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DIATOM MICROSCOPY The main goal of the book is to demonstrate the wide variety of microscopy methods being used to investigate natural and altered diatom structures. This book on Diatom Microscopy gives an introduction to the wide panoply of microscopy methods being used to investigate diatom structure and biology, marking considerable advances in recent technology including optical, fluorescence, confocal and electron microscopy, surface-enhanced Raman spectroscopy (SERS), atomic force microscopy (AFM) and spectroscopy as applied to diatoms. Each chapter includes a tutorial on a microscopy technique and reviews its applications in diatom nanotechnology and diatom research. The number of diatomists, diatom research, and their publications are increasing rapidly. Although many books have dealt with various aspects of diatom biotechnology, nanotechnology, and morphology, to our knowledge, no volume exists that summarizes advanced microscopic approaches to diatoms. Audience The intended audience is academic and industry researchers as well as graduate students working on diatoms and diatom nanotechnology, including biosensors, biomedical engineering, solar panels, batteries, drug delivery, insect control, and biofuels.

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Table of Contents

Cover

Title Page

Copyright

Preface

References

1 Investigation of Diatoms with Optical Microscopy

1.1 Introduction

1.2 Light Microscopy

1.3 Fluorescence Microscopy

1.4 Confocal Laser Scanning Microscopy

1.5 Multiphoton Microscopy

1.6 Super-Resolution Optical Microscopy

1.7 Conclusion

Acknowledgement

References

2 Nanobioscience Studies of Living Diatoms Using Unique Optical Microscopy Systems

Abbreviations

2.1 Trajectory Analysis of Gliding Among Individual Diatom Cells Using Microchamber Systems

2.2 Direct Observation of Floating Phenomena of Individual Diatoms Using a “Tumbled” Microscope System

2.3 Three-Dimensional Physical Imaging of Living Diatom Cells Using a Holographic Microscope System

Acknowledgements

References

3 Recent Insights Into the Ultrastructure of Diatoms Using Scanning and Transmission Electron-Microscopy

3.1 Introduction

3.2 Scanning Electron Microscopy (SEM) of Diatoms

3.3 Transmission Electron Microscopy (TEM) of Diatoms

3.4 Conclusion

References

4 Atomic Force Microscopy Study of Diatoms

4.1 Introduction

4.2 Types of AFM Modes

4.3 Sample Preparation and Methods

4.4 Study of Diatom Ultrastructure Under AFM

4.5 Conclusion

Glossary

Acknowledgement

References

5 Refractive Index Tomography for Diatom Analysis

5.1 Introduction

5.2 Fundamentals of PC-ODT

5.3 Experimental Setup for PC-ODT

5.4 Diatom RI Reconstructions with Bright-Field Illumination

5.5 Illumination Impact on PC-ODT Performance

5.6 Concluding Remarks

Acknowledgement

References

6 Luminescent Diatom Frustules: A Review on the Key Research Applications

6.1 Introduction

6.2 Key Research Applications of Luminescence Properties of Diatom Frustules

6.3 Future Perspectives

6.4 Conclusion

Acknowledgement

References

7 Micro to Nano Ornateness of Diatoms from Geographically Distant Origins of the Globe

7.1 Introduction

7.2 Materials and Methods

7.3 Diatoms from Different Geographical Origins of the World

7.4 Conclusion

7.5 Acknowledgements

References

8 Types of X-Ray Techniques for Diatom Research

8.1 Introduction

8.2 Applications

8.3 Conclusions

Glossary

References

9 Diatom Assisted SERS

9.1 Introduction

9.2 Diatom

9.3 Raman Scattering

9.4 SERS Through Diatom: Fundamentals and Application Overview

9.5 Conclusion and Future Outlook

References

10 Diatoms as Sensors and Their Applications

10.1 Introduction

10.2 Diatoms as Biosensors

10.3 Conclusion

Acknowledgments

References

11 Diatom Frustules: A Transducer Platform for Optical Detection of Molecules

11.1 Introduction

11.2 Optical Properties of Diatom Frustules

11.3 Methods Involved in Thin Film Deposition of Diatom Frustules

11.4 Diatom as an Optical Transducer for Biosensors

11.5 Diatom as an Optical Transducer for Gas/Chemical Sensors

11.6 Conclusion

References

12 Effects of Light on Physico-Chemical Properties of Diatoms

12.1 Introduction

12.2 Effect of Light on Diatom Function and Morphology

12.3 Conclusion

Acknowledgment

References

Index

Also of Interest

End User License Agreement

List of Illustrations

Chapter 1

Figure 1.1 Selected diatoms taxa in the Baryczka stream obtained using phase con...

Figure 1.2 Comparison of diatom defects and man-made photonic crystal fiber. The...

Figure 1.3 Quantitative phase image of diatom cell recorded using 20 x/0.45 micr...

Figure 1.4 QPIs results showing a variety of diatom samples; (a) diatom recorded...

Figure 1.5 Images illustrating the relationship between the bacterium L. monocyt...

Figure 1.6 Dark field micrographs of control cells and cells exposed to Ag NPs. ...

Figure 1.7 (a) Dark field image of single valve of

C. wailesii

diatom and (b) co...

Figure 1.8 Images of new silicon deposits and chlorophyll a (Chl

a)

of coastal a...

Figure 1.9 Hyperspectral analysis of a single valve of

Coscinodiscus centralis

o...

Figure 1.10 Laser confocal microscope images of

H. hauckii-R

. intracellularis sy...

Figure 1.11 Live cells, biosilica and biosilica-associated organic matrix from t...

Figure 1.12 Quantification of carbolines in healthy and oomycete-infected diatom...

Figure 1.13 Evaluation of siRNA uptake and cellular internalization using confoc...

Figure 1.14 Specific particle endocytosis of FITC/PEI/FA-functionalized silica n...

Figure 1.15 Left: Multi-photon image of living centric diatoms Coscinodiscus wai...

Figure 1.16 (a)

Asterionellopsis glacialis

and (b)

Proboscia alata

captured usin...

Figure 1.17 (a) Average fluorescence lifetime images of

T. weissflogii

exposed t...

Figure 1.18 PALM analysis of tpSil3. (a) Comparison of epifluorescence image and...

Chapter 2

Figure 2.1 Diatom studies from the viewpoint of nanobiological physics using opt...

Figure 2.2 Microscopy images of (a) PDMS microchamber, (b) spiral grooves, and (...

Figure 2.3 Trajectories (red lines) of movements of the same diatom cell (a) bef...

Figure 2.4 Overview of a “tumbled” microscope system with a microchamber. A phot...

Figure 2.5 A typical example of snapshots and trajectories of the settlement of ...

Figure 2.6 Typical examples of snapshots and trajectories of floating diatom cel...

Figure 2.7 A DHM image of a living

Cylindrotheca

spp. cell. Ranges of refractive...

Chapter 3

Figure 3.1 SEM images of dehydrated mucilage, (a) 5 μm, (b) 2 μm [3.9]. From Top...

Figure 3.2 (a) Overall view of

Karayevia amoena

, (b) valve without raphe (c) val...

Figure 3.3 (a–c) Scanning electron micrographs of Pd3Co-D(100)-G [3.55], and bef...

Figure 3.4 TEM micrographs of (a–c) Pd3Co-D (100)-G [3.55], (d) T. pseudonana, (...

Figure 3.5 TEM micrographs of

Pseudo-nitzschia

species (a–c)

P. calliantha

, (d—f...

Figure 3.6 CCMP470 structures obtained using (a) bright field LM, (b) phase cont...

Chapter 4

Figure 4.1 Schematic setup of an Atomic Force Microscope. Reproduced with permis...

Figure 4.2 Comparison of the cell jackets fibrillar network obtained with (a) SE...

Figure 4.3 Mesoscale structures of diatomaceous silica studied under AFM, (a) Li...

Figure 4.4 The hypothetical path insertion of TiO

2

in the diatom frustule by a t...

Figure 4.5 Ultrastructure of

Cyclotella cryptica

observed under AFM: (a) Wide an...

Figure 4.6 The centric

Coscinodiscus

sp. diatom frustule with mesh-like porous s...

Figure 4.7 (a, b) showing the effect of stretching of polysaccharide network ove...

Chapter 5

Figure 5.1 (p

x

-p

z

) slices of the normalized OTFs corresponding to a microscope e...

Figure 5.2 Experimental setup for PC-ODT, consisting of a bright-field microscop...

Figure 5.3 (a1–a2) Volumetric representation of the reconstructed 3D RI contrast...

Figure 5.4 Intensity images and the corresponding RI for a

Cocconeis placentula

...

Figure 5.5 Reconstructed RI for (a)

Cymbella subturgidula

and (b) Diploneis elli...

Figure 5.6 Intensity distributions in the condenser plane

(x

c

, y

c

)

along with th...

Figure 5.7 Normalized p

x

-p

z

section of AOTFs for (a) BFI with NA

c

=0.48, (b) BFI ...

Figure 5.8 |POTF| sections calculated for ideal (theoretical) illumination: (a) ...

Figure 5.9 RI contrast slices of a diatom immersed in oil and reconstructed with...

Chapter 6

Figure 6.1 Fluorescence images of the single valve of

C. wailesii

frustule with ...

Figure 6.2 Schematic representation of the steps in the synthesis of the composi...

Figure 6.3 (a) Photoluminescence quenching of diatoms in the presence of several...

Figure 6.4 (a) Photoluminescence spectra of silicon diatoms after each functiona...

Chapter 7

Figure 7.1 (a) Diatoms and Desmids from biofilm at rocks of Rajghat, Sagar, Madh...

Figure 7.2.I (a)

Hyalodiscus sp.;

(b) (Calcareous nannofossil, Chiasmolithus sp....

Figure 7.2.II (a) Unknown

Stephanopyxis;

(b, c)

Distephanosira architecturalis;

...

Figure 7.2.III (a, b)

Hemiaulus polymorphus;

(c) Actinocyclus octonarius var. te...

Figure 7.2.IV (a, b)

Silicoflagellates;

(c)

Corbisema apiculata;

(d)

Corbisema;

...

Figure 7.3 (a, b) Slipway of River Thames, UK; (c) Sieve Trap for diatoms; (d) D...

Figure 7.4.I (a, b)

Calcareous nannofossils;

(c–f)

Cocconeis lineata

.

Figure 7.4.II (a–f) Different ornate architecture of

Cyclostephamos sp

.

Figure 7.4.III (a–f) Different ornate architecture of various centric diatoms.

Figure 7.4.IV Different ornate architecture of (a–c)

Thallassiosira sp.;

(d–f) N...

Figure 7.4.V Different ornate architecture of (a, b)

Stephanodiscus sp.;

(c) Amp...

Figure 7.5 Diatom community composition from the 11 different sites with commonl...

Figure 7.6 (a)

Cyclotella menenghiniana

found at site H18 (Mahendergarh, Haryana...

Figure 7.7.I Site Hot spring bathing place lower Himalayas: (a)

Achnanthes sp.;

...

Figure 7.7.II Site Vyas River lower Himalayas: (a)

Cocconeis sp.;

(b) Diatoma me...

Figure 7.7.III Vyas riverlower northern Himalayas (a)

Achnanthese sp

. (G.V.); (b...

Figure 7.7.IV Site Bishit Kalath lower Northern Himalayas (a)

Gomphonema sp.;

(b...

Figure 7.7.V Tatttapani(Hot spring) (a)

Cyclotella meneghininana;

(b) Encyonema ...

Figure 7.8.I (a, b)

Reimeria;

(c)

Hantzschia amphioxys;

(d) Ctenophora pulchella...

Figure 7.8.II (a)

Asterionella;

(b)

Achnanthes austriaca;

(c) Cymatopleura solea...

Figure 7.8.III (a, b)

Reimeria;

(c)

Hantzschia amphioxys;

(d) Ctenophora pulchel...

Figure 7.8.III (a)

Rhoicosphenia abbreviata

; (b) Unknown.; (c)

Brachysera vitera

...

Figure 7.9.I Nanoarray view of silica architecture at different views and positi...

Figure 7.9.II (a, b)

Petroneis humerosa;

(c) diatoms fragmets of Petroneis humer...

Chapter 8

Figure 8.1 X-ray microscopy of diatoms. (A) X-PEEM images of a diatom frustule d...

Figure 8.2 X-ray spectroscopy of diatoms. (A) Percentage of adsorbed zinc as a f...

Chapter 9

Figure 9.1 Representation of diatoms (adapted from [9.33]).

Figure 9.2 Schematics of SERS (a) normal raman scattering (b) SERS.

Figure 9.3 Schematic illustration of diatom assisted SERS.

Chapter 10

Figure 10.1 SEM images of the diatom valves of

Coscinodiscus wailesii

at differe...

Figure 10.2 SEM images of diatoms fabricated by

in situ

growth and self-assembly...

Figure 10.3 Diatom-based immunoassay sensors made by a covalent bond between the...

Figure 10.4 Schematic representation of the preparation of diatom-based immunose...

Figure 10.5 Schematic representation of SERS-based diatom immunosensor. (a) Modi...

Figure 10.6 Photoluminescence emission from diatom-based optical sensors upon (a...

Figure 10.7 Schematic representation of dissolved ammonia sensing mechanism in b...

Figure 10.8 Schematic representation of ribose-induced conformational change in ...

Chapter 11

Figure 11.1 PL spectra of diatom frustules with multiple emission peaks when exc...

Figure 11.2 Various types of optical properties present in diatom frustules.

Figure 11.3 Methods involved in thin film deposition.

Figure 11.4 Monolayer formation of diatom frustules.

Figure 11.5 Steps involved in the coating antibody over diatom and bonding proce...

Figure 11.6 Schematic representation of functionalization of diatom frustules.

Figure 11.7 (a) Electron micrograph of amine functionalized diatom (AFD) and (b)...

Figure 11.8 Electron micrographs of (a)

Nitzschia sp

. (b) its pore arrangement.

Figure 11.9 Mechanism of Meisenheimer complex formation.

Figure 11.10 Photoluminescent spectra of AFD with different concentration of 4-N...

Chapter 12

Figure 12.1 Eukaryotic phylogenetic tree showing major groups. Diatoms belong to...

Figure 12.2 Single valves of centric diatoms (a)

C. wailessi

(b) Actinoptychus s...

Figure 12.3 Effect of monochromatic LED lights (red, green and blue) on the cell...

Figure 12.4 (a) Effect of monochromatic lights on fatty acid composition in Gole...

Figure 12.5 Growth and photosynthetic ability of

T. pseudonana

and P. tricornutu...

Figure 12.6 (a) The association between growth rates and absorption coefficient ...

Figure 12.7 Light absorption spectra of various characteristic pigments of Nitzs...

Figure 12.8 Depending on the depth, the diatoms are subjected to different wavel...

Figure 12.9 (a) Fucoxanthin content and productivities of

N. laevis

in different...

Figure 12.10 Differences in the photosynthetic apparatus organization, thylakoid...

Figure 12.11 Growth curves of

P. tricornutum

under (a) mFL after high light of 1...

Figure 12.12 Incorporation of molecular antennae, Cy5 antennae dye

in vivo

in T....

List of Tables

Chapter 3

Table 3.1 SEM and TEM analysis of diatoms.

Chapter 4

Table 4.1 Comparison of characteristics of various microscopic techniques [4.45]...

Table 4.2 Difference between pennate and centric diatoms based on AFM studies.

Chapter 5

Table 5.1 Main works which have contribute to PC-ODT development.

Chapter 6

Table 6.1 Some representative examples in which luminescence properties of diato...

Chapter 7

Table 7.1 Twenty one water bodies of Haryana selected for sampling for the year ...

Table 7.2 Diatom Map (D-Map) from different water bodies of Haryana during year ...

Table 7.3 Diatom Map (D-Map) from different water bodies of Haryana during year ...

Chapter 8

Table 8.1 Various X-ray techniques for diatom studies.

Chapter 10

Table 10.1 Various diatoms used in the bio-derived sensors and their application...

Chapter 12

Table 12.1 Role of chlorophylls and carotenoids presents in diatoms.

Table 12.2 Changes in the content of pigments in response to light intensity and...

Guide

Cover

Table of Contents

Title Page

Copyright

Preface

Begin Reading

Index

Also of Interest

End User License Agreement

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Scrivener Publishing100 Cummings Center, Suite 541JBeverly, MA 01915-6106

Diatoms: Biology and Applications

Series Editors: Richard Gordon ([email protected]) and Joseph Seckbach([email protected])

Scope: The diatoms are a single-cell algal group, with each cell surrounded by a silica shell. The shells have beautiful attractive shapes with multiscalar structure at 8 orders of magnitude, and have several uses. 20% of the oxygen we breathe is produced by diatom photosynthesis, and they feed most of the aquatic food chain in freshwaters and the oceans. Diatoms serve as sources of biofuel and electrical solar energy production and are impacting on nanotechnology and photonics. They are important ecological and paleoclimate indicators. Some of them are extremophiles, living at high temperatures or in ice, at extremes of pH, at high or low light levels, and surviving desiccation. There are about 100,000 species and as many papers written about them since their discovery over three hundred years ago. The literature on diatoms is currently doubling every ten years, with 50,000 papers during the last decade (2006-2016). In this context, it is timely to review the progress to date, highlight cutting-edge discoveries, and discuss exciting future perspectives. To fulfill this objective, this new Diatom Series is being launched under the leadership of two experts in diatoms and related disciplines. The aim is to provide a comprehensive and reliable source of information on diatom biology and applications and enhance interdisciplinary collaborations required to advance knowledge and applications of diatoms.

Publishers at Scrivener Martin Scrivener ([email protected]) Phillip Carmical ([email protected])

Diatom Microscopy

Edited by

Nirmal Mazumder

Manipal Academy of Higher Education, Karnataka, India

and

Richard Gordon

Gulf Specimen Marine Laboratory & Aquarium, Panacea, FL., USA and C.S. MottCenter for Human Growth & Development, Department of Obstetrics & Gynecology,Wayne State University, Detroit MI., USA

This edition first published 2022 by John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, USA and Scrivener Publishing LLC, 100 Cummings Center, Suite 541J, Beverly, MA 01915, USA © 2022 Scrivener Publishing LLC For more information about Scrivener publications please visit www.scrivenerpublishing.com.

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10 9 8 7 6 5 4 3 2 1

Preface

Diatoms are photosynthetic, unicellular algae and estimated to have more than 20,000 to 2 million species. They are abundantly found in marine and freshwater ecosystems with their cell walls made of silica. This book on Diatom Microscopy provides an introduction to the wide panoply of microscopy methods being used to investigate diatom structure and biology, marking considerable advances in recent technology including wide-field, fluorescence, confocal, super-resolution optical microscopy, electron microscopy, surface enhanced Raman spectroscopy, atomic force microscopy (AFM) and spectroscopy as applied to diatoms. Each chapter includes a tutorial on a microscopy technique and reviews its applications in diatom research. It will be of great value to both students and researchers working in the field of development of biosensors and biomedical devices using diatoms. The number of diatomists, diatom research and their publications are increasing rapidly. Although a number of books have dealt with various aspects of diatom biotechnology, nanotechnology and morphology, to our knowledge, no volume exists that summarizes advanced microscopic approaches to diatoms.

In Diatom Microscopy, we’ve gathered articles exploring the various exciting aspects of advanced microscopy techniques and their aspects in technology development as well as applications. The first chapter by Khan et al. [1.5], electron microscopic images are observed to study the ornate structures of diatoms from about 65 geographically distant origins of water bodies in India, the river Thames in the United Kingdom, samples from the Natural History Museum Basel, Switzerland and fossilized diatoms from Oamaru. Studying the wide distribution of different site-specific diatom genera from fresh and marine waterbodies contributes to gaining information about biodiversity and its wide application in life and material sciences. In many biological studies, it is highly desirable to visualize and analyze three-dimensional (3D) views of any organism before extending its applications. Since the size of diatoms ranges between 2-500 μm, optical microscopy can be used to visualize them. Shih-Ting Lin et al. [1.6], have given a detailed insight into the importance of optical microscopy in the study of diatoms. Optical imaging provides spatial resolution at the submicrometer scale without harming the specimens. Image post-processing and reconstruction also make it possible to render the structure of samples in 3D via optical sectioning. The authors have explored various types of light microscopy, fluorescence microscopy, confocal laser scanning microscopy, multiphoton microscopy, and super-resolution optical microscopy, within the context of diatom research and the applicability of this work to eco-environmental science and biomedicine. Further, Umemura et al. [1.11], have described the application of a unique optical microscopy system called the ‘tumbled’ microscope to observe cell gliding and floating cells in water and on solid surfaces using a microchamber. In addition, the authors also explained the use of digital holographic microscopy to study the internal structures of diatom cells. Soto et al. [1.8], have explained the use of additional advanced techniques, namely partially coherent optical diffraction tomography (PC-ODT), which allows reconstruction of the three-dimensional distribution of the diatom’s refractive index (RI). The RI image is more consistent than the image intensity of light transmitted through the specimen. These results, obtained from such advanced optical microscopy techniques, will be valuable in diatom nanotechnology, such as the fabrication of optimal diatom biofilms.

Despite the several applications of optical microscopy, a higher spatial resolution is necessary to uncover the deeper structural details of diatoms. Gopal et al. [1.4], have given recent insights into the ultrastructure of diatoms using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The topography of diatom frustules is studied using atomic force microscopy (AFM). Chakraborty et al. [1.2], have explored biomineral formation in diatoms using AFM. In addition, the authors have revealed the applications of AFM in studying the characteristics and function of the mucilage layer, micromechanical properties of the diatom frustule, and taxonomical classification of diatoms. The AFM study of diatoms can inspire designs and manufacturing of nanostructured materials with significant applications. In addition to AFM, X-ray based techniques are also used to analyse the properties of marine frustules, as they provide better results and information on diatom features as well as properties of the diatoms. Sunder et al. [1.9], summarised various X-ray based techniques to assess morphological, chemical, and functional properties of diatoms of various species. However, several factors exist that affect the physicochemical properties of diatoms. Biswas & Biswas [1.1], briefly describe the application of the surface enhanced Raman scattering (SERS) technique for various biophysical, physiological and optoelectronic properties of diatoms. Where diatoms are one of the preferred substrates for accomplishing analysis of common molecular species and the advent of fabrication protocols has enabled comprehensive analysis of diatom assisted SERS. Sen et al. [1.7], have discussed light as an essential factor that alters the properties of diatoms including their morphology, cellular structure, the composition of cell membrane lipids, and metabolism. The detailed characterization of diatoms helps in uncovering their applications in various fields. Tisso et al. [1.10], have discussed the potential application of luminescent diatom frustules in the optoelectronic, sensing, and biomedical fields. De et al. [1.3], have further elaborated on the application of diatoms as bio-derived transducers for label-free sensing, and based on their mechanisms they can be divided into various types such as optical, plasmonic, electrochemical, immunosensors, etc. Diatom-based sensors can be used in agriculture, industry, and medicine especially in the detection of biomarkers and point-of-care biosensing. Diatom frustules are an excellent cost-effective source of bio-silica, which can replace synthetic nanoporous silica materials. Viji S et al. [1.12], have highlighted the various optical properties of diatom frustules, thin film deposition, and eventual implementations in biological and chemical sensors with wide applications including biomedicine, sensing, photonics, energy storage, and conversion techniques. In summary, each chapter in this book gives detailed insight into the microscopic world of diatoms that deals with all aspects, from morphology, topography, ultrastructure, to detailed applications using several advanced microscopic techniques. We hope that researchers who occasionally use diatoms in their work, including archaeologists, forensic scientists, climatologists, etc., will also find the book useful.

We appreciate the authors for their contributions towards our book. We thank the authors for patience and timely submission and responses to the reviewers’ comments. We are grateful to the reviewers who spent their valuable time providing fruitful suggestions/comments for the chapters. We wish to acknowledge all of our colleagues who assisted us with their advice for this volume. Special appreciation to Martin Scrivener and Linda Mohr (Scrivener Publishing) for their cooperation on this book. Most importantly, we would like to thank all the contributors and wish our readers enjoyable and profitable browsing.

References

[1.1] Biswas, R. and Biswas, S. (2022) Chapter 9: Diatom assisted SERS. In: Diatom Microscopy [DIMI, Volume in the series: Diatoms: Biology & Applications, series editors: Richard Gordon & Joseph Seckbach]. N. Mazumder and R. Gordon, (eds.) Wiley-Scrivener, Beverly, MA, USA: 237-250.

[1.2] Chakraborty, I., Chakrabarti, S., Managuli, V. and Mazumder, N. (2022) Chapter 4: Atomic force microscopy study of diatoms. In: Diatom Microscopy [DIMI, Volume in the series: Diatoms: Biology & Applications, series editors: Richard Gordon & Joseph Seckbach]. N. Mazumder and R. Gordon, (eds.) Wiley-Scrivener, Beverly, MA, USA: 81-110.

[1.3] De, P. and Mazumder, N. (2022) Chapter 10: Diatoms as sensors and their applications. In: Diatom Microscopy [DIMI, Volume in the series: Diatoms: Biology & Applications, series editors: Richard Gordon & Joseph Seckbach]. N. Mazumder and R. Gordon, (eds.) Wiley-Scrivener, Beverly, MA, USA: 251-282.

[1.4] Gopal, D., Chakrabarti, S., Venkata, D., Keshav, S., Gordon, R. and Mazumder, N. (2022) Chapter 3: Recent insights into the ultrastructure of diatoms using scanning and transmission electron-microscopy. In: Diatom Microscopy [DIMI, Volume in the series: Diatoms: Biology & Applications, series editors: Richard Gordon & Joseph Seckbach]. N. Mazumder and R. Gordon, (eds.) Wiley-Scrivener, Beverly, MA, USA: 57-80.

[1.5] Khan, M.J., Mathy, D. and Vinayak, V. (2022) Chapter 7: Micro to nano ornateness of diatoms from geographically distant origins of the globe. In: Diatom Microscopy [DIMI, Volume in the series: Diatoms: Biology & Applications, series editors: Richard Gordon & Joseph Seckbach]. N. Mazumder and R. Gordon, (eds.) Wiley-Scrivener, Beverly, MA, USA: 179-220.

[1.6] Lin, S.-T., Lee, M.-X. and Zhuo, G.-Y. (2022) Chapter 1: Investigation of diatoms with optical microscopy. In: Diatom Microscopy [DIMI, Volume in the series: Diatoms: Biology & Applications, series editors: Richard Gordon & Joseph Seckbach]. N. Mazumder and R. Gordon, (eds.) Wiley-Scrivener, Beverly, MA, USA: 1-32.

[1.7] Sen, J., Dhawan, P., De, P. and Mazumder, N. (2022) Chapter 12: Effects of light on physico-chemical properties of diatoms. In: Diatom Microscopy [DIMI, Volume in the series: Diatoms: Biology & Applications, series editors: Richard Gordon & Joseph Seckbach]. N. Mazumder and R. Gordon, (eds.) Wiley-Scrivener, Beverly, MA, USA: 307-334.

[1.8] Soto, J.M., Rodrigo, J.A. and Alieva, T. (2022) Chapter 5: Refractive index tomography for diatom analysis. In: Diatom Microscopy [DIMI, Volume in the series: Diatoms: Biology & Applications, series editors: Richard Gordon & Joseph Seckbach]. N. Mazumder and R. Gordon, (eds.) Wiley-Scrivener, Beverly, MA, USA: 111-138.

[1.9] Sunder, M., Acharya, N., Nayak, S., Gordon, R. and Mazumder, N. (2022) Chapter 8: Types of x-ray techniques for diatom research. In: Diatom Microscopy [DIMI, Volume in the series: Diatoms: Biology & Applications, series editors: Richard Gordon & Joseph Seckbach]. N. Mazumder and R. Gordon, (eds.) Wiley-Scrivener, Beverly, MA, USA: 221-236.

[1.10] Tisso, J., Shetty, S., Mazumder, N., Gogoi, A. and Ahmed, G.A. (2022) Chapter 6: Luminescent diatom frustules: A review on the key research applications. In: Diatom Microscopy [DIMI, Volume in the series: Diatoms: Biology & Applications, series editors: Richard Gordon & Joseph Seckbach]. N. Mazumder and R. Gordon, (eds.) Wiley-Scrivener, Beverly, MA, USA: 139-178.

[1.11] Umemura, K. (2022) Chapter 2: Nanobioscience studies of living diatoms using unique optical microscopy systems. In: Diatom Microscopy [DIMI, Volume in the series: Diatoms: Biology & Applications, series editors: Richard Gordon & Joseph Seckbach]. N. Mazumder and R. Gordon, (eds.) Wiley-Scrivener, Beverly, MA, USA: 33-56.

[1.12] Viji S., Ponpandian N. and Viswanathan C. (2022) Chapter 11: Diatom frustules: A transducer platform for optical detection of molecules. In: Diatom Microscopy [DIMI, Volume in the series: Diatoms: Biology & Applications, series editors: Richard Gordon & Joseph Seckbach]. N. Mazumder and R. Gordon, (eds.) Wiley-Scrivener, Beverly, MA, USA: 283-306.