Writing a Scientific Paper

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Peter A. Thrower Editor-in-Chief, CARBON

WRITING A SCIENTIFIC PAPER

The Past Typewriters demanded extreme care. Copy Editors were important. Publications were in other languages. Typesetting was manual. Submission costs! Always saw complete ms. (Title, Abstract, Text)

The Present Computers make correction and revision easy. There are no copy editors - must rely on grammar and spell checkers. These are poor language monitors! English is the language of science - sorry! No typesetting - electronic formatting. Free submissions via website.

The components Title Abstract Introduction Experimental Results & Discussion Conclusions (or Summary) Acknowledgments & References

What do I do first? Certainly NOT write in the order the sections appear. Perhaps as follows. Results & Discussion Conclusions Experimental Introduction Abstract Title Organise References Acknowledgments

Results A paper is centered around the Results

First get them organised. What to include? Any photographs? How will I present them figures and/or tables? Do I need to combine results with discussion? Can some Results be presented as

Results Tables Graphs Exact, Objective Check accuracy Some guesswork?

Photographs Representative? Subjective Supplementary Material

Figures Make sure each one is important. There is no need to have a photograph of a nanotube in every paper dealing with them! Do not duplicate data in both figures and tables. Which shows the data more clearly?

Discussion If possible, separate from the Results BUT Sometimes a result, or set of results, must be discussed in order to logically point to the next stage in the experiment. In this case combine Results

Discussion Keep it logical. Do not ramble. Compare your results with those of others. References are really important here. Be careful to show where your work has advanced the subject. Try to lead naturally to the

Conclusions This is NOT the same as a summary. The Abstract is usually a summary. A reader who has the paper will certainly have the Abstract. Personal preference is to have the Conclusions as a list. If it is a summary -give it that heading and make it more than the Abstract. NEVER make conclusions that cannot be justified or are not mentioned in the main text.

ExperimentalThis section has two purposes: To convince readers that the work has been done systematically and thoroughly using appropriate equipment. To allow readers to repeat the experiments if they wish.

To check (doubtful) results To prepare the same materials, etc.

Experimental Should contain ALL information needed for another person to repeat the experiment. Sample preparation. Times and temperatures. Heating rates. Sources of materials. Purity. Particle size. Synthesis of intermediates Analytical & measurement techniques.

Experimental Are instrument details important? (They should usually be irrelevant.) Does somebody need the same instrument to repeat the research? What is the difference between TEM and HRTEM? When does an instrument become high resolution? Do not sub-divide too much. (Some papers are submitted with

Why together? Because usually a minimum of 30%, and as many as 70+% of all references are cited in the Introduction. Most Introductions are unnecessarily long. A reference is something you may wish to refer to for further information. When did you last consult a reference? If you have done so, it is most unlikely to be one of the first

Introduction and References

What is the purpose of the Introduction? A brief, or complete, history of the subject? What does the reader need to know? What will the reader already know? BUT Some reviewers are upset if their papers are not

Citation IndexShould be based on papers referenced other than in the Introduction! References cited in the Discussion are certainly more important to the papers content. This paper citations

[1] S. Iijima, Helical microtubules of graphitic carbon. Nature 1991;354 (6348):5658.

has nearly 10,000 but most are in

Titles Be straightforward and precise: Improved mechanical properties Which ones? Strength? Stiffness? For what applications? Better for one application may be the opposite for another.

Activated carbons produced at low temperature CNT solution in organic acids All? Which did you investigate? and acetic. 80 K is low! 500C is not.

Fumic

Never use a colon (or hyphen) unless the paper is part of a multi-part series.

Titles

Chemistry and kinetics of chemical vapor deposition of pyrocarbon: I. Carbon deposition from methane . Chemistry and kinetics of chemical vapor deposition of pyrocarbon: II. Carbon deposition from propylene The structure of CVD carbon: the effect of deposition temperature should be: The effect of deposition temperature on

AbstractIn this paper we report new results on the successful preparation of

We know it is not a different paper, but this one. We know it is you. We know the results are new - we would not publish if they were old. We assume the experiment was

AbstractSimply tell the reader two things:

Do not:

What was done. Important results obtained. Provide history or narrative. Speculate - possible uses, etc. Include data that is not in

A recent example.

Submitted AbstractThis paper presents the development of activated carbons (ACs) for a 4.5 K sorption cooler for ESAs Darwin mission. A sorption cooler has two parts: (i) cold stage; (ii) sorption compressor. ACs are very interesting candidates for sorption compressors because large amounts of gas can be adsorbed reversibly. In the present paper, ACs with different surface area, micropore size distribution and packing density were prepared from an anthracite and bituminous coals. The development of porosity was carried out by different activation methods using KOH, NaOH and CO2 as activating agents. Some ACs were agglomerated using different binders to prepare activated carbon monoliths (ACMs). In order to predict the performance of these materials in Helium sorption compressors, Helium adsorption isotherms were measured up to 35 bar in a cryogenic volumetric characterization set-up, at different temperatures (from 20 K up to 150 K). Moreover, other measurements were carried out, including packing density, mechanical properties (compression strength, vibration tests), thermal expansion and also pressure-drop measurements. From the results obtained in this study, an ACM with a high helium adsorption/desorption capacity, high density, low pressure drop, low thermal expansion and good mechanical properties was prepared and applied successfully in a 4.5 K sorption cooler. (195 words)

Edited AbstractFor use in a 4.5 K sorption cooler, activated carbons (ACs) with different surface areas, micropore size distributions and packing densities were prepared from anthracite and bituminous coals. The development of porosity was carried out using KOH, NaOH and CO2 as activating agents. Some ACs were combined with different binders to prepare activated carbon monoliths. In order to predict the performance of thesematerials in helium sorption compressors, helium adsorption isotherms were measured up to 35 bar in a cryogenic volumetric characterization apparatus, at different temperatures (20 to 150 K). Packing density, mechanical properties (compression strength, vibration tests), thermal expansion and pressure-drop measurements were also investigated. From the results, a monolith with a high helium adsorption/desorption capacity, high density, low pressure drop, low thermal expansion and good mechanical properties was prepared and used successfully.(134 words, >30% less)What were the binders? What was the successful monolith? Were commercial materials compared?

Correct this Abstract! In this study, entangled and bundled MWNTs produced in different temperature and catalysis by CVD techniques were adopted to fabricate MWNTs/PA6 composites. The results demonstrated the better mechanical properties were achieved for bundled MWNTs than entangled MWNTs. With addition of only 1.0wt% MWNTs into PA6 matrix, the tensile strength and modulus were increased up to 15.6% and 16.5% respectively. The storage modules of the two kinds of MWNTs/PA6 composites at 40C increased about 30%, and the Tg increase to 61.3 and 63.3C respectively from 57.7C of neat PA6.

Better? Entangled and bundled MWCNTs produced by CVD at different temperatures and using different catalysts were used to fabricate MWCNT/PA6 composites. Better mechanical properties were achieved for bundled MWCNTs than for entangled MWCNTs. With the addition of only 1.0wt% MWCNTs to the PA6 matrix, the tensile strength and modulus were increased by 15.6% and 16.5% respectively. The storage moduli of the two MWCNT/PA6 composites at 40C increased about 30%, and the Tg increased from 57.7C for neat PA6 to 61.3 and 63.3C for the bundled and entangled MWCNTs, respectively.

The Submission Process Read the Guide for Authors. PLEASE!

You MUST submit using the website. Make sure you include suggestions for international

Section headings. Reference format. Length restrictions for Letters.

If the Editor-in-Chief has told you to resubmit - true for most papers from China.

Submission

Make sure you do as requested and carefully follow each point in the Resubmit letter. If you do not agree with some of my suggestions, please include a cover letter to explain why this is so. Be sensible! If I correct something in the Abstract, ask

Abbreviations To define an abbreviation, first write the term in full followed by the abbreviation in parentheses. X-ray diffraction (XRD) examination showed that the samples were not crystalline .. Do not do the reverse. Never define an abbreviation in the manuscript title. Never use abbreviations in the Abstract without defining them, and only define them if they are used later in the Abstract. Define an abbreviation the first time it is used in the text, even though it may also have been defined in the Abstract. Only define an abbreviation if you are going to use it later.

Some English problems We do not usually use plural nouns as adjectives - carbon fiber composites not carbon fibers composites. Do not use hyphens unless necessary to clarify meaning. Chinese food seller!

Chinese-food seller - a person who sells Chinese food Chinese food-seller - a Chinese person who sells food

of is usually preceded and followed by the

Some English problems - articles the dimensions of the sample were measured the speed of the car BUT .the speed of light

Some nationalities tend to use the where not necessary and omit a where it is necessary FTIR is a typical method used to characterise chemically...

The FTIR is one of the typical methods used to characterise the chemically modified nanotubes. We obtained black solid after the reduction of the.

We obtained a black solid after reduction of the.

Some English problems Literal translation is often wrong! This is the reason why some samples gave different results. is correct. NOT It is the reason why

Respectively In order to make sure of the necessity of the hydrogen involvement, experiments were carried out in helium and hydrogen atmospheres respectively. WRONG. In order to make sure of the necessity of the hydrogen involvement, experiments were carried out in helium and hydrogen atmospheres at 230C and

RespectivelyThe word is used to link items in two or more lists in the order in which they appear in those lists. To say that samples were heat treated at 450C and 700C respectively is incorrect unless there is a list of two

Latin phrases In situ - means in the place. All things happen in a place! Use it ONLY to indicate that something is taking place where it will later be used. Via - by is usually enough & simpler e.g. (for example) and i.e. (that is, or that is to say)

Nano Nano - one billionth Nano has become shorthand for nanometer or nanometer sized Nanotechnology - the art of manipulating materials on a very small scale in order to build microscopic machinery (Encarta) Nanobot - a robot of microscopic proportions built using nanotechnology (Encarta) Hence nanosecond, nanometer, nanogram

Misuse - loose use A recent review of Liszt piano concertos criticised the pianist for entering a nanosecond late at one point! The reviewer had superhuman ears. She meant slightly late probably a tenth of a second

Nanocrystalline - perhaps Nanobuckling Nanostress - can you measure? Nanothermodynamics Nanocomposites Nanosheets - ambiguous? Nanolayers - ambiguous? Nanostructured - perhaps - composedsize particles

Misuse - bad constructions

of nm

Nanoropes - Nanotube ropes

Nanocomposites composites, in which the constituents are mixed on a nanometer-length scale. (Cornell Univ.) Surely it should be nanometer-size constituents are mixed... Nanotubes are not of nanometer- length. You would never believe a need for shorthand terminology if you could see the unnecessary length of most submissions!

Misuse - overuse (ms titles) Fabrication of carbon nanotube and nanorod arrays using nanoporous templates Novel nanocomposite of carbon nanotubenanoclay by direct growth of nanotubes on nanoclay surface Micromorphology, macroporosity, and micro/mesoporosity of resorcinolformaldehyde carbon cryogel microhoneycombs Synthesis of nano-glassy carbon by laser ablation

What does this title mean to you? Synthesis of carbon/silica nanocomposite films by an electrochemical method

Misuse can lead to ambiguity

I thought the paper was about a CNT/silica composite (CNTs embedded in silica), BUT it concerned nanometer particles of silica in amorphous carbon

Nano in the wrong place? Nanomechanics of carbon tubes Should it not be Mechanics of carbon nanotubes? Why not millimechanics and kilomechanics?

Does Peer Review Work? Mostly yes - but not perfect The photograph shows a copy of the paper model of C60 'Buckminsterfullere ne' made by R.W.Henson at AERE Harwell,UK in 1970 Peer opinion nonsense "In Science the credit goes to the man who convinces the world, not to the man to whom the idea first occurs." (Sir Francis Darwin)

How to make large quantities of fullerene?

Be Honest -

Conclusions Read the Guide for Authors. Take time! Organize. Be honest. Remember to make Title, Abstract & Paper independently understandable. Pay careful attention to the comments of the Editor and the Reviewers. Do not waste their time!

Thank you for your attention.