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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 60 9945 8995 566 508 180 9509

John P. Hart publications per year

The chart shows the history of publications by John P. Hart between 1979 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. John P. Hart published across 47 years, from 1979 to 2025, averaging 4 papers a year. Output peaked at 12 publications in 2007. 2 of the 188 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1979 to 2025. Vertical axis: number of publications, 0 to 12. Peak 12 publications in 2007. 1979: 1 publication 1980: 2 publications 1981: 2 publications 1982: 1 publication 1983: 0 publications 1984: 2 publications 1985: 1 publication 1986: 1 publication 1987: 0 publications 1988: 2 publications 1989: 4 publications 1990: 3 publications 1991: 6 publications 1992: 7 publications 1993: 0 publications 1994: 8 publications 1995: 7 publications 1996: 4 publications 1997: 6 publications 1998: 2 publications 1999: 4 publications 2000: 5 publications 2001: 10 publications 2002: 8 publications 2003: 4 publications 2004: 6 publications 2005: 9 publications 2006: 5 publications 2007: 12 publications 2008: 9 publications 2009: 9 publications 2010: 7 publications 2011: 6 publications 2012: 5 publications 2013: 4 publications 2014: 3 publications 2015: 2 publications 2016: 7 publications 2017: 2 publications 2018: 4 publications 2019: 1 publication 2020: 4 publications 2021: 0 publications 2022: 0 publications 2023: 1 publication 2024: 1 publication 2025: 1 publication
1979 2025

188 publications in total across all disciplines

View publications per year as a table
John P. Hart: publications per year, 1979 to 2025
Year Publications
1979 1
1980 2
1981 2
1982 1
1983 0
1984 2
1985 1
1986 1
1987 0
1988 2
1989 4
1990 3
1991 6
1992 7
1993 0
1994 8
1995 7
1996 4
1997 6
1998 2
1999 4
2000 5
2001 10
2002 8
2003 4
2004 6
2005 9
2006 5
2007 12
2008 9
2009 9
2010 7
2011 6
2012 5
2013 4
2014 3
2015 2
2016 7
2017 2
2018 4
2019 1
2020 4
2021 0
2022 0
2023 1
2024 1
2025 1
Total 188
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John P. Hart publications per year - data summary

  • John P. Hart, a Chemistry scholar from University of the West of England, has 188 publications recorded across 47 years, from 1979 to 2025.
  • The oldest publication on record dates to 1979 and the most recent to 2025.
  • The most productive year is 2007, with 12 publications.
  • The least productive years with any output are 1979, 1982, 1985, 1986 and others, with 1 publication each.
  • 5 of the 47 years in the span carry no publications at all (1983, 1987, 1993, 2021 and others).
  • The rate of publication averages 4.0 papers per year over the whole span, or 4.5 per year counting only the 42 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 3 publications, 2% of the career total.
  • Split into equal eras - 1979-1994: 40 publications (2.5 per year); 1995-2010: 107 publications (6.7 per year); 2011-2025: 41 publications (2.7 per year).
  • Comparing the opening and closing eras, the overall trend of publication is broadly steady.

John P. Hart publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where John P. Hart sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 161–180 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 180 publications — 25th percentile

25% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350 180
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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John P. Hart publication distribution in Chemistry in 2026 - data summary

  • The chart plots the publication count of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 63 ranges running from 61–80 to 1,295+ publications.
  • John P. Hart, a Chemistry scholar from University of the West of England, records 180 publications - the 25th percentile of the discipline.
  • 25% of ranked Chemistry scientists score the same or lower than John P. Hart, and about 75% score higher.
  • The median of the discipline falls in the 241–260 publications range, and John P. Hart ranks below the median.
  • The most crowded range is 161–180 publications, holding 1,350 scientists (8% of the field).
  • 77% of the field sits in the lowest quarter of the value range (up to 361–380 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 1,295 publications or more, 100 scientists in all (<1% of the field).

John P. Hart D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where John P. Hart sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 60–61 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 60 D-Index — 47th percentile

47% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882 60
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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John P. Hart D-index placement in Chemistry in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 61 ranges running from 40–41 to 159+ D-Index.
  • John P. Hart, a Chemistry scholar from University of the West of England, records 60 D-Index - the 47th percentile of the discipline.
  • 47% of ranked Chemistry scientists score the same or lower than John P. Hart, and about 53% score higher.
  • The median of the discipline falls in the 62–63 D-Index range, and John P. Hart ranks below the median.
  • The most crowded range is 56–57 D-Index, holding 1,051 scientists (6% of the field).
  • 70% of the field sits in the lowest quarter of the value range (up to 70–71 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 159 D-Index or more, 98 scientists in all (<1% of the field).

Overview

John P. Hart is affiliated with the University of the West of England in the United Kingdom. Their research primarily focuses on engineering disciplines, especially in chemical engineering, with a specific emphasis on areas such as electrical and electronic engineering, biomedical engineering, and bioengineering. They have also worked within molecular biology and spectroscopy subfields.

The main themes of their work center around electrochemical sensors and biosensors, analytical chemistry and sensors, and advanced chemical sensor technologies. Additional topics include biosensors and analytical detection, advanced biosensing and bioanalysis techniques, as well as analytical chemistry and chromatography.

John P. Hart has contributed to multiple scientific publications spanning these specialized topics. Some of their recent research papers include:

  • Screen-printed carbon based biosensors and their applications in agri-food safety, 2020, TrAC Trends in Analytical Chemistry
  • Studies Towards the Development of a Novel, Screen-Printed Carbon-Based, Biosensor for the Measurement of Polyunsaturated Fatty Acids, 2020, Applied Sciences
  • Development of a Disposable, Amperometric Glycerol Biosensor Based on a Screen-Printed Carbon Electrode, Modified with the Electrocatalyst Meldolas Blue, Coated with Glycerol Dehydrogenase and NAD+: Application to the Analysis of Wine Quality, 2024, Applied Sciences
  • Development of a novel dual-enzyme screen-printed amperometric biosensor for the analysis of esterified fatty acids, 2023, Journal of Food Composition and Analysis

Their publications have appeared frequently in the journals Applied Sciences, TrAC Trends in Analytical Chemistry, and the Journal of Food Composition and Analysis.

John P. Hart has collaborated extensively with several coauthors throughout their career. Frequent collaborators include Adrian Crew, Olena Doran, Amy Smart, R. M. Pemberton, and G. Hughes.

Best Publications

  • Comparative study of three types of microbial fuel cell

    Ioannis A. Ieropoulos;John Greenman;Chris Melhuish;John Hart

  • Chemically modified, carbon-based electrodes and their application as electrochemical sensors for the analysis of biologically important compounds. A review

    Stephen A. Wring;John P. Hart

  • Recent developments in the design and application of screen-printed electrochemical sensors for biomedical, environmental and industrial analyses

    John P. Hart;Stephen A. Wring

  • Screen-printed electrochemical sensors for monitoring metal pollutants

    Kevin C. Honeychurch;John P. Hart

  • Some Recent Designs and Developments of Screen‐Printed Carbon Electrochemical Sensors/Biosensors for Biomedical, Environmental, and Industrial Analyses

    John P. Hart;Adrian Crew;Eric Crouch;Kevin C. Honeychurch

  • Sensing with chemically and biologically modified carbon electrodes. A review

    Markas A. T. Gilmartin;John P. Hart

  • Voltammetric and amperometric studies of thiocholine at a screen-printed carbon electrode chemically modified with cobalt phthalocyanine: studies towards a pesticide sensor

    John P. Hart;Ian C. Hartley

  • Screen‐printed voltammetric and amperometric electrochemical sensors for decentralized testing

    John P. Hart;Stephen A. Wring

  • Development of a disposable ethanol biosensor based on a chemically modified screen-printed electrode coated with alcohol oxidase for the analysis of beer

    Mohammed Boujtita;John P. Hart;Robin Pittson

  • Voltammetric behaviour of ascorbic acid at a graphite-epoxy composite electrode chemically modified with cobalt phthalocyanine and its amperometric determination in multivitamin preparations

    Stephen A. Wring;John P. Hart;Brian J. Birch

  • Chemically modified, screen-printed carbon electrodes

    Stephen A. Wring;John P. Hart

  • An electrochemical immunosensor for milk progesterone using a continuous flow system

    R.M Pemberton;J.P Hart;T.T Mottram

  • A screen-printed, amperometric biosensor array incorporated into a novel automated system for the simultaneous determination of organophosphate pesticides

    A. P. Crew;D. Lonsdale;N. Byrd;R. Pittson

  • Evaluation of a new disposable screen‐printed sensor strip for the measurement of NADH and its modification to produce a lactate biosensor employing microliter volumes

    Steven D. Sprules;John P. Hart;Robin Pittson;Stephen A. Wring

  • A novel, disposable, screen-printed amperometric biosensor for glucose in serum fabricated using a water-based carbon ink.

    Eric Crouch;David C. Cowell;Stephen Hoskins;Robin W. Pittson

  • A comparison of 1-naphthyl phosphate and 4 aminophenyl phosphate as enzyme substrates for use with a screen-printed amperometric immunosensor for progesterone in cows' milk.

    R.M Pemberton;J.P Hart;P Stoddard;J.A Foulkes

  • Electroanalysis of biologically important compounds

    John P. Hart;Malcolm R. Smyth

  • Energy accumulation and improved performance in microbial fuel cells

    Ioannis Ieropoulos;John Greenman;Chris Melhuish;John Hart

  • Novel, reagentless, amperometric biosensor for uric acid based on a chemically modified screen-printed carbon electrode coated with cellulose acetate and uricase

    Markas A. T. Gilmartin;John P. Hart

  • Development of an improved carbon electrode chemically modified with cobalt phthalocyanine as a re-usable sensor for glutathione

    Stephen A. Wring;John P. Hart;Brian J. Birch

  • Fundamentals of electrochemical analysis: Zbigniew Galus, Ellis Horwood, New York (ISBN 0-13-345281-6), and Polish Scientific Publishers PWN, Warsaw, 1994 (ISBN 83-01-11255-7). xiii + 606 pp. Price $118.50

    John P. Hart

Frequent Co-Authors

John Greenman
John Greenman University of the West of England
Damien W. M. Arrigan
Damien W. M. Arrigan Curtin University
Ioannis Ieropoulos
Ioannis Ieropoulos University of Southampton
Chris Melhuish
Chris Melhuish University of the West of England
David V. McCalley
David V. McCalley University of the West of England
Malcolm R. Smyth
Malcolm R. Smyth Dublin City University
Michael J. Whitcombe
Michael J. Whitcombe University of Leicester
Michael Thompson
Michael Thompson National Center for Atmospheric Research
Bernard L. Schneider
Bernard L. Schneider École Polytechnique Fédérale de Lausanne
Arben Merkoçi
Arben Merkoçi Catalan Institution for Research and Advanced Studies

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