Scope & Background

  • Scope of LIP conferences
  • LIP2020: flyer and posters
  • Previous LIP, OPC & OPS conferences and publications
The 13th international conference series on Laser-light and Interactions with Particles (LIP) - Optical Particle Characterization follow-up ! is organized by the Institute of Physics of the Polish Academy of Sciences (IF-PAS) on August 22-28th, 2020, Warsaw, Poland. The conference is focused on interactions between laser beams and particles, from theory to practice (download the flyer), encompassing in particular the following fundamental topics :
- particle characterization methods (interferometric, holographic, polarimetric, spectral, static, dynamic,...),
- near-field, far-field and time-resolved scattering,
- plasmonics and other resonances,
- complex shaped particles and aggregates,
- multiple scattering and random media (dense,turbulent,...)
- mechanical effects of light (particle manipulation, force measurement, optical tweezer,...)
- laser beams description (contributions acoustical and quantum beams are also welcomed).
and application domains:
- two-and multiphase-flow characterization ( combustion, spray, bubbly flow...),
- aerosol science and atmospheric environment (nucleation, transport, characterization...),
- plasma and soft matter physics (nanocristallite, Coulomb crystal, colloids, aggregation, ,...),
- biomedical optical engineering (cell manipulation and properties, microrheology, ...),
- remote sensing (lidar, communication,...)

Download the flyer and posters (format A4 and A2) of the conference LIP2020:

flyer poster A2 poster A2
This conference series has been continually providing forums for promoting the interchange of new ideas on the development of advanced theories and models, as well as the latest experimental developments. Since nearly three decades this series, whose topics are continuously evolving, provides a source of state-of-the-art in light and shaped beam interactions with particle and particle systems. The present edition follows the former Optical Particle Sizing (OPS) and Optical Particle Characterization (OPC) conferences held in Rouen 1987; Tempe, AZ, 1990; Yokohama, 1993; Nürnberg, 1995; Minneapolis, MN,1998; Brighton, 2001; Kyoto, 2004; Graz, 2007 as well as the reformulated LIP conference, held in Rouen in 2012; Marseille, 2014; Xi'an 西安市, 2016 and College Station (TX) in 2018. Find detailed information (and papers) on the previous websites of LIP conferences :
LIP2012 LIP2014 LIP2016 LIP2018

Over the years, selected papers from this conference series were published in books and special issues of highly ranked journals (Applied Optics, Particle & Particle Systems Characterization, Journal of Quantitative Spectroscopy & Radiative Transfer), e.g.
OPS1987 OPS1991 OPC1996 LIP2014 LIP2018

Committees, sponsors & partners

  • Scientific Committee
  • Advisory committee
  • Conveners & local committee
  • Partners & Sponsors

Keynote lectures

  • Leonardo Ambrosio
  • Edouard Beccoral
  • David Grier
  • Monika Ritsch-Marte
  • Maciej Wojtkowski
Prof. Leonardo A. Ambrosio
Department of Electrical and Computer Engineering, University of São Paulo, Brazil
“Structured fields constructed from superpositions of nondiffracting beams”
In this talk a new technique for creating linear, superficial or volumetric nondiffracting beams and pulses is presented. Constructed from discrete or continuous superpositions of arbitrary-order Bessel beams, it allows both the theoritician and the experimentalist to conceive, design and produce arbitrary-shaped, diffractionless and even dispersion-free structured light fields along lines, surfaces and volumes, even in lossy and dispersive media. Although of wide range of applicability in telecommunications, remote sensing, optical alignment, atom guiding and so on, here we focus on applications in optical manipulation of micro-sized particles and on examples which can be of great interest in volumetric or holographic displays. A historical perspective on the calculation of the beam shape coeffcients of such beams is presented in terms of the recent challenge of finding reliable descriptions of Bessel beams in the context of the generalized Lorenz-Mie theory and with the aid of localized approximation schemes.
Prof. Edouard Berrocal
Spray-imaging group, Combustion Physics, Lund University, Sweden
“High-contrast imaging through optically dense sprays using Structured Illumination and two-photon excitation Fluorescence imaging”
Imaging and characterizing atomizing sprays is very challenging due to the multiple light scattering generated by the surrounding droplets. This issue has limited the possibility of analyzing liquid breakup phenomena and droplet formation in such scattering media. During the past decade we have been developing, a variety of novel imaging techniques that allows reducing and suppressing image blurs, leading to high contrast visualization of optically dense sprays. These experimental approaches are based on the use of Structured Illumination methods as well as two-photon excitation Fluorescence imaging. Finally, numerical simulations based on GPU accelerated Monte Carlo simulation have also been performed to further understand the effects induced by multiple light scattering and to optimize the proposed optical filtering strategies.
Prof. David G. Grier
Department of Physics and Center for Soft Matter Research, New-York University, USA
“Holographic Particle Characterization: Unveiling the Composition and Dynamics of Colloidal Dispersions with Holographic Video Microscopy”
The in-line hologram of a micrometer-scale colloidal particle encodes extensive information about the particle's three-dimensional position, its size, its shape and its material composition.  One snapshot can localize a colloidal sphere to within one or two nanometers over a range of hundreds of micrometers.  The same analysis yields the sphere's diameter to within a few nanometers and its complex refractive index to within a few parts per thousand.  No other single technique provides such a wealth of particle-resolved information, especially for undiluted and heterogeneous dispersions.  Implementations based on the Lorenz-Mie theory of light scattering can analyze dozens of holograms per second on  standard computer workstations.  This is fast enough to provide feedback for colloidal synthesis reactions and to control industrial processes. Machine-learning implementations are a dozen times faster.  We will demonstrate these capabilities in applications ranging from time-resolved analysis of single-particle transformations to real-world applications in biopharmaceutical manufacturing and semiconductor processing.
Prof. Monika Ritsch-Marte
Biomedical Optics, Medical University of Innsbruck, Austria

“Tailored optical and acoustic traps for organoid research”
Optical imaging of trapped bio-samples poses a serious challenge for large living specimens, such as developing embryos organoids.
A customized combination of optical tweezers and standing ultrasound waves represents a flexible solution to this problem, facilitating 3D-manipulation and volumetric imaging

Prof. Maciej Wojtkowski
Institute of Physical Chemistry, Polish Academy of Sciences,
& Institute of Physics, Nicolaus Copernicus University, Torun, Poland

In vivo imaging by Spatio-Temporal Optical Coherence techniques

The main physical limitation of the in vivo microscopic imaging is associated with light scattering introduced by irregular and often discontinuous distribution of refractive index. Scattering of light limits the number of ballistic photons delivered to and received from the sample. In our work we try to solve these fundamental physical limitations by developing new optical coherence imaging techniques, which utilize spatio-temporally partially coherent light with access to intensity and phase of detected radiation. In our research activity we focus on developing new optical methods that enable to image biological objects in vivo and in minimally invasive way. We went long way covering significant spectrum of various sizes of objects – from organ-size scale up to internal structure of a single cell.


  • Scientific
  • Technical
Not available until April 1st, 2020!
Not available until April 1st, 2020!

Instructions to Authors

  • Presentations
  • Procedure & deadlines
  • Submit an abstract
  • Special issue papers: JQRST
Three formats are scheduled for oral presentations:
  • Keynote lectures (invited talks of 40 minutes plus 5 minutes for questions),
  • Regular presentations (20 minutes of presentation plus 5 minutes for questions)
  • Posters (special session with a best poster award)
For both oral and poster presentations, authors are invited to submit an extended abstract of at least 1000 words and with a maximum of three pages, including supporting figures and references as appropriate. As there is necessarily a limited number of oral presentations, the scientific committee will make the final decision on the presentation format on the basis of two independent reviews plus the authors wish. At least one of the authors is required to register for the conference and the same person may only present a maximum of two oral presentations (no limit on the posters). All selected contributions will be published in the proceedings of the conference (with ISBN and color figures).
It is mandatory to use this MS-Word template (download) to prepare the extended abstract as there will be no real typesetting process. Fill also this MS-Excel sheet (download) to depict the abstract contains, the preferred presentation format and session, the authors affiliations,... All these data will be used for the review process as well to build the conference program and the list of participants. When ready, send these two files by email to the conference secretary:
  • Abstract submission opens .......................November 1st, 2019
  • Abstract submission ends..........................March 1st, 2020
  • Notification of abstract acceptance..........April 1st, 2020
Simply send by email your extended abstract (MS-Word file plus a pdf) and the related  information (Excel file) to the conference secretariat (

Publication: special issue of JQRST (SI:LIP2020)

The SI:LIP2018 is now on-line - The SI:LIP2018 is now on-line - The SI:LIP2018 is now on-line - The SI:LIP2018 is now on-line -
Following the highly successful LIP practice [2012, 2014, 2016, 2018], we will be soliciting papers for the LIP-2020 Topical Issue of the Journal of Quantitative Spectroscopy and Radiative Transfer (JQSRT) and hope that you will want your state-of-the-art research to become part of yet another benchmark collection of papers on light and shaped beam interactions with particles and particle systems. This Topical Issue will consist only of full-size papers documenting research either reported at the conference or pertaining to the main topics of LIP-2020. Extended abstracts of conference presentations will not be considered. Each submission will be thoroughly reviewed by at least two independent referees to ensure that all accepted manuscripts satisfy the highest standards of scientific quality adopted for JQSRT. Again, this will be a topical issue of JQSRT rather than a conference proceedings volume. To expedite the communication of your research results to the scientific community, each paper will be officially published (including year, volume, and page numbers) as soon as it has been accepted, typeset, and proof-read. In other words, the authors of accepted manuscripts will see their papers officially published without having to wait for the rest of the manuscripts to get accepted. This accelerated publication protocol is a recent improvement in the JQSRT production process. The paper submission deadline is expected to be around January 31,  2021.


  • Important dates
  • Registration fees
  • Register

  • Early registration opens............................January 1st, 2020
  • Late registration after...............................May 1st, 2020

There are 3 categories for the registration fees (in Euros, all taxes included) and they depend whether it is an early or /  late registration:
  • Student (Master, Ph.D)(1).....: 400/475
  • Academic & industry(1)........: 500/575
  • Accompanying person(2).....: 120/120
(1) Regular registration fees include: the Conference attendance, book of the conference abstracts, lunches and coffee breaks mentioned on the program, LIP 2020 excursion, welcome reception, guided tour.
(2) Accompanying person fees include: LIP 2020 excursion, welcome reception, guided tour.

Not available until January 1st, 2020!


  • Conference venue
  • Transportation
  • Accommodation
  • About the city and the region

The conference venue is the Institute of Physics, Polish Academy of Sciences. It is located in the south part of Warsaw in Mokotów district, within 15 minutes by car or bus from "Chopin Airport” – the main airport of Warsaw. Institute is also about 20 – 25 min by tram or bus from the city centre and about 15 min walking distance from the metro line 1 providing convenient connection across Warsaw. Within 5 min walk from the Institute there is also a large shopping mall called “Galeria Mokotów” where several restaurants are located. In the nearest area of the Institute a few hotels can be found.
From the International Warsaw Chopin Airport (WAW)
Every 30 min from 6h00 to 23h00 a local train departs to Warsaw central station 'Warszawa Centralna'. It takes about 25 minutes and costs about 1 €. There are also several public buses available. Convenient connection to the city centre (Centrum) is provided by bus no. 175 (departure every 20 min). Single ticket costs about 1 €. At the airport you will also find many taxis and car rental companies to bring you to Warsaw centre.
To reach the Institute of Physics, Polish Academy of Sciences, you can take taxi (cost about 5-7 €) or indirect bus connection (one change needed). For example bus no. 175 with change to the bus no. 317 at the stop “Komitetu Obrony Robotników” or with change to the bus no. 189 at the stop “Sasanki”. The destination bus stop is “Instytut Fizyki”.

Currency (May 2018)
Polish currency is zloty (Polish: złoty).
Currency acronym is PLN.
Average exchange rate: 1 PLN = 0.23 euro // 1 euro = 4.3 PLN

The Organizing Committee will select a variety of accommodation around the Institute of Physics, Polish Academy of Sciences and provide necessary information in the future. We recommend to book hotel in the proximity to the institute (see map). However, number of hotels can be also found in the city centre. Convenient transport to the Institute is provided by tram, buses and metro (line no. 1, station: Wilanowska).
Higher resolution map or Google map (link)
Hotels arround
About the city Warsaw (Polish: Warszawa) is the capital and largest city of Poland with population about 1.77 million residents within a greater metropolitan area of 3.1 million, which makes Warsaw the 8th most-populated capital city in the European Union. Warsaw is an global city, a major international tourist destination, and a significant cultural, political and economic hub. Its historical Old Town was inscribed at the UNESCO World Heritage List.
  • Old Town

  • Presidential Palace
  • Grand Theatre
  • Wilanów Palace
  • Chopin Statue in Łazienki Park
  • Mermaid, Sigismund & Copernicus monuments
  • Świętokrzyski Bridge

Getting around in Warsaw
You can use buses, trams and subway (recommended) from the public transport company called "ZTM". From the company website ( you can download several maps for subway and trams. However, to find connection it is more convenient to use website. Dedicated mobile application (JakDojade) for Android and iOS is also available. Tickets for public transport can be purchased by application or using ticket machines inside all buses. To reach Institute of Physics Polish Academy of Sciences, choose destination stop: "Instytut Fizyki or Galeria Mokotów".


  • Secretariat of the Conference
  • Images & photos credits
  • Last update
Dr Mariusz WOZNIAK
Institute of Physics
Al. Lotnikow 32/46
02-668 Warsaw, Poland
tel.: (+48) 22 116-32-77
mobile: (+48) 693-087-455
  Dr Anastasiya DERKACHOVA
Institute of Physics
Al. Lotnikow 32/46
02-668 Warsaw, Poland
tel.: (+48) 22 116-32-??
mobile: (+48) 693-087-??
Contact email for the conference:
Thanks to Daniel Jakubczyk, Onofrio Maragò, Loïc Méès, Fabrice Lamadie, Fabrice Onofri, Bernard Pouligny, Kuan Fang Ren & Mariusz Wozniak.