.	A. Modinos and N. Stefanou, Mat. Sci. (Poland) 23, 877 (2005)
43.	The layer multiple-scattering method applied to phononic crystals
43.	R. Sainidou, N. Stefanou, I. E. Psarobas, and A. Modinos, Z. Kristallogr. 220, 848 (2005)
44.	Layer-multiple-scattering method for photonic crystals of nonspherical particles
44.	G. Gantzounis and N. Stefanou, Phys. Rev. B 73, art. no. 035115 (2006)
45.	Guided and quasiguided elastic waves in phononic crystal slabs
45.	R. Sainidou and N. Stefanou, Phys. Rev. B 73, art. no. 184301 (2006)
46.	Low-frequency absolute gaps in the phonon spectrum of macrostructured elastic media
46.	N. Stefanou, R. Sainidou, and A. Modinos, Rev. Adv. Mater. Sci. 12, 46 (2006)
47.	Cavity-plasmon waveguides: Multiple scattering calculations of dispersion in weakly coupled dielectric nanocavities in a metallic host material
47.	G. Gantzounis and N. Stefanou, Phys. Rev. B 74, art. no. 085102 (2006)
48.	Observation and tuning of hypersonic bandgaps in colloidal crystals
48.	W. Cheng, J. Wang, U. Jonas, G. Fytas, and N. Stefanou, Nature Mater. 5, 830 (2006)
49.	Linear chain of weakly coupled defects in a three-dimensional phononic crystal: A model acoustic waveguide
49.	R. Sainidou, N. Stefanou, and A. Modinos, Phys. Rev. B 74, art. no. 172302 (2006)
50.	Hypersonic acoustic excitations in binary colloidal crystals: Big versus small hard sphere control
50.	G. Tommaseo, G. Petekidis, W. Steffen, G. Fytas, A.B. Schofield, and N. Stefanou, J. Chem. Phys. 126, art. no. 014707 (2007)
51.	Propagation of electromagnetic waves through microstructured polar materials
51.	G. Gantzounis and N. Stefanou, Phys. Rev. B 75, art. no. 193102 (2007)
52.	Elastic properties and glass transition of supported polymer thin films
52.	W. Cheng, R. Sainidou, P. Burgardt, N. Stefanou, A. Kiyanova, M. Efremov, G. Fytas, and P. F. Nealey, Macromolecules 40, 7283 (2007)
53.	Tight-binding description of single-mode cavity-plasmon waveguides in the frequency and time domain
53.	G. Gantzounis and N. Stefanou, J. Phys.: Condens. Matter 20, 015202 (2008)
54.	Optical properties of periodic structures of metallic nanodisks
54.	G. Gantzounis, N. Stefanou, and N. Papanikolaou, Phys. Rev. B 77, art. no. 035101 (2008)
55.	Collective plasmonic modes in ordered assemblies of metallic nanoshells
55.	C. Tserkezis, G. Gantzounis, and N. Stefanou, J. Phys.: Condens. Matter 20, 075232 (2008)
56.	Simultaneous occurrence of structure-directed and particle resonance-induced phononic gaps in colloidal films
56.	T. Still, W. Cheng, M. Retsch, R. Sainidou, J. Wang, U. Jonas, N. Stefanou, and G. Fytas, Phys. Rev. Lett. 100, art. no. 194301 (2008)
57.	Calculations of the optical response of metallo-dielectric nanostructures of non-spherical particles by a layer-multiple-scattering method
57.	N. Papanikolaou, G. Gantzounis, and N. Stefanou, Proc. SPIE 6988, 69881D (2008)
58.	Plasmonic excitations in ordered assemblies of metallic nanoshells
58.	N. Stefanou, C. Tserkezis, and G. Gantzounis, Proc. SPIE 6989, 698910 (2008)
59.	Optical properties of two-dimensional periodic arrays of metallodielectric nanosandwiches
59.	N. Papanikolaou, G. Gantzounis, and N. Stefanou, Phys. Stat. Sol. (c) 5, 3701 (2008)
60.	Understanding artificial optical magnetism of periodic metal-dielectric-metal layered structures
60.	C. Tserkezis, N. Papanikolaou, G. Gantzounis, and N. Stefanou, Phys. Rev. B 78, art. no. 165114 (2008)
61.	Multiple-scattering calculations for plasmonic nanostructures
61.	N. Stefanou, G. Gantzounis, and C. Tserkezis, Int. J. Nanotechnol. 6, 137 (2009)
62.	Negative effective permeability of multilayers of ordered arrays of metal-dielectric nanosandwiches
62.	C. Tserkezis, N. Stefanou, G. Gantzounis, and N. Papanikolaou, Proc. SPIE 7353, 735305 (2009)
63.	Effective parameters for periodic photonic structures of resonant elements
63.	C. Tserkezis, J. Phys.: Condens. Matter 21, 155404 (2009)
64.	Tailoring plasmons with metallic nanorod arrays
64.	C. Tserkezis, N. Papanikolaou, E. Almpanis, and N. Stefanou, Phys. Rev. B 80, art. no. 125124 (2009)
65.	Retrieving local effective constitutive parameters for anisotropic photonic crystals
65.	C. Tserkezis and N. Stefanou, Phys. Rev. B 81, art. no. 115112 (2010)
66.	Absolute spectral gaps for infrared light and hypersound in three-dimensional metallodielectric phoxonic crystals
66.	N. Papanikolaou, I.E. Psarobas, and N. Stefanou, Appl. Phys. Lett. 96, art. no. 231917 (2010)
67.	Plasmonic nanostructures and optical metamaterials: Studies by the layer-multiple-scattering method
67.	N. Stefanou, N. Papanikolaou, and C. Tserkezis, Physica B: Condens. Matter 405, 2967 (2010)
68.	Effective optical parameters of thin-film and bulk metamaterials of metallodielctric nanosandwiches
68.	C. Tserkezis, N. Stefanou, and N. Papanikolaou, Opt. Commun. 283, 4074 (2010)
69.	Uniaxial crystals of metallodielectric nanosandwiches: Effective optical parameters and negative refraction
69.	C. Tserkezis, and N. Stefanou, J. Opt. 12, 115103 (2010)
70.	Versatile phononic slabs
70.	I. E. Psarobas, IUTAM Bookseries 26 Part 3, 175 (2010)
71.	Extraordinary refractive properties of photonic crystals of metallic nanorods
71.	C. Tserkezis, N. Stefanou, and N. Papanikolaou, J. Opt. Soc. Am. B 27, 2620 (2010)
72.	Enhanced acousto-optic interactions in a one-dimensional phoxonic cavity
72.	I. E. Psarobas, N. Papanikolaou, N. Stefanou, B. Djafari-Rouhani, B. Bonello, and V. Laude, Phys. Rev. B 82, art. no. 174303 (2010)
73.	Collective hypersonic excitations in strongly multiple scattering colloids
73.	T. Still, G. Gantzounis, D. Kiefer, G. Hellmann, R. Sainidou, G. Fytas, and N. Stefanou, Phys. Rev. Lett. 106, art. no. 175505 (2011)
74.	PhoXonic architectures for tailoring the acousto-optic interaction
74.	N. Papanikolaou, I. E. Psarobas, G. Gantzounis, E. Almpanis, N. Stefanou, B. Djafari-Rouhani, B. Bonello, V. Laude, and A. Martinez, Proc. SPIE 8071, 80710Z (2011)
75.	Multiple-scattering calculations for layered phononic structures of nonspherical particles
75.	G. Gantzounis, N. Papanikolaou, and N. Stefanou, Phys. Rev. B 83, art. no. 214301 (2011)
76.	Photonic eigenmodes and light propagation in periodic structures of chiral nanoparticles
76.	A. Christofi, N. Stefanou, and G. Gantzounis, Phys. Rev. B 83, art. no. 245126 (2011)
77.	Spiral-staircase photonic structures of metallic nanorods
77.	A. Christofi, N. Stefanou, G. Gantzounis, and N. Papanikolaou, Phys. Rev. B 84, art. no. 125109 (2011)
78.	Photonic surface states in plasmonic crystals of metallic nanoshells
78.	C. Tserkezis, N. Stefanou, G. Gantzounis, and N. Papanikolaou, Phys. Rev. B 84, art. no. 115455 (2011)
79.	Nonlinear interactions between high-Q optical and acoustic modes in dielectric particles
79.	G. Gantzounis, N. Papanikolaou, and N. Stefanou, Phys. Rev. B 84, art. no. 104303 (2011)
80.	Negative refraction in plasmonic crystals of metallic nanoshells
80.	C. Tserkezis and N. Stefanou, Metamaterials 5, 169 (2011)
81.	Dynamically tuned zero-gap phoXonic systems
81.	I. E. Psarobas and V. Yannopapas, Proc. SPIE 8346, 83460K (2012)
82.	Optical modes of chiral photonic composites
82.	A. Christofi, N. Stefanou, and S. Thanos, Microelectron. Eng. 90, 152 (2012)
83.	Light modulation in phoxonic nanocavities
83.	N. Papanikolaou, I.E. Psarobas, N. Stefanou, B. Djafari-Rouhani, B. Bonello, and V. Laude, Microelectron. Eng. 90, 155 (2012)
84.	Calculation of waveguide modes in linear chains of metallic nanorods
84.	C. Tserkezis and N. Stefanou, J. Opt. Soc. Am. B 29, 827 (2012)
85.	Photonic structures of metal-coated chiral spheres
85.	A. Christofi and N. Stefanou, J. Opt. Soc. Am. B 29, 1165 (2012)
86.	Helical assemblies of plasmonic nanorods as chiral metamaterials
86.	A. Christofi, N. Stefanou, G. Gantzounis, and N. Papanikolaou, Proc. SPIE 8423, 84230A (2012)
87.	Acousto-optic interaction enhancement in dual photonic-phononic cavities
87.	N. Papanikolaou, E. Almpanis, G. Gantzounis, and N. Stefanou, Proc. SPIE 8425, 84250M (2012)
88.	Giant optical activity of helical architectures of plasmonic nanorods
88.	A. Christofi, N. Stefanou, G. Gantzounis, and N. Papanikolaou, J. Phys. Chem. C 116, 16674 (2012)
89.	Tuning the spontaneous light emission in phoxonic cavities
89.	E. Almpanis, N. Papanikolaou, G. Gantzounis, and N. Stefanou, J. Opt. Soc. Am. B 29, 2567 (2012)
90.	Diffractive chains of plasmonic nanolenses: Combining near-field focusing and collective enhancement mechanisms
90.	E. Almpanis, N. Papanikolaou, B. Auguié, C. Tserkezis, and N. Stefanou, Opt. Lett. 37, 4624 (2012)
91.	Nonreciprocal optical response of helical periodic structures of plasma spheres in a static magnetic field
91.	A. Christofi and N. Stefanou, Phys. Rev. B 87, art. no. 115125 (2013)
92.	Nonreciprocal photonic surface states in periodic structures of magnetized plasma nanospheres
92.	A. Christofi and N. Stefanou, Phys. Rev. B 88, art. no. 125133 (2013)
93.	Strong magnetochiral dichroism of helical structures of garnet particles
93.	A. Christofi and N. Stefanou, Opt. Lett. 38, 4629 (2013)
94.	Birefringent phononic structures
94.	I. E. Psarobas, D. A. Exarchos, and T. E. Matikas, AIP Advances 4, art. no. 124307 (2014)
95.	Layer multiple scattering calculations for nonreciprocal photonic structures
95.	A. Christofi and N. Stefanou, Int. J. Mod. Phys. B 28, art. no. 1441012 (2014)
96.	Periodic structures of magnetic garnet particles for strong Faraday rotation enhancement
96.	A. Christofi, N. Stefanou, and N. Papanikolaou, Phys. Rev. B 89, art. no. 214410 (2014)
97.	Multiple scattering calculations for nonreciprocal planar magnetoplasmonic nanostructures
97.	A. Christofi, C. Tserkezis, and N. Stefanou, J. Quant. Spectrosc. Radiat. Transfer 146, 34 (2014)
98.	Nonreciprocal guided modes in photonic crystals of magnetic garnet particles with a planar defect
98.	A. Christofi, and N. Stefanou, J. Opt. Soc. Am. B 31, 2104 (2014)
99.	Breakdown of the linear acousto-optic interaction regime in phoxonic cavities
99.	E. Almpanis, N. Papanikolaou, and N. Stefanou, Opt. Express 22, 31595 (2014)
100.	Chiral phononic structures
100.	I. E. Psarobas, D. A. Exarchos, and T. E. Matikas, Proc. SPIE 9436, 94360Q (2015)
101.	Strong circular dichroism of core-shell magnetoplasmonic nanoparticles
101.	P. Varytis, N. Stefanou, A. Christofi, and N. Papanikolaou, J. Opt. Soc. Am. B 32, 1063 (2015)
102.	The three-dimensional phononic crystals
102.	B. Assouar, R. Sainidou, and I. E. Psarobas, Phononic Crystals: Fundamentals and Applications Chapter 3, 51 (2015)
103.	Silver-coated metallic and dielectric magnetic nanospheres: Localized surface plasmons and circular dichroism
103.	P. Varytis and N. Stefanou, Opt. Commun. 360, 40 (2016)
104.	Dual photonic-phononic nanocavities for tailoring the acousto-optic interaction
104.	N. Papanikolaou, E. Almpanis, G. Gantzounis, A. Christofi, L. Athanasekos, and N. Stefanou, Microelectron. Eng. 159, 80 (2016)
105.	Plasmon-driven large Hall photon currents in light scattering by a core-shell magnetoplasmonic nanosphere
105.	P. Varytis and N. Stefanou, J. Opt. Soc. Am. B 33, 1286 (2016)
106.	Enhanced Faraday rotation by crystals of core-shell magnetoplasmonic nanoparticles
106.	P. Varytis, P. A. Pantazopoulos, and N. Stefanou, Phys. Rev. B 93, 214423 (2016)
107.	Molecular fluorescence enhancement in plasmonic environments: Exploring the role of nonlocal effects
107.	C. Tserkezis, N. Stefanou, M. Wubs, and N. A. Mørtensen, Nanoscale 8, 17532 (2016)
108.	Phononic crystals of poroelastic spheres
108.	A. Alevizaki, R. Sainidou, P. Rembert, B. Morvan, and N. Stefanou, Phys. Rev. B 94, 174306 (2016)
109.	Metal-nanoparticle arrays on a magnetic garnet film for tunable plasmon-enhanced Faraday rotation
109.	E. Almpanis, P. A. Pantazopoulos, N. Papanikolaou, V. Yannopapas, and N. Stefanou, J. Opt. Soc. Am. B 33, 2609 (2016)
110.	Slow-photon enhancement of dye sensitized TiO₂ photocatalysis
110.	A. Toumazatou, M. K. Arfanis, P. A. Pantazopoulos, A. G. Kontos, P. Falaras, N. Stefanou, and V. Likodimos, Mater. Lett. 197, 123 (2017)
111.	Acoustic properties of double-porosity granular polymers
111.	A. Alevizaki, R. Sainidou, P. Rembert, B. Morvan, and N. Stefanou, Phys. Rev. B 95, 214306 (2017)
112.	A birefringent etalon enhances the Faraday rotation of thin magneto-optical films
112.	E. Almpanis, P. A. Pantazopoulos, N. Papanikolaou, V. Yannopapas, and N. Stefanou, J. Opt. 19, 075102 (2017)
113.	Photomagnonic nanocavities for strong light–spin wave interaction
113.	P. A. Pantazopoulos, N. Stefanou, E. Almpanis, and N. Papanikolaou, Phys. Rev. B 96, 104425 (2017)
114.	Metal-coated magnetic nanoparticles in an optically active medium: A nonreciprocal metamaterial
114.	A. Christofi and N. Stefanou, Phys. Rev. B 97, 125129 (2018)
115.	Strong magnetochiral dichroism in chiral/magnetic layered heterostructures
115.	A. Christofi, Opt. Lett. 43, 5741 (2018)
116.	Tailoring coupling between light and spin waves with dual photonic–magnonic resonant layered structures
116.	P. A. Pantazopoulos, N. Papanikolaou, and N. Stefanou, J. Opt. 21, 015603 (2019)
117.	Layered optomagnonic structures: Time Floquet scattering-matrix approach
117.	P. A. Pantazopoulos and N. Stefanou, Phys. Rev. B 99, 144415 (2019); Phys. Rev. B 101, 209903(E) (2020)
118.	High-efficiency triple-resonant inelastic light scattering in planar optomagnonic cavities
118.	P. A. Pantazopoulos, K. L. Tsakmakidis, E. Almpanis, G. P. Zouros, and N. Stefanou, New J. Phys. 21, 095001 (2019)
119.	Elastodynamic response of three-dimensional phononic crystals using laser Doppler vibrometry
119.	I. K. Tragazikis, D. A. Exarchos, P. T. Dalla, K. Dassios, T. E. Matikas, and I. E. Psarobas, J. Phys. D: Appl. Phys. 52, 285305 (2019)
120.	Nanographene oxide–TiO₂ photonic films as plasmon-free substrates for surface-enhanced Raman scattering
120.	D. Papadakis, A. Diamantopoulou, P. A. Pantazopoulos, D. Palles, E. Sakellis, N. Boukos, N. Stefanou, and V. Likodimos, Nanoscale 11, 21542 (2019)
121.	Scattering by a magnetized cold plasma body
121.	G. P. Zouros, G. D. Kolezas, N. Stefanou, and J. A. Roumeliotis, Proceedings of the ICEAA 2019 : Art. No. 8879315, pp. 596-599 (2019)
122.	Spherical optomagnonic microresonators: Triple-resonant photon transitions between Zeeman-split Mie modes
122.	E. Almpanis, G. P. Zouros, P. A. Pantazopoulos, K. L. Tsakmakidis, N. Papanikolaou, and N. Stefanou, Phys. Rev. B 101, 054412 (2020)
123.	Planar optomagnonic cavities driven by surface spin waves
123.	P. A. Pantazopoulos and N. Stefanou, Phys. Rev. B 101, 134426 (2020)
124.	Multipolar interactions in Si sphere metagratings
124.	E. Panagiotidis, E. Almpanis, N. Stefanou, and N. Papanikolaou, J. Appl. Phys. 128, 093103 (2020)
125.	Light scattering by a spherical particle with a time-periodic refractive index
125.	I. Stefanou, P. A. Pantazopoulos, and N. Stefanou, J. Opt. Soc. Am. B 38, 407 (2021)
126.	Tailoring the interaction of light with static and dynamic magnetization fields in stratified nanostructures
126.	P. A. Pantazopoulos and N. Stefanou, in Optomagnonic Structures: Novel Architectures for Simultaleous Control of Light and Spin Waves, Chapter 1, pp. 1-77 (2021)
127.	EBCM for electromagnetic modeling of gyrotropic BoRs
127.	G. P. Zouros, G. D. Kolezas, N. Stefanou, and T. Wriedt, IEEE Trans. Antennas Propag. 69, 6934 (2021)
128.	Tunable multidispersive bands of inductive origin in piezoelectric phononic plates
128.	K. Mekrache, R. Sainidou, P. Rembert, N. Stefanou, and B. Morvan, J. Appl. Phys. 130, 195106 (2021)
129.	Nonspherical optomagnonic resonators for enhanced magnon-mediated optical transitions
129.	E. Almpanis, N. Papanikolaou, and N. Stefanou, Phys. Rev. B 104, 214429 (2021)
130.	Nonreciprocal acoustic transmission through dynamic multilayer structures
130.	A. Paliovaios and N. Stefanou, Phys. Rev. B 106, 024101 (2022)
131.	Inelastic light scattering from a dielectric sphere with a time-varying radius
131.	E. Panagiotidis, E. Almpanis, N. Papanikolaou, and N. Stefanou, Phys. Rev. B 106, 024101 (2022)
132.	Optical transitions and nonreciprocity in spatio-temporally periodic layers of spherical particles
132.	E. Panagiotidis, E. Almpanis, N. Papanikolaou, and N. Stefanou, Adv. Opt. Mater. 11, 2202812 (2023)
133.	Light scattering by a periodically time-modulated object of arbitrary shape: The extended boundary condition method
133.	N. Stefanou, I. Stefanou, E. Almpanis, N. Papanikolaou, P. Garg, and C. Rockstuhl, J. Opt. Soc. Am. B 40, 2842 (2023)
134.	Two-step homogenization of spatiotemporal metasurfaces using an eigenmode-based approach
134.	P. Garg, A. G. Lamprianidis, S. Rahman, N. Stefanou, E. Almpanis, N. Papanikolaou, B. Verfürth, and C. Rockstuhl, Opt. Mater. Express 14, 549 (2024)