Exhibit 10.2

THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS.  THIS NOTE MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT AS TO THIS NOTE UNDER SAID ACT AND ANY APPLICABLE STATE SECURITIES LAWS OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO IMPLANT SCIENCES CORPORATION THAT SUCH REGISTRATION IS NOT REQUIRED.

SECURED TERM NOTE

FOR VALUE RECEIVED, IMPLANT SCIENCES CORPORATION, a Massachusetts corporation (the “Company”), promises to pay to LAURUS MASTER FUND, LTD., c/o M&C Corporate Services Limited, P.O. Box 309 GT, Ugland House, South Church Street, George Town, Grand Cayman, Cayman Islands, Fax: 345 ###-###-#### (the “Holder”) or its registered assigns or successors in interest, the sum of Three Million Dollars ($3,000,000), together with any accrued and unpaid interest hereon, on November6, 2005 (the “Maturity Date”) if not sooner paid.

Capitalized terms used herein without definition shall have the meanings ascribed to such terms in that certain Securities Purchase Agreement dated as of the date hereof by and between the Company and the Holder (as amended, modified and/or supplemented from time to time, the “Purchase Agreement”).

The following terms shall apply to this Secured Term Note (this “Note”):

ARTICLE I
CONTRACT RATE AND AMORTIZATION

1.1           Contract Rate.  Subject to Sections 4.2 and 5.10, interest payable on the outstanding principal amount of this Note (the “Principal Amount”) shall accrue at a rate per annum equal to the “prime rate” published in The Wall Street Journal from time to time (the “Prime Rate”), plus one percent (1.0%) (the “Contract Rate”).  The Contract Rate shall be increased or decreased as the case may be for each increase or decrease in the Prime Rate in an amount equal to such increase or decrease in the Prime Rate; each change to be effective as of the day of the change in the Prime Rate.  Interest shall be (i) calculated on the basis of a 360 day year, and (ii) payable monthly in cash, in arrears, commencing on July 1, 2005, on the first business day of each consecutive calendar month thereafter through and including the Maturity Date, and on the Maturity Date, whether by acceleration or otherwise.

1.2           Principal Payments.  All outstanding principal amounts together with any accrued and unpaid interest and any and all other unpaid amounts which are then owing by the Company to the Holder under this Note, the Purchase Agreement and/or any other Related Agreement shall be due and payable on the Maturity Date.

ARTICLE II
NOTE ISSUANCE

2.1           Issuance of New Note.  Upon any loss or destruction of this Note, a new Note containing the same date and provisions of this Note shall, at the request of the Holder, be issued by the Company to the Holder for the principal balance of this Note and interest which shall not have been paid.  The Company shall not pay any costs, fees or any other consideration to the Holder for the production and issuance of a new Note.

ARTICLE III
EVENTS OF DEFAULT

3.1           Events of Default.  The occurrence of any of the following events set forth in this Section 3.1 shall constitute an event of default (“Event of Default”) hereunder:

(a)           Failure to Pay.  The Company fails to pay when due any installment of principal, interest or other fees hereon in accordance herewith, or the Company fails to pay any of the other Obligations (under and as defined in the Master Security Agreement) when due, and, in any such case, such failure shall continue for a period of three (3) days following the date upon which any such payment was due.

(b)           Breach of Covenant.  The Company or any of its Subsidiaries breaches any covenant contained in the Purchase Agreement in any material respect and such breach, if subject to cure, continues for a period of fifteen (15) days after the occurrence thereof.

(c)           Breach of Representations and Warranties.  Any representation, warranty or statement made or furnished by the Company under the Purchase Agreement or any other Related Agreement shall at any time be false or misleading in any material respect on the date as of which made or deemed made.

(d)           Default Under Other Agreements.  The occurrence of any default (or similar term) in the observance or performance of any other agreement or condition relating to any now existing or future indebtedness, preferred equity, or contingent obligation of the Company or any of its Subsidiaries to Holder or otherwise beyond the relevant stated period of grace (if any), the effect of which default is to cause, or permit the holder or holders of such indebtedness or beneficiary or beneficiaries of such contingent obligation to cause, such indebtedness to become due prior to its stated maturity or such contingent obligation to become payable;

(e)           Bankruptcy.  The Company or any of its Subsidiaries shall (i) apply for, consent to or suffer to exist the appointment of, or the taking of possession by, a receiver, custodian, trustee or liquidator of itself or of all or a substantial part of its property, (ii) make a general assignment for the benefit of creditors, (iii) commence a voluntary case under the federal bankruptcy laws (as now or hereafter in effect), (iv) be adjudicated a bankrupt or insolvent, (v) file a petition seeking to take advantage of any other law providing for the relief of debtors, (vi) acquiesce to, without challenge within ten (10) days of the filing thereof, or failure

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to have dismissed, within thirty (30) days, any petition filed against it in any involuntary case under such bankruptcy laws, or (vii) take any action for the purpose of effecting any of the foregoing;

(f)            Judgments.  Attachments or levies in excess of $100,000  in the aggregate are made upon the Company or any of its Subsidiary’s assets or a judgment is rendered against the Company’s property involving a liability of more than $100,000  which shall not have been vacated, discharged, stayed or bonded within thirty (30) days from the entry thereof;

(g)           Insolvency.  The Company or any of its Subsidiaries shall admit in writing its inability, or be generally unable, to pay its debts as they become due or cease operations of its present business;

(h)           Change of Control.  A Change of Control (as defined below) shall occur with respect to the Company, unless Holder shall have expressly consented to such Change of Control in writing.  A “Change of Control” shall mean any event or circumstance as a result of which (i) any “Person” or “group” (as such terms are defined in Sections 13(d) and 14(d) of the Exchange Act, as in effect on the date hereof), other than the Holder, is or becomes the “beneficial owner” (as defined in Rules 13(d)-3 and 13(d)-5 under the Exchange Act), directly or indirectly, of 35% or more on a fully diluted basis of the then outstanding voting equity interest of the Company, or (ii) the Company or any of its Subsidiaries merges or consolidates with, or sells all or substantially all of its assets to, any other person or entity;

(i)            Indictment; Proceedings.  The indictment of the Company or any of its Subsidiaries or any executive officer of the Company or any of its Subsidiaries under any criminal statute, or commencement of criminal or civil proceeding against the Company or any of its Subsidiaries or any executive officer of the Company or any of its Subsidiaries that could reasonably be expected to have a Material Adverse Effect, and pursuant to which statute or proceeding penalties or remedies sought or available include forfeiture of any of the property of the Company or any of its Subsidiaries;

(j)            The Purchase Agreement and Related Agreements.  (i) An Event of Default shall occur under and as defined in the Purchase Agreement or any other Related Agreement, (ii) the Company or any of its Subsidiaries shall breach any term or provision of the Purchase Agreement or any other Related Agreement in any material respect and such breach, if capable of cure, continues unremedied for a period of fifteen (15) days after the occurrence thereof, (iii) the Company or any of its Subsidiaries attempts to terminate, challenges the validity of, or its liability under, the Purchase Agreement or any Related Agreement, (iv) any proceeding shall be brought to challenge the validity, binding effect of the Purchase Agreement or any Related Agreement or (v) the Purchase Agreement or any Related Agreement ceases to be a valid, binding and enforceable obligation of the Company or any of its Subsidiaries (to the extent such persons or entities are a party thereto);

(k)           Stop Trade.  An SEC stop trade order or Principal Market trading suspension of the Common Stock shall be in effect for five (5) consecutive days or five (5) days during a period of ten (10) consecutive days, excluding in all cases a suspension of all trading on a Principal Market, provided that the Company shall not have been able to cure such trading

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suspension within thirty (30) days of the notice thereof or list the Common Stock on another Principal Market within sixty (60) days of such notice; or

(l)            Failure to Deliver Replacement Note.  The Company’s failure to deliver to issue and deliver a replacement Note as required by Section 2.2 hereof to the Holder within seven (7) business days of Holder’s written request therefor.

3.2           Default Interest.  Following the occurrence and during the continuance of an Event of Default, the Company shall pay additional interest on this Note in an amount equal to two percent (2%) per month, and all outstanding obligations under this Note, the Purchase Agreement and each other Related Agreement, including unpaid interest, shall continue to accrue interest at such additional interest rate from the date of such Event of Default until the date such Event of Default is cured or waived.

ARTICLE IV
MISCELLANEOUS

4.1           Cumulative Remedies.  The remedies under this Note shall be cumulative.

4.2           Failure or Indulgence Not Waiver.  No failure or delay on the part of the Holder hereof in the exercise of any power, right or privilege hereunder shall operate as a waiver thereof, nor shall any single or partial exercise of any such power, right or privilege preclude other or further exercise thereof or of any other right, power or privilege.  All rights and remedies existing hereunder are cumulative to, and not exclusive of, any rights or remedies otherwise available.

4.3           Notices.  Any notice herein required or permitted to be given shall be in writing and shall be deemed effectivfely given: (a) upon personal delivery to the party notified, (b) when sent by confirmed telex or facsimile if sent during normal business hours of the recipient, if not, then on the next business day, (c) five days after having been sent by registered or certified mail, return receipt requested, postage prepaid, or (d) one day after deposit with a nationally recognized overnight courier, specifying next day delivery, with written verification of receipt.  All communications shall be sent to the Company at the address provided in the Purchase Agreement executed in connection herewith, and to the Holder at the address provided in the Purchase Agreement for such Holder, with a copy to John E. Tucker, Esq., 825 Third Avfenue, 14^th Floor, New York, New York 10022, facsimile number ###-###-####, or at such other address as the Company or the Holder may designate by ten days advance written notice to the other parties hereto.  A Notice of Conversion shall be deemed given when made to the Company pursuant to the Purchase Agreement.

4.4           Amendment Provision.  The term “Note” and all references thereto, as used throughout this instrument, shall mean this instrument as originally executed, or if later amended or supplemented, then as so amended or supplemented, and any successor instrument as such successor instrument may be amended or supplemented.

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4.5           Assignability.  This Note shall be binding upon the Company and its successors and assigns, and shall inure to the benefit of the Holder and its successors and assigns, and may be assigned by the Holder in accordance with the requirements of the Purchase Agreement.  The Company may not assign any of its obligations under this Note without the prior written consent of the Holder, any such purported assignment without such consent being null and void.

4.6           Cost of Collection.  In case of any Event of Default under this Note, the Company shall pay the Holder reasonable costs of collection, including reasonable attorneys’ fees.

4.7           Governing Law, Jurisdiction and Waiver of Jury Trial.

(a)           THIS NOTE SHALL BE GOVERNED BY AND CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO PRINCIPLES OF CONFLICTS OF LAW.

(b)           THE COMPANY HEREBY CONSENTS AND AGREES THAT THE STATE OR FEDERAL COURTS LOCATED IN THE COUNTY OF NEW YORK, STATE OF NEW YORK SHALL HAVE EXCLUSIVE JURISDICTION TO HEAR AND DETERMINE ANY CLAIMS OR DISPUTES BETWEEN THE COMPANY, ON THE ONE HAND, AND THE HOLDER, ON THE OTHER HAND, PERTAINING TO THIS NOTE OR ANY OF THE OTHER RELATED AGREEMENTS OR TO ANY MATTER ARISING OUT OF OR RELATED TO THIS NOTE OR ANY OF THE RELATED AGREEMENTS; PROVIDED, THAT THE COMPANY ACKNOWLEDGES THAT ANY APPEALS FROM THOSE COURTS MAY HAVE TO BE HEARD BY A COURT LOCATED OUTSIDE OF THE COUNTY OF NEW YORK, STATE OF NEW YORK; AND FURTHER PROVIDED, THAT NOTHING IN THIS NOTE SHALL BE DEEMED OR OPERATE TO PRECLUDE THE HOLDER FROM BRINGING SUIT OR TAKING OTHER LEGAL ACTION IN ANY OTHER JURISDICTION TO COLLECT THE OBLIGATIONS, TO REALIZE ON THE COLLATERAL OR ANY OTHER SECURITY FOR THE OBLIGATIONS, OR TO ENFORCE A JUDGMENT OR OTHER COURT ORDER IN FAVOR OF THE HOLDER.  THE COMPANY EXPRESSLY SUBMITS AND CONSENTS IN ADVANCE TO SUCH JURISDICTION IN ANY ACTION OR SUIT COMMENCED IN ANY SUCH COURT, AND THE COMPANY HEREBY WAIVES ANY OBJECTION WHICH IT MAY HAVE BASED UPON LACK OF PERSONAL JURISDICTION, IMPROPER VENUE OR FORUM NON CONVENIENS.  THE COMPANY HEREBY WAIVES PERSONAL SERVICE OF THE SUMMONS, COMPLAINT AND OTHER PROCESS ISSUED IN ANY SUCH ACTION OR SUIT AND AGREES THAT SERVICE OF SUCH SUMMONS, COMPLAINT AND OTHER PROCESS MAY BE MADE BY REGISTERED OR CERTIFIED MAIL ADDRESSED TO THE COMPANY AT THE ADDRESS SET FORTH IN THE PURCHASE AGREEMENT AND THAT SERVICE SO MADE SHALL BE DEEMED COMPLETED UPON THE EARLIER OF THE COMPANY’S ACTUAL RECEIPT THEREOF OR THREE (3) DAYS AFTER DEPOSIT IN THE U.S. MAILS, PROPER POSTAGE PREPAID.

(c)           THE COMPANY DESIRES THAT ITS DISPUTES BE RESOLVED BY A JUDGE APPLYING SUCH APPLICABLE LAWS.  THEREFORE, TO

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ACHIEVE THE BEST COMBINATION OF THE BENEFITS OF THE JUDICIAL SYSTEM AND OF ARBITRATION, THE COMPANY HERETO WAIVES ALL RIGHTS TO TRIAL BY JURY IN ANY ACTION, SUIT, OR PROCEEDING BROUGHT TO RESOLVE ANY DISPUTE, WHETHER ARISING IN CONTRACT, TORT, OR OTHERWISE BETWEEN THE HOLDER AND THE COMPANY ARISING OUT OF, CONNECTED WITH, RELATED OR INCIDENTAL TO THE RELATIONSHIP ESTABLISHED BETWEEN THEM IN CONNECTION WITH THIS NOTE, ANY OTHER RELATED AGREEMENT OR THE TRANSACTIONS RELATED HERETO OR THERETO.

4.8           Severability.  In the event that any provision of this Note is invalid or unenforceable under any applicable statute or rule of law, then such provision shall be deemed inoperative to the extent that it may conflict therewith and shall be deemed modified to conform with such statute or rule of law.  Any such provision which may prove invalid or unenforceable under any law shall not affect the validity or enforceability of any other provision of this Note.

4.9           Maximum Payments.  Nothing contained herein shall be deemed to establish or require the payment of a rate of interest or other charges in excess of the maximum permitted by applicable law.  In the event that the rate of interest required to be paid or other charges hereunder exceed the maximum rate permitted by such law, any payments in excess of such maximum rate shall be credited against amounts owed by the Company to the Holder and thus refunded to the Company.

4.10         Security Interest.  The Holder has been granted a security interest in certain assets of the Company as more fully described in the Master Security Agreement dated as of the date hereof.  The obligations of the Company under this Note are guaranteed by certain Subsidiaries of the Company pursuant to the Subsidiary Guaranty dated as of the date hereof.

4.11         Construction.  Each party acknowledges that its legal counsel participated in the preparation of this Note and, therefore, stipulates that the rule of construction that ambiguities are to be resolved against the drafting party shall not be applied in the interpretation of this Note to favor any party against the other.

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IN WITNESS WHEREOF, the Company has caused this Secured Convertible Term Note to be signed in its name effective as of this        day of June, 2005.

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